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Purpose of this post
This post is directed towards community members who wish to rapidly access information on current developments surrounding the Dash cryptocurrency. Lately we've noticed how the pace of events picked up significantly within the Dash project due to many years of hard work coming together and pieces falling into place ("Evolution" is finally here. It's called Dash Platform). For the purpose of keeping these many pieces of information together, however, singular Reddit submissions are insufficient. Thus we decided to maintain a pinned thread collecting blog posts, interviews, articles, podcasts, videos & announcements. Check back regularly, as this thread will always feature the latest news around Dash, while also serving as a mid-term archive for important announcements and developments. Journalists looking for news and contact opportunities wrt Dash, please bookmark:
Bitcoin (BTC) is a peer-to-peer cryptocurrency that aims to function as a means of exchange that is independent of any central authority. BTC can be transferred electronically in a secure, verifiable, and immutable way.
Launched in 2009, BTC is the first virtual currency to solve the double-spending issue by timestamping transactions before broadcasting them to all of the nodes in the Bitcoin network. The Bitcoin Protocol offered a solution to the Byzantine Generals’ Problem with ablockchainnetwork structure, a notion first created byStuart Haber and W. Scott Stornetta in 1991.
Bitcoin’s whitepaper was published pseudonymously in 2008 by an individual, or a group, with the pseudonym “Satoshi Nakamoto”, whose underlying identity has still not been verified.
The Bitcoin protocol uses an SHA-256d-based Proof-of-Work (PoW) algorithm to reach network consensus. Its network has a target block time of 10 minutes and a maximum supply of 21 million tokens, with a decaying token emission rate. To prevent fluctuation of the block time, the network’s block difficulty is re-adjusted through an algorithm based on the past 2016 block times.
With a block size limit capped at 1 megabyte, the Bitcoin Protocol has supported both the Lightning Network, a second-layer infrastructure for payment channels, and Segregated Witness, a soft-fork to increase the number of transactions on a block, as solutions to network scalability.
Bitcoin is a peer-to-peer cryptocurrency that aims to function as a means of exchange and is independent of any central authority. Bitcoins are transferred electronically in a secure, verifiable, and immutable way.
Network validators, whom are often referred to as miners, participate in the SHA-256d-based Proof-of-Work consensus mechanism to determine the next global state of the blockchain.
The Bitcoin protocol has a target block time of 10 minutes, and a maximum supply of 21 million tokens. The only way new bitcoins can be produced is when a block producer generates a new valid block.
The protocol has a token emission rate that halves every 210,000 blocks, or approximately every 4 years.
Unlike public blockchain infrastructures supporting the development of decentralized applications (Ethereum), the Bitcoin protocol is primarily used only for payments, and has only very limited support for smart contract-like functionalities (Bitcoin “Script” is mostly used to create certain conditions before bitcoins are used to be spent).
In the Bitcoin network, anyone can join the network and become a bookkeeping service provider i.e., a validator. All validators are allowed in the race to become the block producer for the next block, yet only the first to complete a computationally heavy task will win. This feature is called Proof of Work (PoW). The probability of any single validator to finish the task first is equal to the percentage of the total network computation power, or hash power, the validator has. For instance, a validator with 5% of the total network computation power will have a 5% chance of completing the task first, and therefore becoming the next block producer. Since anyone can join the race, competition is prone to increase. In the early days, Bitcoin mining was mostly done by personal computer CPUs. As of today, Bitcoin validators, or miners, have opted for dedicated and more powerful devices such as machines based on Application-Specific Integrated Circuit (“ASIC”). Proof of Work secures the network as block producers must have spent resources external to the network (i.e., money to pay electricity), and can provide proof to other participants that they did so. With various miners competing for block rewards, it becomes difficult for one single malicious party to gain network majority (defined as more than 51% of the network’s hash power in the Nakamoto consensus mechanism). The ability to rearrange transactions via 51% attacks indicates another feature of the Nakamoto consensus: the finality of transactions is only probabilistic. Once a block is produced, it is then propagated by the block producer to all other validators to check on the validity of all transactions in that block. The block producer will receive rewards in the network’s native currency (i.e., bitcoin) as all validators approve the block and update their ledgers.
The Bitcoin protocol utilizes the Merkle tree data structure in order to organize hashes of numerous individual transactions into each block. This concept is named after Ralph Merkle, who patented it in 1979. With the use of a Merkle tree, though each block might contain thousands of transactions, it will have the ability to combine all of their hashes and condense them into one, allowing efficient and secure verification of this group of transactions. This single hash called is a Merkle root, which is stored in the Block Header of a block. The Block Header also stores other meta information of a block, such as a hash of the previous Block Header, which enables blocks to be associated in a chain-like structure (hence the name “blockchain”). An illustration of block production in the Bitcoin Protocol is demonstrated below. https://preview.redd.it/m6texxicf3151.png?width=1591&format=png&auto=webp&s=f4253304912ed8370948b9c524e08fef28f1c78d
Block time and mining difficulty
Block time is the period required to create the next block in a network. As mentioned above, the node who solves the computationally intensive task will be allowed to produce the next block. Therefore, block time is directly correlated to the amount of time it takes for a node to find a solution to the task. The Bitcoin protocol sets a target block time of 10 minutes, and attempts to achieve this by introducing a variable named mining difficulty. Mining difficulty refers to how difficult it is for the node to solve the computationally intensive task. If the network sets a high difficulty for the task, while miners have low computational power, which is often referred to as “hashrate”, it would statistically take longer for the nodes to get an answer for the task. If the difficulty is low, but miners have rather strong computational power, statistically, some nodes will be able to solve the task quickly. Therefore, the 10 minute target block time is achieved by constantly and automatically adjusting the mining difficulty according to how much computational power there is amongst the nodes. The average block time of the network is evaluated after a certain number of blocks, and if it is greater than the expected block time, the difficulty level will decrease; if it is less than the expected block time, the difficulty level will increase.
What are orphan blocks?
In a PoW blockchain network, if the block time is too low, it would increase the likelihood of nodes producingorphan blocks, for which they would receive no reward. Orphan blocks are produced by nodes who solved the task but did not broadcast their results to the whole network the quickest due to network latency. It takes time for a message to travel through a network, and it is entirely possible for 2 nodes to complete the task and start to broadcast their results to the network at roughly the same time, while one’s messages are received by all other nodes earlier as the node has low latency. Imagine there is a network latency of 1 minute and a target block time of 2 minutes. A node could solve the task in around 1 minute but his message would take 1 minute to reach the rest of the nodes that are still working on the solution. While his message travels through the network, all the work done by all other nodes during that 1 minute, even if these nodes also complete the task, would go to waste. In this case, 50% of the computational power contributed to the network is wasted. The percentage of wasted computational power would proportionally decrease if the mining difficulty were higher, as it would statistically take longer for miners to complete the task. In other words, if the mining difficulty, and therefore targeted block time is low, miners with powerful and often centralized mining facilities would get a higher chance of becoming the block producer, while the participation of weaker miners would become in vain. This introduces possible centralization and weakens the overall security of the network. However, given a limited amount of transactions that can be stored in a block, making the block time too longwould decrease the number of transactions the network can process per second, negatively affecting network scalability.
3. Bitcoin’s additional features
Segregated Witness (SegWit)
Segregated Witness, often abbreviated as SegWit, is a protocol upgrade proposal that went live in August 2017. SegWit separates witness signatures from transaction-related data. Witness signatures in legacy Bitcoin blocks often take more than 50% of the block size. By removing witness signatures from the transaction block, this protocol upgrade effectively increases the number of transactions that can be stored in a single block, enabling the network to handle more transactions per second. As a result, SegWit increases the scalability of Nakamoto consensus-based blockchain networks like Bitcoin and Litecoin. SegWit also makes transactions cheaper. Since transaction fees are derived from how much data is being processed by the block producer, the more transactions that can be stored in a 1MB block, the cheaper individual transactions become. https://preview.redd.it/depya70mf3151.png?width=1601&format=png&auto=webp&s=a6499aa2131fbf347f8ffd812930b2f7d66be48e The legacy Bitcoin block has a block size limit of 1 megabyte, and any change on the block size would require a network hard-fork. On August 1st 2017, the first hard-fork occurred, leading to the creation of Bitcoin Cash (“BCH”), which introduced an 8 megabyte block size limit. Conversely, Segregated Witness was a soft-fork: it never changed the transaction block size limit of the network. Instead, it added an extended block with an upper limit of 3 megabytes, which contains solely witness signatures, to the 1 megabyte block that contains only transaction data. This new block type can be processed even by nodes that have not completed the SegWit protocol upgrade. Furthermore, the separation of witness signatures from transaction data solves the malleability issue with the original Bitcoin protocol. Without Segregated Witness, these signatures could be altered before the block is validated by miners. Indeed, alterations can be done in such a way that if the system does a mathematical check, the signature would still be valid. However, since the values in the signature are changed, the two signatures would create vastly different hash values. For instance, if a witness signature states “6,” it has a mathematical value of 6, and would create a hash value of 12345. However, if the witness signature were changed to “06”, it would maintain a mathematical value of 6 while creating a (faulty) hash value of 67890. Since the mathematical values are the same, the altered signature remains a valid signature. This would create a bookkeeping issue, as transactions in Nakamoto consensus-based blockchain networks are documented with these hash values, or transaction IDs. Effectively, one can alter a transaction ID to a new one, and the new ID can still be valid. This can create many issues, as illustrated in the below example:
Alice sends Bob 1 BTC, and Bob sends Merchant Carol this 1 BTC for some goods.
Bob sends Carols this 1 BTC, while the transaction from Alice to Bob is not yet validated. Carol sees this incoming transaction of 1 BTC to him, and immediately ships goods to B.
At the moment, the transaction from Alice to Bob is still not confirmed by the network, and Bob can change the witness signature, therefore changing this transaction ID from 12345 to 67890.
Now Carol will not receive his 1 BTC, as the network looks for transaction 12345 to ensure that Bob’s wallet balance is valid.
As this particular transaction ID changed from 12345 to 67890, the transaction from Bob to Carol will fail, and Bob will get his goods while still holding his BTC.
With the Segregated Witness upgrade, such instances can not happen again. This is because the witness signatures are moved outside of the transaction block into an extended block, and altering the witness signature won’t affect the transaction ID. Since the transaction malleability issue is fixed, Segregated Witness also enables the proper functioning of second-layer scalability solutions on the Bitcoin protocol, such as the Lightning Network.
Lightning Network is a second-layer micropayment solution for scalability. Specifically, Lightning Network aims to enable near-instant and low-cost payments between merchants and customers that wish to use bitcoins. Lightning Network was conceptualized in a whitepaper by Joseph Poon and Thaddeus Dryja in 2015. Since then, it has been implemented by multiple companies. The most prominent of them include Blockstream, Lightning Labs, and ACINQ. A list of curated resources relevant to Lightning Network can be found here. In the Lightning Network, if a customer wishes to transact with a merchant, both of them need to open a payment channel, which operates off the Bitcoin blockchain (i.e., off-chain vs. on-chain). None of the transaction details from this payment channel are recorded on the blockchain, and only when the channel is closed will the end result of both party’s wallet balances be updated to the blockchain. The blockchain only serves as a settlement layer for Lightning transactions. Since all transactions done via the payment channel are conducted independently of the Nakamoto consensus, both parties involved in transactions do not need to wait for network confirmation on transactions. Instead, transacting parties would pay transaction fees to Bitcoin miners only when they decide to close the channel. https://preview.redd.it/cy56icarf3151.png?width=1601&format=png&auto=webp&s=b239a63c6a87ec6cc1b18ce2cbd0355f8831c3a8 One limitation to the Lightning Network is that it requires a person to be online to receive transactions attributing towards him. Another limitation in user experience could be that one needs to lock up some funds every time he wishes to open a payment channel, and is only able to use that fund within the channel. However, this does not mean he needs to create new channels every time he wishes to transact with a different person on the Lightning Network. If Alice wants to send money to Carol, but they do not have a payment channel open, they can ask Bob, who has payment channels open to both Alice and Carol, to help make that transaction. Alice will be able to send funds to Bob, and Bob to Carol. Hence, the number of “payment hubs” (i.e., Bob in the previous example) correlates with both the convenience and the usability of the Lightning Network for real-world applications.
Schnorr Signature upgrade proposal
Elliptic Curve Digital Signature Algorithm (“ECDSA”) signatures are used to sign transactions on the Bitcoin blockchain. https://preview.redd.it/hjeqe4l7g3151.png?width=1601&format=png&auto=webp&s=8014fb08fe62ac4d91645499bc0c7e1c04c5d7c4 However, many developers now advocate for replacing ECDSA with Schnorr Signature. Once Schnorr Signatures are implemented, multiple parties can collaborate in producing a signature that is valid for the sum of their public keys. This would primarily be beneficial for network scalability. When multiple addresses were to conduct transactions to a single address, each transaction would require their own signature. With Schnorr Signature, all these signatures would be combined into one. As a result, the network would be able to store more transactions in a single block. https://preview.redd.it/axg3wayag3151.png?width=1601&format=png&auto=webp&s=93d958fa6b0e623caa82ca71fe457b4daa88c71e The reduced size in signatures implies a reduced cost on transaction fees. The group of senders can split the transaction fees for that one group signature, instead of paying for one personal signature individually. Schnorr Signature also improves network privacy and token fungibility. A third-party observer will not be able to detect if a user is sending a multi-signature transaction, since the signature will be in the same format as a single-signature transaction.
4. Economics and supply distribution
The Bitcoin protocol utilizes the Nakamoto consensus, and nodes validate blocks via Proof-of-Work mining. The bitcoin token was not pre-mined, and has a maximum supply of 21 million. The initial reward for a block was 50 BTC per block. Block mining rewards halve every 210,000 blocks. Since the average time for block production on the blockchain is 10 minutes, it implies that the block reward halving events will approximately take place every 4 years. As of May 12th 2020, the block mining rewards are 6.25 BTC per block. Transaction fees also represent a minor revenue stream for miners.
Nano vs. Dogecoin - a tale of two cryptocurrency for microtransactions (& more)
So, I wanted to write here, because I think Nano community is open-minded, and can think it through - I really like it, and tho I don't have it (only tested it a few times from faucets). As I see both of those CCs are focusing mainly on low-cost payments and microtransaction/micropayments, and "fun to use". Even tho Dogecoin can be though as "meme" and "silly", it's actually used and adopted in many places - far more then Nano (ofc, it's also older and have easier codebase to implement - sharing it with bitcoin), but as I will outline, I think that there are a few things that Nano/Nano community can learn from them. Dogecoin:
no leader - it's the main thing that makes cryptocurrencies decentralized. There is no leader only participants that are driving the development and services
easy to implement codebase - Nano should think, about having some function (like JSON-RPC) similar to Bitcoin's - this way more services could implement it - maybe it is now, but it wasn't
more liquidity - a real winner in cryptocurrencies we can only see, by their behaviour in bear market - Doge is always around 25-35 position on cmc or coinpaprika, because it's really liquid - around 10-11M USD (or equivalent) is sitting in the order books of exchanges around the world (at the bottom I have added a comment, where I have compared it on actual data)
consistent output of 30-40K transactions per day - this is ofc related to better adoption (there is 0 stress tests on Doge)
almost 0 fees - these Nano have better, but Doge is also good in it - although there is a "default" fee of 1 Doge in standard client - you can set in reality as low as 1 sat/byte, so it's usually around 250-500 "dogetoshi" - neglible at best (6e-9 USD)
inflation - to be used as "money" it must be dispersed and spended, and to be spended - it must have a little inflation to encourage spending instead of hoarding. Currently Nano have quite stiff supply, which can hinder it's later growth, and will encourage mainly speculation (fixed supply assets always have rampant speculation and often end in pump and dumps, if they aren't needed or used for anything in real world)
decentralized nodes - 1K+ nodes
it has 0 fees - that's a huge plus for micropayments in any kind (although Natrium hinders it a little, giving only 6 decimals to use - it should be at least 8, like with other bitcoin-based currencies - fortunately other wallets seems to handle 8 decimals on Nano)
instant txs - also a huge plus
decentralized nodes (although Doge also has it - even more because it has about 1K+ nodes)
quite vibrant community
slowly being adopted in a few services - which is a plus
Liquidity comparison: Nano: https://coinpaprika.com/coin/nano-nano/#!liquidity Doge: https://coinpaprika.com/coin/doge-dogecoin/#!liquidity The trend is evident, if you switch to 1y or max on market depth history - Dogecoin have almost +100% growth in this period (from June 2019) and Nano 50% decline. Looking at the data from vcdepth it's even more apparent: https://vcdepth.io/coins/doge-doge https://vcdepth.io/coins/nano-nano As I say, I think Nano can learn from Doge's some, especially regarding exchange's liquidity - that's preventing a lot from happening right now. Binance is the only source, and market maker for Nano, but there should be more - through the ecosystem. What Nano team should do in my opinion is: take part of their funds from dev premine, and use it for liquidity purposes. Cryptocurrencies can't be "run" like startups, and Nano holding shouldn't be treated as equity or cash equivalent, dumping it straight on the books. Binance is making a lot to provide all of their coins with liquid markets (their MMs are one of the best on the market), but I think team can increase liquidity easily by a factor of 2-3x, just by hiring specialistic company, that will manage it. I know coins, that have done it - and it's the main thing that helped them stay relevant. Developing protocol is important, but without liquid market - it doesn't achieve anything (because it won't be used by more people). Especially I would try to improve USDT markets - they are basically USD pairs. PS. I'm not a developer, but I research CCs on daily basis, because it's actually my work. I think my comparison is right, because Doge have achieve much more then being only "meme" currency, and Banano did not (it's only meme currency without liquidity, acceptance, or being really used anywhere).
Technical: A Brief History of Payment Channels: from Satoshi to Lightning Network
Who cares about political tweets from some random country's president when payment channels are a much more interesting and are actually capable of carrying value? So let's have a short history of various payment channel techs!
Generation 0: Satoshi's Broken nSequence Channels
Because Satoshi's Vision included payment channels, except his implementation sucked so hard we had to go fix it and added RBF as a by-product. Originally, the plan for nSequence was that mempools would replace any transaction spending certain inputs with another transaction spending the same inputs, but only if the nSequence field of the replacement was larger. Since 0xFFFFFFFF was the highest value that nSequence could get, this would mark a transaction as "final" and not replaceable on the mempool anymore. In fact, this "nSequence channel" I will describe is the reason why we have this weird rule about nLockTime and nSequence. nLockTime actually only works if nSequence is not 0xFFFFFFFF i.e. final. If nSequence is 0xFFFFFFFF then nLockTime is ignored, because this if the "final" version of the transaction. So what you'd do would be something like this:
You go to a bar and promise the bartender to pay by the time the bar closes. Because this is the Bitcoin universe, time is measured in blockheight, so the closing time of the bar is indicated as some future blockheight.
For your first drink, you'd make a transaction paying to the bartender for that drink, paying from some coins you have. The transaction has an nLockTime equal to the closing time of the bar, and a starting nSequence of 0. You hand over the transaction and the bartender hands you your drink.
For your succeeding drink, you'd remake the same transaction, adding the payment for that drink to the transaction output that goes to the bartender (so that output keeps getting larger, by the amount of payment), and having an nSequence that is one higher than the previous one.
Eventually you have to stop drinking. It comes down to one of two possibilities:
You drink until the bar closes. Since it is now the nLockTime indicated in the transaction, the bartender is able to broadcast the latest transaction and tells the bouncers to kick you out of the bar.
You wisely consider the state of your liver. So you re-sign the last transaction with a "final" nSequence of 0xFFFFFFFF i.e. the maximum possible value it can have. This allows the bartender to get his or her funds immediately (nLockTime is ignored if nSequence is 0xFFFFFFFF), so he or she tells the bouncers to let you out of the bar.
Now that of course is a payment channel. Individual payments (purchases of alcohol, so I guess buying coffee is not in scope for payment channels). Closing is done by creating a "final" transaction that is the sum of the individual payments. Sure there's no routing and channels are unidirectional and channels have a maximum lifetime but give Satoshi a break, he was also busy inventing Bitcoin at the time. Now if you noticed I called this kind of payment channel "broken". This is because the mempool rules are not consensus rules, and cannot be validated (nothing about the mempool can be validated onchain: I sigh every time somebody proposes "let's make block size dependent on mempool size", mempool state cannot be validated by onchain data). Fullnodes can't see all of the transactions you signed, and then validate that the final one with the maximum nSequence is the one that actually is used onchain. So you can do the below:
Become friends with Jihan Wu, because he owns >51% of the mining hashrate (he totally reorged Bitcoin to reverse the Binance hack right?).
Slip Jihan Wu some of the more interesting drinks you're ordering as an incentive to cooperate with you. So say you end up ordering 100 drinks, you split it with Jihan Wu and give him 50 of the drinks.
When the bar closes, Jihan Wu quickly calls his mining rig and tells them to mine the version of your transaction with nSequence 0. You know, that first one where you pay for only one drink.
Because fullnodes cannot validate nSequence, they'll accept even the nSequence=0 version and confirm it, immutably adding you paying for a single alcoholic drink to the blockchain.
The bartender, pissed at being cheated, takes out a shotgun from under the bar and shoots at you and Jihan Wu.
Jihan Wu uses his mystical chi powers (actually the combined exhaust from all of his mining rigs) to slow down the shotgun pellets, making them hit you as softly as petals drifting in the wind.
The bartender mutters some words, clothes ripping apart as he or she (hard to believe it could be a she but hey) turns into a bear, ready to maul you for cheating him or her of the payment for all the 100 drinks you ordered from him or her.
Steely-eyed, you stand in front of the bartender-turned-bear, daring him to touch you. You've watched Revenant, you know Leonardo di Caprio could survive a bear mauling, and if some posh actor can survive that, you know you can too. You make a pose. "Drunken troll logic attack!"
I think I got sidetracked here.
Bears are bad news.
You can't reasonably invoke "Satoshi's Vision" and simultaneously reject the Lightning Network because it's not onchain. Satoshi's Vision included a half-assed implementation of payment channels with nSequence, where the onchain transaction represented multiple logical payments, exactly what modern offchain techniques do (except modern offchain techniques actually work). nSequence (the field, but not its modern meaning) has been in Bitcoin since BitCoin For Windows Alpha 0.1.0. And its original intent was payment channels. You can't get nearer to Satoshi's Vision than being a field that Satoshi personally added to transactions on the very first public release of the BitCoin software, like srsly.
Miners can totally bypass mempool rules. In fact, the reason why nSequence has been repurposed to indicate "optional" replace-by-fee is because miners are already incentivized by the nSequence system to always follow replace-by-fee anyway. I mean, what do you think those drinks you passed to Jihan Wu are, other than the fee you pay him to mine a specific version of your transaction?
Satoshi made mistakes. The original design for nSequence is one of them. Today, we no longer use nSequence in this way. So diverging from Satoshi's original design is part and parcel of Bitcoin development, because over time, we learn new lessons that Satoshi never knew about. Satoshi was an important landmark in this technology. He will not be the last, or most important, that we will remember in the future: he will only be the first.
Incentive-compatible time-limited unidirectional channel; or, Satoshi's Vision, Fixed (if transaction malleability hadn't been a problem, that is). Now, we know the bartender will turn into a bear and maul you if you try to cheat the payment channel, and now that we've revealed you're good friends with Jihan Wu, the bartender will no longer accept a payment channel scheme that lets one you cooperate with a miner to cheat the bartender. Fortunately, Jeremy Spilman proposed a better way that would not let you cheat the bartender. First, you and the bartender perform this ritual:
You get some funds and create a transaction that pays to a 2-of-2 multisig between you and the bartender. You don't broadcast this yet: you just sign it and get its txid.
You create another transaction that spends the above transaction. This transaction (the "backoff") has an nLockTime equal to the closing time of the bar, plus one block. You sign it and give this backoff transaction (but not the above transaction) to the bartender.
The bartender signs the backoff and gives it back to you. It is now valid since it's spending a 2-of-2 of you and the bartender, and both of you have signed the backoff transaction.
Now you broadcast the first transaction onchain. You and the bartender wait for it to be deeply confirmed, then you can start ordering.
The above is probably vaguely familiar to LN users. It's the funding process of payment channels! The first transaction, the one that pays to a 2-of-2 multisig, is the funding transaction that backs the payment channel funds. So now you start ordering in this way:
For your first drink, you create a transaction spending the funding transaction output and sending the price of the drink to the bartender, with the rest returning to you.
You sign the transaction and pass it to the bartender, who serves your first drink.
For your succeeding drinks, you recreate the same transaction, adding the price of the new drink to the sum that goes to the bartender and reducing the money returned to you. You sign the transaction and give it to the bartender, who serves you your next drink.
At the end:
If the bar closing time is reached, the bartender signs the latest transaction, completing the needed 2-of-2 signatures and broadcasting this to the Bitcoin network. Since the backoff transaction is the closing time + 1, it can't get used at closing time.
If you decide you want to leave early because your liver is crying, you just tell the bartender to go ahead and close the channel (which the bartender can do at any time by just signing and broadcasting the latest transaction: the bartender won't do that because he or she is hoping you'll stay and drink more).
If you ended up just hanging around the bar and never ordering, then at closing time + 1 you broadcast the backoff transaction and get your funds back in full.
Now, even if you pass 50 drinks to Jihan Wu, you can't give him the first transaction (the one which pays for only one drink) and ask him to mine it: it's spending a 2-of-2 and the copy you have only contains your own signature. You need the bartender's signature to make it valid, but he or she sure as hell isn't going to cooperate in something that would lose him or her money, so a signature from the bartender validating old state where he or she gets paid less isn't going to happen. So, problem solved, right? Right? Okay, let's try it. So you get your funds, put them in a funding tx, get the backoff tx, confirm the funding tx... Once the funding transaction confirms deeply, the bartender laughs uproariously. He or she summons the bouncers, who surround you menacingly. "I'm refusing service to you," the bartender says. "Fine," you say. "I was leaving anyway;" You smirk. "I'll get back my money with the backoff transaction, and posting about your poor service on reddit so you get negative karma, so there!" "Not so fast," the bartender says. His or her voice chills your bones. It looks like your exploitation of the Satoshi nSequence payment channel is still fresh in his or her mind. "Look at the txid of the funding transaction that got confirmed." "What about it?" you ask nonchalantly, as you flip open your desktop computer and open a reputable blockchain explorer. What you see shocks you. "What the --- the txid is different! You--- you changed my signature?? But how? I put the only copy of my private key in a sealed envelope in a cast-iron box inside a safe buried in the Gobi desert protected by a clan of nomads who have dedicated their lives and their childrens' lives to keeping my private key safe in perpetuity!" "Didn't you know?" the bartender asks. "The components of the signature are just very large numbers. The sign of one of the signature components can be changed, from positive to negative, or negative to positive, and the signature will remain valid. Anyone can do that, even if they don't know the private key. But because Bitcoin includes the signatures in the transaction when it's generating the txid, this little change also changes the txid." He or she chuckles. "They say they'll fix it by separating the signatures from the transaction body. They're saying that these kinds of signature malleability won't affect transaction ids anymore after they do this, but I bet I can get my good friend Jihan Wu to delay this 'SepSig' plan for a good while yet. Friendly guy, this Jihan Wu, it turns out all I had to do was slip him 51 drinks and he was willing to mine a tx with the signature signs flipped." His or her grin widens. "I'm afraid your backoff transaction won't work anymore, since it spends a txid that is not existent and will never be confirmed. So here's the deal. You pay me 99% of the funds in the funding transaction, in exchange for me signing the transaction that spends with the txid that you see onchain. Refuse, and you lose 100% of the funds and every other HODLer, including me, benefits from the reduction in coin supply. Accept, and you get to keep 1%. I lose nothing if you refuse, so I won't care if you do, but consider the difference of getting zilch vs. getting 1% of your funds." His or her eyes glow. "GENUFLECT RIGHT NOW." Lesson learned?
Payback's a bitch.
Transaction malleability is a bitchier bitch. It's why we needed to fix the bug in SegWit. Sure, MtGox claimed they were attacked this way because someone kept messing with their transaction signatures and thus they lost track of where their funds went, but really, the bigger impetus for fixing transaction malleability was to support payment channels.
Yes, including the signatures in the hash that ultimately defines the txid was a mistake. Satoshi made a lot of those. So we're just reiterating the lesson "Satoshi was not an infinite being of infinite wisdom" here. Satoshi just gets a pass because of how awesome Bitcoin is.
CLTV-protected Spilman Channels
Using CLTV for the backoff branch. This variation is simply Spilman channels, but with the backoff transaction replaced with a backoff branch in the SCRIPT you pay to. It only became possible after OP_CHECKLOCKTIMEVERIFY (CLTV) was enabled in 2015. Now as we saw in the Spilman Channels discussion, transaction malleability means that any pre-signed offchain transaction can easily be invalidated by flipping the sign of the signature of the funding transaction while the funding transaction is not yet confirmed. This can be avoided by simply putting any special requirements into an explicit branch of the Bitcoin SCRIPT. Now, the backoff branch is supposed to create a maximum lifetime for the payment channel, and prior to the introduction of OP_CHECKLOCKTIMEVERIFY this could only be done by having a pre-signed nLockTime transaction. With CLTV, however, we can now make the branches explicit in the SCRIPT that the funding transaction pays to. Instead of paying to a 2-of-2 in order to set up the funding transaction, you pay to a SCRIPT which is basically "2-of-2, OR this singlesig after a specified lock time". With this, there is no backoff transaction that is pre-signed and which refers to a specific txid. Instead, you can create the backoff transaction later, using whatever txid the funding transaction ends up being confirmed under. Since the funding transaction is immutable once confirmed, it is no longer possible to change the txid afterwards.
Todd Micropayment Networks
The old hub-spoke model (that isn't how LN today actually works). One of the more direct predecessors of the Lightning Network was the hub-spoke model discussed by Peter Todd. In this model, instead of payers directly having channels to payees, payers and payees connect to a central hub server. This allows any payer to pay any payee, using the same channel for every payee on the hub. Similarly, this allows any payee to receive from any payer, using the same channel. Remember from the above Spilman example? When you open a channel to the bartender, you have to wait around for the funding tx to confirm. This will take an hour at best. Now consider that you have to make channels for everyone you want to pay to. That's not very scalable. So the Todd hub-spoke model has a central "clearing house" that transport money from payers to payees. The "Moonbeam" project takes this model. Of course, this reveals to the hub who the payer and payee are, and thus the hub can potentially censor transactions. Generally, though, it was considered that a hub would more efficiently censor by just not maintaining a channel with the payer or payee that it wants to censor (since the money it owned in the channel would just be locked uselessly if the hub won't process payments to/from the censored user). In any case, the ability of the central hub to monitor payments means that it can surveill the payer and payee, and then sell this private transactional data to third parties. This loss of privacy would be intolerable today. Peter Todd also proposed that there might be multiple hubs that could transport funds to each other on behalf of their users, providing somewhat better privacy. Another point of note is that at the time such networks were proposed, only unidirectional (Spilman) channels were available. Thus, while one could be a payer, or payee, you would have to use separate channels for your income versus for your spending. Worse, if you wanted to transfer money from your income channel to your spending channel, you had to close both and reshuffle the money between them, both onchain activities.
Poon-Dryja Lightning Network
Bidirectional two-participant channels. The Poon-Dryja channel mechanism has two important properties:
No time limit.
Both the original Satoshi and the two Spilman variants are unidirectional: there is a payer and a payee, and if the payee wants to do a refund, or wants to pay for a different service or product the payer is providing, then they can't use the same unidirectional channel. The Poon-Dryjam mechanism allows channels, however, to be bidirectional instead: you are not a payer or a payee on the channel, you can receive or send at any time as long as both you and the channel counterparty are online. Further, unlike either of the Spilman variants, there is no time limit for the lifetime of a channel. Instead, you can keep the channel open for as long as you want. Both properties, together, form a very powerful scaling property that I believe most people have not appreciated. With unidirectional channels, as mentioned before, if you both earn and spend over the same network of payment channels, you would have separate channels for earning and spending. You would then need to perform onchain operations to "reverse" the directions of your channels periodically. Secondly, since Spilman channels have a fixed lifetime, even if you never used either channel, you would have to periodically "refresh" it by closing it and reopening. With bidirectional, indefinite-lifetime channels, you may instead open some channels when you first begin managing your own money, then close them only after your lawyers have executed your last will and testament on how the money in your channels get divided up to your heirs: that's just two onchain transactions in your entire lifetime. That is the potentially very powerful scaling property that bidirectional, indefinite-lifetime channels allow. I won't discuss the transaction structure needed for Poon-Dryja bidirectional channels --- it's complicated and you can easily get explanations with cute graphics elsewhere. There is a weakness of Poon-Dryja that people tend to gloss over (because it was fixed very well by RustyReddit):
You have to store all the revocation keys of a channel. This implies you are storing 1 revocation key for every channel update, so if you perform millions of updates over your entire lifetime, you'd be storing several megabytes of keys, for only a single channel. RustyReddit fixed this by requiring that the revocation keys be generated from a "Seed" revocation key, and every key is just the application of SHA256 on that key, repeatedly. For example, suppose I tell you that my first revocation key is SHA256(SHA256(seed)). You can store that in O(1) space. Then for the next revocation, I tell you SHA256(seed). From SHA256(key), you yourself can compute SHA256(SHA256(seed)) (i.e. the previous revocation key). So you can remember just the most recent revocation key, and from there you'd be able to compute every previous revocation key. When you start a channel, you perform SHA256 on your seed for several million times, then use the result as the first revocation key, removing one layer of SHA256 for every revocation key you need to generate. RustyReddit not only came up with this, but also suggested an efficient O(log n) storage structure, the shachain, so that you can quickly look up any revocation key in the past in case of a breach. People no longer really talk about this O(n) revocation storage problem anymore because it was solved very very well by this mechanism.
Another thing I want to emphasize is that while the Lightning Network paper and many of the earlier presentations developed from the old Peter Todd hub-and-spoke model, the modern Lightning Network takes the logical conclusion of removing a strict separation between "hubs" and "spokes". Any node on the Lightning Network can very well work as a hub for any other node. Thus, while you might operate as "mostly a payer", "mostly a forwarding node", "mostly a payee", you still end up being at least partially a forwarding node ("hub") on the network, at least part of the time. This greatly reduces the problems of privacy inherent in having only a few hub nodes: forwarding nodes cannot get significantly useful data from the payments passing through them, because the distance between the payer and the payee can be so large that it would be likely that the ultimate payer and the ultimate payee could be anyone on the Lightning Network. Lessons learned?
We can decentralize if we try hard enough!
"Hubs bad" can be made "hubs good" if everybody is a hub.
Smart people can solve problems. It's kinda why they're smart.
After LN, there's also the Decker-Wattenhofer Duplex Micropayment Channels (DMC). This post is long enough as-is, LOL. But for now, it uses a novel "decrementing nSequence channel", using the new relative-timelock semantics of nSequence (not the broken one originally by Satoshi). It actually uses multiple such "decrementing nSequence" constructs, terminating in a pair of Spilman channels, one in both directions (thus "duplex"). Maybe I'll discuss it some other time. The realization that channel constructions could actually hold more channel constructions inside them (the way the Decker-Wattenhofer puts a pair of Spilman channels inside a series of "decrementing nSequence channels") lead to the further thought behind Burchert-Decker-Wattenhofer channel factories. Basically, you could host multiple two-participant channel constructs inside a larger multiparticipant "channel" construct (i.e. host multiple channels inside a factory). Further, we have the Decker-Russell-Osuntokun or "eltoo" construction. I'd argue that this is "nSequence done right". I'll write more about this later, because this post is long enough. Lessons learned?
Bitcoin offchain scaling is more powerful than you ever thought.
Hi Bitcoiners! I’m back with the 28th monthly Bitcoin news recap. For those unfamiliar, each day I pick out the most popularelevant/interesting stories in Bitcoin and save them. At the end of the month I release them in one batch, to give you a quick (but not necessarily the best) overview of what happened in bitcoin over the past month. You can see recaps of the previous months on Bitcoinsnippets.com A recap of Bitcoin in April 2019 Adoption
Just a quick guide to Raiden for newcomers. I'm not an expert so please feel free to jump in with any information I've missed or anything that isn’t correct. Cheers. What is Raiden? "The Raiden Network is an off-chain scaling solution for performing ERC20-compliant token transfers on the Ethereum blockchain. It is Ethereum’s version of Bitcoin’s Lightning Network, enabling near instant, low-fee, scalable, and privacy-preserving payments."1 In plain English, Raiden lets you transfer ETH or any ERC20 token-much faster and cheaper than is currently possible. (See 'further reading' for details on what ERC20 tokens are). So, it makes crypto transfers faster and cheaper. Is that necessary? Yes. Currently, the Ethereum blockchain is capable of processing around 15 transactions per second. You may see this referred to as Tx/sec. By comparison. Visa has stated that they can operate at 56,000 transactions per second. 2 During busy periods the system can become clogged and transactions can take hours. Think back to the spat of ICOs in summer 2017, or the more recent CryptoKitties craze, for examples. Vitalik Buterin, the co-founder of Ethereum, acknowledged as much in a recent blogpost: "With the Ethereum blockchain teaching millions of transactions per day, and both Ethereum and other blockchain projects frequently reaching their full transaction capacity, the need for scaling progress is becoming more and more clear and urgent."3 If crypto is going to contend for mainstream adoption, it needs to speed up big time. This is where Raiden comes in. You don't need to wait for any blocks to be mined. Its transfers are instant. And cheaper? Transfers made on the Ethereum blockchain are calculated based on the computational resource needed to make it. Whether your transfer is big or small, the fee will not be massively different as they all go through a similar process. With Raiden, the fees are proportionate. This means everyday transactions like buying a cup of coffee will carry a much smaller fee. Even making thousands of tiny payments of just a few pennies/cents will not add up to a large fee, as it would do in the current system. How does Raiden work? The Raiden network operates on top of the Ethereum blockchain, but a lot of the heavy lifting takes place off-chain. Transactions take place between two parties using something called balance proofs. Near-limitless transactions can take place simultaneously, off-chain, with two exceptions; a one-off on-chain transaction at the beginning, and another at the end. You can read all about the specifics here. A very simplified way to think about it is to imagine a train with 100 passengers all waiting to board in one queue. At the train door the conductor takes payment, gives out change, ensures everything is in order and lets customers on one at a time. This would take a very long time. Now imagine there are 100 machines to the side that dispense tickets. Everybody goes to get a ticket instantly, then returns to the conductor. There is still only one conductor, but he can now quickly get the passengers on the train without wasting time. In this analogy, Ethereum is the conductor and Raiden is the ticket machines. The passengers buy their tickets (make transactions) to the side (off-chain). There is still only one conductor (Ethereum blockchain). But instead of queuing up for ages and clogging up the system, the process is sped up by performing most of the work to the side (off-chain) and everybody gets on the train (makes a transaction) much faster. The destination is the same, but the journey is quicker. Apologies for the very unscientific analogy :) How long until Raiden is ready to go? Raiden was initially scheduled for launch in March 2017 but was pushed back. Currently Raiden is still in the development phase but a limited release is coming soon. This will give Dapp developers a taste of Raiden ahead of its full release. They'll also be able to build prototypes that can interact with the Raiden Ropsten-based test network. What is µRaiden? µRaiden is similar to Raiden in that it allows for off-chain transactions. The micropayments that happen off-chain are free, and µRaiden is already live. However, one major difference between this and Raiden is the linear transactions. It cannot be established for many-to-many payments like Raiden can. And what is Raidos? Raidos, or Raiden 2.0, is still in its early stages. Instead of only dealing in ERC20 tokens, it will look to cover all types of smart contract. So Raiden, µRaiden and Raidos are all from one company? Yes. If you invest in Raiden tokens, you're effectively investing in all three at once. What is the point of Raiden tokens (RDN)? For people who want to use Raiden without running a full node - which will be the vast, vast majority - Raiden tokens will have to be bought and used. Users who run a full node will not require Raiden tokens. I heard that the token isn't needed, and the ICO was just a 'cash grab'... Originally, Raiden did not plan to launch a token or hold an ICO of its own. However, the company changed tack and held an ICO which raised just shy of 110,000 ETH. 4 The crypto community, and ETH holders in particular, felt that they were being robbed of value. Those who had bought and held Ethereum would have hoped the news of Raiden would boost the price of their holdings. But with a separate token the perceived consensus was that this move took value away from ETH and into RDN, at least in the short term. Vitalik Buterin also weighed in on Twitter, saying he wished RDN hadn't held an ICO but equally stating that he understood it was necessary: “I wish they didn’t [hold an ICO] but I totally understand why they did and do not blame them.”5 The way things panned out left a bitter taste for many crypto investors. But the token certainly does have a very real use. Where can I buy Raiden tokens (RDN)? You can currently buy RDN at a handful of exchanges: Binance OKEx Huobi Kucoin EtherDelta Further reading: What are ERC20 tokens? Raiden 101 Vitalik Buterin blog update Sources and links: 1 https://raiden.network/101.html 2 https://mybroadband.co.za/news/banking/206742-bitcoin-and-ethereum-vs-visa-and-paypal-transactions-per-second.html 3 https://blog.ethereum.org/2018/01/02/ethereum-scalability-research-development-subsidy-programs/ 4 https://token.raiden.network/ 5 https://twitter.com/VitalikButerin/status/911300771819352064?ref_src=twsrc%5Etfw&ref_url=https%3A%2F%2Fwww.ethnews.com%2Fvitalik-buterin-responds-to-raiden-ico
InvestInBlockchain - Cryptocurrencies in the Top 100 With Working Products
📷 Bitcoin is the cryptocurrency that started it all back in 2009, after the global financial crisis and subsequent bailouts of banks left many people disenfranchised with fiat currency and outdated, insecure financial infrastructure. Today, Bitcoin is being used for peer-to-peer payments across the globe. More than that, though, it is leading the way towards a future in which financial technology is trustless, secure, resilient, and censorship resistant. Without Bitcoin, this list would not exist.
📷 The platform that brought smart contracts to the blockchain, spurring a minor revolution in the cryptocurrency ecosystem. Before Ethereum, Bitcoin and its transaction-oriented design was the central focus of most blockchain projects. After Ethereum, teams saw the value of decentralized apps (dapps) and smart contracts, and shifted their focus to compensate. Vitalik Buterin’s Ethereum whitepaper was released in late 2013. The project itself was announced January 2014, with a crowdsale the following July. The system officially went live in July 2015. Since then, hundreds of businesses, individuals, and blockchain projects have adopted Ethereum as their main smart contracts platform.
📷 Ripple is focused primarily on one thing: fast and cheap international transactions. Current banking infrastructure has failed to evolve in the 21st century, such that it still takes 3-5 business days on average for an international transfer to be processed. With just 4 second transaction times and at a fraction of the cost of a wire transfer, Ripple’s working product is already impacting the banking sector. The big knock against Ripple is that its native token, XRP, is completely unnecessary. Indeed, driving adoption of Ripple’s banking solutions is far easier than getting real-world adoption for XRP. If you’re interested in seeing a discussion about how XRP adoption will occur, you might find this reddit thread worth a read. Meanwhile, all of us will just have to wait and see whether XRP adoption strategies ultimately come to fruition.
Bitcoin Cash (BCH)
📷 Bitcoin Cash was created in 2017 when the first ever hard fork of the Bitcoin blockchain took place. The split was the result of Bitcoin’s 1MB blocks filling up. Transaction speeds were declining, fees were increasing, and it became clear to the community that the current model wasn’t sustainable for scaling. In a move that still causes cryptocurrency fights to this day, Bitcoin and Bitcoin Cash soon emerged as separate but similar projects. BCH has 8x the block size of BTC, giving it roughly 8x the transaction throughput. Its fees and transaction times are much faster, as predicted. Learn more about Bitcoin vs Bitcoin Cash.
📷 The Stellar project and its associated Lumens (XLM) token was forked from the Ripple protocol in 2014. Stellar has come into its own since then, providing a blockchain connection service for fiat transactions between banks, payment systems, and people. Stellar is fast and reliable, and it works with practically no fees for the end-user. Stellar is a payments system, meaning its job is to move money as efficiently as possible. Partnerships with banks and financial institutions were key in evaluating its status, as was the ability to actually send money using the network. Several non-profits and commercial entities have agreed to use Stellar as part of their financial infrastructure. Recently, the team partnered with IBM and KlickEx to facilitate cross-border transactions in the South Pacific and announced an affiliate with Keybase to streamline international transactions. Stellar also has projects being builton its network by major established entities. IBM’s blockchain division is using XLM for their payments infrastructure, for example, and the Veridium startup is working with both organizations to tokenize its carbon credits market.
📷 Litecoin is a Bitcoin fork that was created in 2011 by Charlie Lee as a cheaper and faster (2.5 minute block time instead of 10) alternative to Bitcoin. This is accomplished predominantly because Litecoin uses a Scrypt hashing algorithm instead of the SHA-256 algorithm used by Bitcoin. It’s common to hear Litecoin called “digital silver” to Bitcoin’s “digital gold,” and in reality Litecoin does not really expand upon the functionality of Bitcoin in a significant way so much as it makes different tradeoffs. That being said, it does succeed in being cheaper and faster to use than BTC, which has led to it being accepted by hundreds of merchants and thus making Litecoin one of the most widely used cryptocurrencies for digital payments.
📷 Tether is an unusual project. Whereas most cryptocurrencies rise and fall in value, Tether was designed to stay the same, fixed at a 1:1 ratio with the U.S. dollar. This allows users to store, send, and receive digital currencies across platforms without incurring significant losses due to value fluctuations. The Tether stable coin sounds straightforward, but the project isn’t without controversy. USDT is supposedly backed by real USD sitting in a bank account. But in which account? Who controls it? And is Tether being used to manipulate the value of Bitcoin? It’s all part of the Tether controversy.
📷 Released in 2014 as a fork of Bytecoin, Monero has since made a name for itself as the most popular privacy coin on the market. Most cryptocurrencies offer little in the form of anonymity. Monero was built for privacy from the ground-up, featuring stealth addresses, ring signatures, and complete coin fungibility. All of this adds up to a near-perfect cloak of anonymity, allowing Monero users to conduct transactions without exposing their identity. Monero has had steady growth over the years thanks to a dedicated team of developers and an active community. The project continues to evolve with new privacy features and improved transaction security.
📷 NEO was founded in 2014 as one of the earliest smart contract platforms, giving it a wide breadth of possible functionality. The platform’s strongest use case is digitizing traditional assets so that they can be easily tracked and exchanged on the blockchain. NEO is also well-known as the “Chinese Ethereum,” and the fact that it is a Chinese-based project does seem to make Chinese dapp developers somewhat more likely to build on top of it than other platforms. In fact, NEO has already supported dozens of ICOs and remains one of the predominant platforms for supporting smart contracts and dapps.
Binance Coin (BNB)
📷 Binance Coin is an exchange token used to reduce trading fees on the Binance platform. Users can opt to pay exchange, listing, and withdrawal fees using BNB and enjoy as much as a 50% discount on all charges. This turns out to be a powerful incentive for purchasing and holding BNB, as what trader doesn’t enjoy saving money on transactions? Binance Coin is an ERC-20 token that runs on the Ethereum blockchain. Its purpose is extremely limited, but because such a vast number of Binance users transact with it every day, it qualifies as a working and active product.
📷 Zcash is another immensely popular privacy coin that often cracks the top 20 cryptocurrencies. It uses the tagline “internet money” and promises to fully protect the privacy of transactions with zero-knowledge cryptography. Zcash provides anonymity by shielding transactions on the blockchain, preventing anyone from seeing the sender, recipient, or value of each transaction. The technology is so effective the Ethereum team is investigating it to enable anonymous transactions on their network. Zcash has grown in leaps and bounds in 2018. The dev team published a roadmap through the year 2020, which includes a major features upgrade in the October 2018 Sapling release. Coinbase is also considering listing Zcash, which is a huge boost for any cryptocurrency.
📷 Qtum is a smart contracts platform similar to Ethereum, only with a stronger focus on value transfers and decentralized apps. It’s meant to be something of a hybrid between Bitcoin and Ethereum, allowing businesses to build smart contracts on the platform or just focus on cryptocurrency transactions. Qtum launched in March 2017, and dashed straight to the top. The initial offering sold over $10 million in tokens after just 90 minutes. The project differentiated itself by providing a rare Proof-of-Stake smart contracts platform designed to compensate for some of Ethereum’s shortcomings, including lack of compatibility for mobile devices. Qtum released its mainnet in September 2017, opening the doors to a fully functional smart contract and dapps platform. Several projects already have an established presenceon the network. One of the more exciting ones is Space Chain, which aims to create an open-source satellite network anyone can use for data transmission, storage, and development.
0x Protocol (ZRX)
📷 0x Protocol has one of the most important working products in the entire Ethereum ecosystem. It is a permissionless, open-source protocol that facilitates trustless exchanges of Ethereum tokens through relayers and dapps that build on top of the protocol. Not only has 0x been providing this functionality for over a year now, but they’ve been working to expand the protocol functionality significantly since that initial launch. In 0x protocol 2.0 and beyond, it will be possible to trade tokens built on standards besides ERC-20, including non-fungible ERC-721 tokens. In a market full of scams and vaporware, 0x’s valuable contributions to the Ethereum ecosystem have made it one of the best performing cryptocurrencies of 2018.
📷 Bytecoin is another popular privacy-focused cryptocurrency with a strong community and user base. Transactions on the Bytecoin blockchain are instantaneous, untraceable, unlinkabe, and resistant to blockchain analysis. Bytecoin has been around for a long time now, with contributions to the project beginning in 2012. However, that hasn’t stopped the project’s developers from continuously improving the product. The recently updated Bytecoin roadmap has a hard fork for a consensus update scheduled for August 31, as well as numerous initiatives for community growth constantly in the works.
📷 Founded in 2015 by former Bitcoin developers, Decred’s most important working product is its solution to Bitcoin’s biggest problem. No, not scalability… blockchain governance. You see, early Bitcoiners have been debating block size limitations and the efficacy of other scalability solutions like the Lightning Network for years, even though the problem of scalability really only became discussed in the mainstream in 2017. With its community-based governance model and strong adherence to the core ethos of decentralization, Decred is built to evolve and improve rapidly. That means that it’s equipped to handle not only the scalability problem today, but other big problems that might arise down the line. When you have poor governance, it is an arduous process making any upgrades to a project, no matter how necessary they may seem to the majority of coin holders. Decred’s best-in-class and still improving governance model give it an intriguing case to be a leader in digital payments for a long time to come.
📷 BitShares aims to improve worldwide access to financial services via blockchain. The tagline “assist the unbanked” summarizes the project nicely. In practice, this translates to BitShares operating as a decentralized exchange, one that was built from the ground-up to avoid scalability issues and keep transaction fees low. BitShares was launched in 2014 by Dan Larimer, who would then go on to take a lead development role in both EOS and Steem. The current state of the project offers decentralized asset exchange, price-stable cryptocurrencies, recurring and scheduled payments, user-issued assets, and more, all available through a decentralized system powered by delegated PoS consensus.
📷 Steem is the cryptocurrency that powers Steemit, a decentralized social media platform that incentivizes user participation through micropayments. Think of it like Reddit, only instead of just upvoting or downvoting posts, users can actually reward creators for their effort. Steem is a functional cryptocurrency used exclusively on the Steemit platform. That gives it something of a limited use, but seeing as how Steemit is live and boasts a few hundred thousand users, it’s hard to argue it isn’t a working product. Some people may even beearning money using Steemit.
📷 Siacoin is one of the leaders in decentralized cloud storage, a more secure and affordable alternative to centralized cloud storage solutions like Amazon S3, Google Drive, iCloud, Dropbox, and others. Sia 1.0 was launched in June 2016, and has achieved considerable adoption since then. With the $200 billion cloud storage market widely seen as one of the spaces most ripe for blockchain disruption, Sia has gotten off to a nice start by offering a functional decentralized cloud storage platform for over 2 years.
📷 Augur is one of the most recently launched products on this list. The platform mainnet went live in early July 2018, bringing to fruition almost 4 years of post-ICO work. Augur is a decentralized prediction market that uses game theory to generate crowd-sourced insights. Essentially, thousands of people working together have shown the remarkable ability to forecast outcomes. With Augur, users can put REP tokens as bets on these predictions, essentially creating a form of “useful social gambling.” Augur’s release was a long time coming. The project started as far back as 2014, nearly a year before the ICO. The creators cite the complexity of Augur’s smart contracts as the chief cause of the lengthy development time. Regardless of its past, Augur is now a live product with a bright future. Over 300 predictions have already been made, with the largest winning payout hitting $20,000. Betting volume even exceeded $1 million within the first weeks of launch.
Basic Attention Token (BAT)
📷 Basic Attention Token was one of the easiest projects to include on this list. That’s because its working product, Brave Browser, has more than 3 million active usersbetween its mobile and desktop platforms, making it one of the most widely-used working products in the blockchain space. Not only is Brave Browser functional, it’s the only browser on the market that has built-in ad-blocking and tracker blocking, making the browsing experience both cleaner and faster than what you get with other popular browsers like Chrome and Firefox. The future remains uncertain for the BAT token itself, as its adoption depends heavily on whether or not advertisers buy-in to the Brave model, as well as how willing Brave users are to be shown relevant ads and to pass along the BAT they earn to content publishers. Given Brave’s success in just a short time since being launched, though, the future does appear promising for BAT.
📷 Nano (formerly RaiBlocks) is all about scalability. The coin has nearly instant transactions with a completely fee-less structure. The platform accomplishes this by creating a unique blockchain for every account, preventing bloat and allowing for practically infinite scalability. Nano’s motto of “do one thing and do it well” has gotten them a long way. The team doesn’t have to deal with scaling or slowdown issues thanks to the underlying structure of the project, allowing its roadmap to focus on wallet updates and outreach. This is one cryptocurrency that’s essentially feature complete, and it has been for some time.
📷 Golem has set out to be the Airbnb of computing resources. Have you ever needed extra GPU power to finish up a render? How about processing scientific data similar to the [email protected] project? Even if you don’t have those needs, a lot of groups do. Golem aims to provide easy access to those resources, all of which are rentable for a small cryptocurrency fee. Golem hit the mainnet launch button in April 2018, and was met with a fair amount of fanfare. One of the main goals for the feature-incomplete launch was to push the product out so real users could put it to work. The team was interested in strengthening their interactions with end users to help guide the future of the platform. The team has several major milestones planned for the coming months, so the mainnet release is only just the beginning.
Pundi X (NPXS)
📷 Pundi X has been shooting up the market cap rankings so far in Q3 2018, and they also happen to have a working product that just recently became available to retailers. The primary Pundi X product is a point-of-sale (POS) device that enables quick and easy mobile transactions for both fiat and cryptocurrencies. 500 POS devices are already being used by retailers in Asia, and there are thousands more scheduled to be distributed in the coming months. In addition, Pundi X also offers XPASS cards, cryptocurrency credit cards that can work in place of mobile apps for making digital payments. What makes the Pundi X project noteworthy is that it enables consumers to pay retailers in cryptocurrencies like BTC and ETH, and it immediately converts the payments into local fiat currencies so that retailers don’t need to worry about price volatility of the cryptocurrencies. This makes it significantly easier for people to use cryptocurrencies in their daily lives, making Pundi X an exciting project for blockchain enthusiasts who are looking for signs of future mass adoption.
📷 Waves was the first ever blockchain platform that made it possible for anybody — regardless of their programming experience — to create blockchain tokens. Additionally, Waves has a decentralized exchange where tokens can be traded and exchanged with fiat currencies. Since the project’s first releases in 2016, Waves has gone on to make their DEX accessible from mobile phones and expanded its functionality significantly, while also building several strategic partnerships to help grow the Waves community and user base. Ultimately, though, the Waves Client is the project’s most important working product, as it is what allows tokens to be issued, stored, sent, and exchanged among users.
KuCoin Shares (KCS)
📷 Similar to Binance Coin, KuCoin Shares is an exchange token that can be used to pay reduced fees on cryptocurrency trades. KCS has the added bonus of paying dividends to long-term hodlers, as well, paying out a 5% ROI for most users. The nature of KuCoin Shares is one of the reasons the KuCoin exchange has gotten so much attention since it appeared on the scene. The tokens themselves are limited in scope, of course, but the sheer number of people using them for trades and buying them for passive income is enormous.
📷 Wanchain aims to build new and improved financial infrastructure to seamlessly connect the digital economy through blockchain interoperability. The use cases for Wanchain’s network are vast, and they include decentralized financial services, supply chain logistics, medical data sharing and security, digital ID management, and more. With the recently released Wanchain 2.0, it is now possible to transfer Ether cross-chain using Wanchain’s Ethereum Mapping Token, WETH. Ethereum interoperability is just the start, though, and it’s expected that cross-chain support for Bitcoin and a couple of ERC-20 tokens will follow before the end of 2018.
📷 Komodo is a fork of Zcash that uses the same zk-snark cryptography to hide information about transaction participants and amounts being sent. Functional privacy coins aren’t unique (there are a handful on this list) but Komodo does have some unique features. For one, Komodo was the first ever decentralized initial coin offering. Moreover, Komodo helps other developers to build their own customizable blockchain solutions, from building and securing independent blockchains and launching decentralized ICOs, to integrating projects into the cryptocurrency ecosystem. KMD would already qualify as a working product for its anonymity features on digital payments, but add the end-to-end blockchain building solution and it’s clear that Komodo is making meaningful contributions to the cryptocurrency ecosystem.
📷 Ardor is a scalable blockchain platform that allows businesses to create their own child chains and tokens with relative ease. This helps keep blockchain bloat to a minimum and provides multiple transactional tokens without sacrificing core chain transactions. It’s also a remarkably energy efficient platform that uses Proof-of-Stake to power consensus. Ardor launched its mainnet on January 1, 2018 after a full year in testnet status. Its core features are largely in place, with the roadmap set to improve things like scalability and snapshotting. The Blockchain-as-a-Service-platform hosts a few projects of its own, including the Ignis ICO, which was the first child chain on the mainnet.
Huobi Token (HT)
📷 Huobi is a digital asset exchange platform founded back in 2013, now offering well over 250 different trading pairs. The Huobi Token, meanwhile, is an ERC-20 token that is used on the exchange for discounts on trading fees of up to 50%. In addition, 20% of the income generated on the Huboi Pro trading platform is used to buy back HT on the open market. Unlike most buyback programs, the main purpose of Huobi’s program isn’t to reduce the circulating supply of HT. Rather, the HT that is bought back goes into a Huobi Investor Protection Fund, which is used to compensate Huobi users if they lose coins or tokens on the platform, as well as to ensure market stability and protect investor interests.
📷 ZenCash is yet another privacy coin with a working product in the Top 100, originally launched in the first half of 2017. What makes ZenCash unique is that it’s the first blockchain with Transport Layer Security (TLS) integration for node encryption, making communication on the ZenCash network both private and highly secure. Some other interesting parts of the ZenCash product include Tor nodes and built-in chat messaging services. In the future, the ZenCash team will deliver a DAO Treasury Protocol-level Voting System as well as a scalability solution to handle greater transaction volume.
📷 PIVX is another privacy coin that focuses on keeping users and their associated transactions hidden under a cloak of secrecy. The project also tries to keep transactions as fast and fee-less as possible, something not all privacy platforms can boast about. PIVX launched in January 2016. The coin is currently spendable and delivers the privacy features it promises, though it’s not yet a widely accepted currency by merchants. Future plans for PIVX include governance functions to engage the community, wallet voting, and its own zPIV decentralized exchange.
Kyber Network (KNC)
📷 Kyber Network launched their mainnet in Q1 2018, enabling instantaneous and secure inter-token settlements through a Decentralized Liquidity Network. It’s currently possible to swap ERC-20 tokens on the network with just a few mouse clicks, giving it some basic functionality that is already being used to improve liquidity for Ethereum tokens. In the future, however, Kyber Network will expand its functionality significantly in an effort to seamlessly connect dapps, DEXes, protocols, payment systems, token teams, investors, fund managers, and digital wallets.
📷 Bancor is a liquidity provider that enables users to exchange tokens without the need for a third-party to be involved in financing the transaction. Gaining liquidity is incredibly important for young cryptocurrency projects, as a lack of liquidity makes it risky for investors to buy a considerable amount of a given coin or token, knowing that it might be exceedingly difficult to sell should they wish to. Bancor’s technology makes it possible to convert one token to another, so that investors can be confident that they won’t be stuck involuntarily holding a cryptocurrency that they want to sell. This functionality makes the Bancor Liquidity Network one of the most promising working products on this list, and one that has already achieved a good deal of adoption.
Loom Network (LOOM)
📷 Loom Network is still less than a year old, having been founded in October 2017. However, they have accomplished a lot in that short time span, including having launched numerous tools to help software developers learn how to build blockchain solutions. The most important of these tools — and Loom’s biggest working product — is the Loom software development kit (SDK). However, Loom Network is far more than just a simple blockchain coding academy. It is also a production-ready scalability solution for Ethereum, as the Loom developer toolkit helps programmers to build highly scalable dapps which connect to the Ethereum blockchain through special side chains called DappChains. The project may still be in its infancy, but Loom Network is already contributing more utility to the cryptocurrency ecosystem than the vast majority of other cryptocurrency projects.
📷 Polymath wants to be the world’s go-to resource for security tokens on the blockchain. What Ethereum did for tokens, Polymath will do for securities. The advantages of this are enormous, but the Polymath team likes to point to 24/7 market access, the elimination of middlemen, and trading access for 2 billion unbanked people around the world as the chief benefits of their efforts. The Polymath platform launched in October 2017, and has since released a new security token every week, attracting investors and traders alike. It’s not as exciting of a project as some other blockchain tech, but it’s delivering on its promises with a working product.
Bibox Token (BIX)
📷 Bibox is a encrypted digital asset exchange whose primary differentiator from other crypto exchanges is that it integrates AI technology. The purpose of the AI is to help Bibox’s traders, which it does by providing quantitative computation and analysis of trading activity, personalized risk allocation strategy, speech recognition, and objective analysis of the various coins and tokens listed on the exchange. The Bibox exchange first launched back in November 2017. It has operation centers in the US, Canada, mainland China, Hong Kong, Japan, and Estonia. BIX token holders receive 20% of the exchange profits, and also get discounts on trading fees, similar to Binance. https://www.investinblockchain.com/top-cryptocurrencies-working-products/
Decentralized security token exchange, DSTOQ, has launched a platform called its minimum viable product (MVP). MVP allows people to invest in real assets such as stocks, bonds, and commodities using cryptocurrencies. This platform runs using Stellar’s blockchain testnet, and all transactions will happen completely on-chain.
Agricultural Bank of China (ABC), the world fourth largest bank by assets, announces it will making its first loan on a blockchain system. The loan, valued at USD$300k, is meant to support the local tea industry in the Guizhou province and is backed by a piece of agricultural land.
“Civilized blockchain”1 company Billon, has partnered with Fidelity National Information Services (FIS) to develop blockchain technology solutions. Billon implements blockchain solutions for the main purpose of processing fiat currencies. FIS will utilize Billon for document and identity management, the exploration of joint sales and product development opportunities, and smartphone micropayments among other services.
SBI Group, a Japanese financial services company, has announced plans to develop a platform to trade cryptocurrency derivatives. The platform would help crypto investors hedge their risk by offering cryptocurrency credit default swap (CDS) trading. SBI will accomplish this through its recent 12% purchase of North Carolina-based digital marketplace developer Clear Markets.
Equity research provider Fundstrat Global Advisors has announced that it will begin accepting Bitcoin (BTC) as payment for accessing research reports. Fundstrat is using payment operator BitPay, which has processed over USD$1 billion in Bitcoin payments CY2017, to process their new BTC payments accepted from institutional investors, high net-worth clients, and financial advisors.
The most popular cryptocurrency markets tracking platform, CoinMarketCap (CMC), has added a professional-grade API, and support for derivatives markets to its services. The API provides developers with access to aggregated data packages, providing everything from price and market cap, to trading pair data and conversions. CMC is marketing this product to those who need to back-test trading strategies, and run simulations more accurately.
Logos Network, a decentralized payments platform, successfully raised USD$3mm in seed funding. Logos is hoping to build a quick and scalable P2P payments network on a new blockchain. The payments network plans to be quick, scalable, and secure.
The Stuggart Börse, Germany’s second largest stock exchange, has announced an initiative to construct a multilateral cryptocurrency trading platform, as well as an initial coin offering (ICO) platform. The exchange already launched in May a crypto trading app called Bison, which features zero-fee transactions.
Intercontinental Exchange (ICE), operator of the New York Stock Exchange (NYSE) and 22 others, will develop a Microsoft cloud-based digital asset ecosystem. ICE is creating a new company for this, called Bakkt, which will work closely with companies including Starbucks and BCG. The ecosystem is planned to be a one-stop-shop for all consumers, from retail to institutional, to buy, hold, sell, and spend cryptocurrencies on a communal network. ICE will also launch physically-delivered BTC futures contracts.
The Chamber of Digital Commerce, an American advocacy group promoting the blockchain industry, is producing new guidelines to aid the in the responsible growth of the initial coin offering (ICO) markets and cryptocurrency markets all together. These guidelines were released in a whitepaper detailing current and future regulations for investor reference, a set of principles for trading platforms and token sponsors to follow, and a general discussion about the growth of the cryptocurrency industry so far.
The South Korean government has proposed revisions to its tax law, affecting cryptocurrency exchanges. The proposition states that cryptocurrency exchanges will be exempt from the tax benefits given to startups and small-mid-sized businesses. It is important to note that new propositions might be made to change this before implementation, but the South Korean government doesn’t believe that crypto transaction companies do not generate added value like other companies do.
Indian cryptocurrency traders are finding ways to circumvent the India government’s decision to ban cryptocurrency trading. Traders are now making use of a Dabba trading which refers to making OTC trades that are off the books. Dabba traders execute trades through platforms at international banks in Dubbai, Europe and the UK. Indian stock traders have used this method for years, and has experienced an upsurge after the crypto ban.
The U.S. Consumer financial Protection Bureau (CFPB) has created an Office of Innovation. The Office of innovation is responsible for the development of a regulatory framework surrounding new products and services in the cryptocurrency, blockchain, and microlending fields. This regulatory sandbox could give some guidance on creation of regulatory frameworks around innovative fintech companies.
South Korea Financial Supervisory Service is advising local regulators to work towards creating an integrated blockchain system for stocks transactions. The group finds the use of a centralized ledger to be inefficient and vulnerable to hacks.
It was recently reported that HTC will be releasing a new mobile phone utilizing decentralized ledger technology, but Litecoin (LTC) founder Charlie Lee announced July 29th that he will be one of HTC’s advisors on the smartphone. The phone will be called Exodus and is expected to be the first blockchain phone. Exodus’s built-in cryptocurrency wallet will now natively support LTC and the Lightning Network (LN), in addition to Bitcoin (BTC) and Ethereum (ETH).
Cointelegraph.com reported that digital asset exchange Huobi will begin supporting trades in the Indian rupee (INR) on its over-the-counter (OTC) service. Huobi’s peer-to-peer (P2P) trading platform will allow INR users free trading in Bitcoin (BTC), Ethereum (ETH), and Tether (USDT). This comes at a good time for Indian cryptocurrency traders after the Reserve Bank of India banned banks from dealing with cryptocurrency-related companies in early July.
IOHK, the company behind the popular cryptocurrency Cardano (ADA), announced that it has launched the testnet for a new Cardano virtual machine. The virtual machine, called IELE, provides developers with a stronger and more reliable platform for developing smart contracts on Cardano’s blockchain.
IoT and blockchain platform Ambrosus has announced the launch of its mainnet, called AMB-NET 1.0. Ambrosus improves pharmaceutical and food supply chains by allowing companies to record private and public supply chain data on its blockchain. Organizations can work with the Ambrosus Network through its native AMB token.
San Francisco-based platform, DCEX, will begin accepting registration applications for its new cryptocurrency exchange. DCEX’s base currency, the currency participants use to exchange for other currencies, will be Ripple’s XRP. This is a change from the cryptocurrency exchange norm of using Bitcoin (BTC) and Ethereum (ETH) as base currencies. Not basing all transactions off of Bitcoin is a step in the right directions for pushing the market to be more independent from it.
Thomson Reuters, a Canadian mass-media and information company, has announced a partnership with CryptoCompare, a cryptocurrency data tracking resource. CryptoCompare will provide Thomson Reuters will trade and order book data on 50 cryptocurrencies.
Major Cineplex, the largest movie theater chain in Thailand, is integrating cryptocurrency payments to permits moviegoers to buy anything from tickets to popcorn. Major Cineplex is partnering with RapizPay to deploy the digital currency payment system. This comes a week after the Thai Securities and Exchange Commission began allowing cryptocurrency operators to file license applications.
Coinbase, one of the largest cryptocurrency services in the world, has announced in a blog post that Jeff Horowitz, an ex-Pershing exec, has joined as company’s new Chief Compliance Officer. Horowitz has ample background experience for this position, as he was Managing Director and Global Head of Compliance for Pershing, a banking regulator for the FDIC, and even led compliance and anti-money-laundering (AML) programs at Goldman Sachs, Citigroup, and Salomon Brothers.
Binance, the world’s most popular cryptocurrency exchange, has made its first-ever acquisition, purchasing crypto wallet provider Trust Wallet. This move appeals to cryptocurrency investors wary of keeping their coins on centralized custodial services as Trust Wallet now introduces Binance users to decentralized custody. The decentralized wallet will be offered on mobile platforms, and supports coins built off of Ethereum’s protocol. You can read more about decentralized exchanges in our latest Crypto Quant Shot: Atomic Swaps, Decentralized Exchanges, and the Future of Crypto Exchanges.
Google has announced that later this year, it will introduce open-source integrations of Ethereum and Hyperledger applications through its Google Cloud Product marketplace. This move pushes Google into the blockchain services industry, thereby joining others such as Amazon Web Services, IBM, Oracle, and Microsoft Azure.
U.S. lawmakers working with the Congressional Valley Fever Task Force are looking for blockchain applications to help fight infectious fungal diseases. The lawmakers have proposed a bill as a part of the FORWARD Act for the creation of a blockchain pilot hoping to improve the way doctors share information about endemic fungal diseases such as Valley Fever. If information could be exchanged between doctors quicker and more efficiently, they would be better equipped to treat these infectious diseases.
Mobile engagement firm MobileBridge, has launched a blockchain loyalty program called Momentum. Momentum will offer other companies many data-based insights, and consumers full custody of their earned cryptocurrency rewards. Consumers can earn loyalty cards and other rewards for simply shopping at their favorite stores. These rewards can be exchanged for Momentum tokens, and then other branded reward tokens to be used with other companies.
CoinMarketApp, a cryptocurrency news multi-use app, has released compatibility with iOS and Android smartphones. CoinMarketApp is not like typical cryptocurrency apps, in that it offers crypto historic data, prices, mining information, trustworthy news, and even portfolio services.
Northern Trust, an asset manager with USD$954bn in AUM announces plans to start a custody service for digital assets. Pete Cherecwich, Northern Trust’s head of corporate and institutional business, explained that the firm plans to offer custodial services similar to others, but with lower fees.
Swissquote, a Switzerland-based online banking firm which recently added cryptocurrency investing to its services, has seen a 44% profit increase in this C1H2018 relative to C1H2017. Throughout the second half of CY2017, Swiss quote has allowed trading in Bitcoin (BTC) with the EUR and USD, as well as Ethereum (ETH), Bitcoin Cash (BCH), Litecoin (LTC), and Ripple (XRP).
MINDOL is a blockchain platform aiming to disrupt the entertainment provider industry in Japan. MINDOL’s whitepaper states a growing demand for and heavy government investing in spreading Japanese culture throughout the world, including animations, games, music, and movies. MINDOL hopes to regularly produce programs on TV. MINDOL’s central network, called eMINDOL, lets consumers purchase products, watch content, and even invest in the projects and artists they like.
Telegram, a popular desktop and mobile app messenger, recently executed an ICO, raising USD$1.7 billion. However, US-based cybersecurity startup Virgil Security, praised the fact that Telegram published the application’s API on an open source platform for developers to review, but has uncovered several security flaws with Telegram’s ID verification app Passport. Virgil discovered issues with their encryption methods and the way they protect stored data. These issues are very important to fix if Telegram wishes to begin accepting payments on its platform.
Coinbase, one of the world’s largest cryptocurrency trading services, has now allowed users in the UK to purchase cryptocurrencies with the British Pound. Before this announcement, users in the UK would have had to acquire Euros in order to purchase cryptos on Coinbase, which sometimes took multiple days.
The government of Queensland, Australia is giving USD$8.3mm to a crypto start-up as part of the state’s innovation funding initiative. The start-up’s goal is to increase the number of tourists to Central Queensland through selling travel offers based in different cryptocurrencies.
RandomCrypto, a fintech firm working with cryptocurrencies has released a Bitcoin (BTC) mining calculator, which improves upon the details given by competing products. Random Crypto CEO Josh Metnick says he developed this product after “many years of getting screwed… by mining companies,” and that his goal is to “bring more truth, accuracy, and transparency to [proof-of-work] mining.”1 The calculator shows that at today’s current BTC prices, most bitcoin mining hardware on the markets is unprofitable.
Chinese company Seven Stars Cloud, has announced plans to build a USD$300 million crypto hub in Hartford, CT. Seven Stars Cloud is a fintech company hoping to create a community for itself and other fintech firms to collaborate on machine-learning, robotics, and crypto-related projects. The firm is also trying to launch a fintech college at schools near Hartford, CT such as Yale University, University of Hartford, University of New Haven, and University of Connecticut.
Canaan Creative, the world’s second largest provider of Bitcoin mining components has announced a new product called the AvalonMiner Inside. The Avalon Miner Inside is essentially a television with built-in Bitcoin (BTC) mining capabilities. The TV will be powered by artificial intelligence and will also enable voice dictation. The mining components possess a 2.8 trillion hashes-per-second hash rate, and even includes a profitability calculator to measure performance.
Bitfi, a cryptocurrency hardware wallet manufacturer claiming it is “unhackable”, denies claims that it was hacked. Bitfi and its official partner John McAfee offered a $100,000 bug bounty in July to try to get people to hack its wallet. But when one twitter user claimed to have done this, Bitfi CEO Daniel Khesin denied these claims amid no evidence of a hack, and because of the fact that the “hacker” refused the bounty reward.
Switzerland-based cryptocurrency platform MCO has added Litecoin (LTC) to its supported coins. MCO enables users to purchase, sell, and trade cryptocurrencies from its mobile app. Formerly known as Monaco, MCO has amassed over 180,000 downloads, and expects to widen its user base as it adds more coins to its platform. This app will soon integrate with a Visa card allowing international purchases.
Hong Kong cryptocurrency exchange OKEx says it will have to claw back millions in USD$ following a single user’s large bet on bitcoin futures (the user lost “the bet”). Each futures contract has a notional value of $100, and OKEx estimate the total value of the position was over $400 million. OKEx initiated a forced liquidation of the account but because of the size, the exchange has had to trigger “societal loss risk management” mechanisms because of the size of the order. After insurance coverage is considered, the aggregate loss to investors is around BTC$1,200 (USD$8.8mm), which will "split proportionately by all profited traders' realized + unrealized gains".
Coinbase Commerce, Coinbase’s non-custodial merchant payment service, has launched a product integrating with e-commerce company WooCommerce. WooCommercie is currently used by between 21% and 28% of all web stores, and affiliated stores will now accept cryptocurrency payments from Coinbase Commerce users.
Top 50 Cryptocurrencies I thought this might be of real help for the ones that are just joining crypto and still want to read. Let’s face it: there are a lot of cryptocurrencies out there, with new ones coming out almost daily and old ones disappearing seemingly just as fast as they appeared. It’s easy to get overwhelmed. If you are new to cryptocurrencies, this is an excellent starting point to learn about each of the top 50 cryptocurrencies (by market cap). Even if you’re a crypto veteran, this is a great resource to reference if you ever get any of the top 50 confused, or if you want to read more about a new coin which has joined the ranks. Our hope is to point you in the right direction, spur your interest to do more research, and steer you away from the potential scams out there (And yes, there are potential scam coins in the top 50!) Here at Invest In Blockchain, we are obsessed with researching the internet for all things crypto. The information found in this post is the result of hundreds of hours of painstaking research by me and other writers on our team. Note that this list is constantly changing and I will do my best to keep it up-to-date, but the top 50 moves almost daily! Please refer to coinmarketcap.com for the latest information on the top 50 cryptocurrencies and their prices. Let’s get started! (Information accurate as of May 23, 2018)
#1 – Bitcoin (BTC)
📷 The king of the crypto world, Bitcoin is now a household name; to many, it is synonymous with “cryptocurrency”. Its purpose is to provide a peer-to-peer electronic version of cash to allow payments to be sent online without the need for a third party (such as Mastercard). The rapid rise in Bitcoin’s price has brought about an explosion of new Bitcoin investors. With the huge increase in interest has come a rise in merchants accepting Bitcoin as a legitimate form of payment. Bitcoin is fast moving towards its goal of becoming a currency accepted worldwide. Bitcoin’s development is led by Bitcoin Core developer Wladimir J. van der Laan, who took over the role on April 8, 2014. Bitcoin’s changes are decided democratically by the community. For an in-depth look at Bitcoin, including an explanation of Bitcoin mining, Bitcoin’s history, an analysis of Bitcoins’ value and a description on how bitcoin actually works, see our comprehensive guide “What is Bitcoin? Everything You Need to Know About Bitcoin, Explained“. For a more detailed description of Bitcoin’s economics, what makes money and how Bitcoin works in the economy as a whole see: “Bitcoin Explained” and “Bitcoin is a Deflationary Currency”.
#2 – Ethereum (ETH)
📷 Ethereum is the revolutionary platform which brought the concept of “smart contracts” to the blockchain. First released to the world in July 2015 by then 21-year-old Vitalik Buterin, Ethereum has quickly risen from obscurity to cryptocurrency celebrity status. Buterin has a full team of developers working behind him to further develop the Ethereum platform. For more background information on Buterin, read our article, “Vitalik Buterin: The Face of Blockchain”. Ethereum has the ability to process transactions quickly and cheaply over the blockchain similar to Bitcoin, but also has the ability to run smart contracts. For future reading on smart contracts, see “What’s the Difference Between Bitcoin and Ethereum”; but for now, think automated processes which can do just about anything. For further reading on Ethereum, including an analysis of the platform’s strengths and future prospects, read “What is Ethereum, Everything You Need to Know Explained“.
#3 – Ripple (XRP)
📷 Ripple aims to improve the speed of financial transactions, specifically international banking transactions. Anyone who has ever sent money internationally knows that today it currently takes anywhere from 3-5 business days for a transaction to clear. It is faster to withdraw money, get on a plane, and fly it to your destination than it is to send it electronically! Not to mention you will be paying exorbitant transaction fees — usually somewhere around 6% but it can vary depending on the financial institution. Ripple’s goal is to make these transactions fast (it only takes around 4 seconds for a transaction to clear) and cheap. The Ripple team currently comprises over 150 people, making it one of the biggest in the cryptocurrency world. They are led by CEO Brad Garlinghouse, who has an impressive resume which includes high positions in other organizations such as Yahoo and Hightail. Check out “What is Ripple” for more information, including a closer look at what they do, controversies and future prospects.
#4 – Bitcoin Cash (BCH)
📷 Bitcoin Cash was created on August 1, 2017 after a “hard fork” of the Bitcoin blockchain. For years, a debate has been raging in the Bitcoin community on whether to increase the block size in the hope of alleviating some of the network bottleneck which has plagued Bitcoin due to its increased popularity. Because no agreement could be reached, the original Bitcoin blockchain was forked, leaving the Bitcoin chain untouched and in effect creating a new blockchain which would allow developers to modify some of Bitcoin’s original programmed features. Generally speaking, the argument for Bitcoin Cash is that by allowing the block size to increase, more transactions can be processed in the same amount of time. Those opposed to Bitcoin Cash argue that increasing the block size will increase the storage and bandwidth requirement, and in effect will price out normal users. This could lead to increased centralization, the exact thing Bitcoin set out to avoid. Bitcoin Cash does not have one single development team like Bitcoin. There are now multiple independent teams of developers. Read “What is Bitcoin Cash” for more information. You can also check out their reddit and official webpage.
#5 – EOS (EOS)
📷 Billed as a potential “Ethereum Killer”, EOS proposes improvements that can challenge Ethereum as the dominant smart contract platform. One main issue EOS looks to improve is the scalability problems which has plagued the Ethereum network during times of high transaction volume, specifically during popular ICOs. A perhaps more profound difference EOS has, compared to Ethereum, is the way in which you use the EOS network. With Ethereum, every time you make modifications or interact with the network, you need to pay a fee. With EOS, the creator of the DAPP (decentralized app) can foot the bill, while the user pays nothing. And if you think about it, this makes sense. Would you want to have to pay every time you post something on social media? No, of course not! In addition to this, EOS has a few other technical advantages over Ethereum such as delegated proof of stake and other protocol changes. Just know that EOS has some serious power under the hood to back up the claim of “Ethereum Killer”. EOS was created by Dan Larrimer who is no stranger to blockchain or start ups. He has been the driving force behind multiple successful projects in the past such as BitShares, Graphene and Steem. For more information on EOS such as how and where to buy EOS tokens, EOS’s vision and potential challenges, see “What is EOS”.
#6 – Litecoin (LTC)
📷 Similar to Bitcoin, Litecoin is a peer-to-peer transaction platform designed to be used as a digital currency. Due to some notable technical improvements, Litecoin is able to handle more transactions at lower costs. Litecoin has been designed to process the small transactions we make daily. Litecoin is sometimes referred to “digital silver” while Bitcoin is known as “digital gold”. This is because traditionally silver was used for small daily transactions while gold was used as a store of wealth and was not used in everyday life. The Litecoin blockchain is a fork from the Bitcoin chain. It was initially launched in 2011 when its founder, Charlie Lee, was still working for Google. Well-known as a cryptocurrency expert, Charlie Lee is backed by a strong development team who appear to be achieving what they set out to do. They have recently achieved a very notable accomplishment with the first successful atomic swap. For an in-depth discussion on what Litecoin does, how it is different than Bitcoin and the team backing up the development, see “What is Litecoin”.
#7 – Cardano (ADA)
📷 Cardano is a smart contract-focused blockchain. It was originally released under the name Input Output Hong Kong by Charles Hoskinson and Jeremy Wood, a few of the early team members of Ethereum, and later rebranded into Cardano. Cardano is trying to fix some of the largest problems the cryptocurrency world which have been causing ongoing issues for years such as scalability issues and democratized voting. They have the potential to challenge Ethereum’s dominance in the smart contract world. Cardano is developing their own programing language similar to Ethereum; however, they are focusing more heavily on being interoperable between other cryptocurrencies. While some cryptocurrencies are all bite but no bark, Cardano is quite the opposite. They are quietly focusing on a strong software which will be completely open-source. Cardano’s team comprises some of the best minds in the industry, and they seek to create a strong foundation which others can build upon for years to come. For up-to-date information on Cardano’s status see their Reddit page or official website. You can also read our article “What is Cardano” to learn more about them.
#8 – Stellar Lumens (XLM)
📷 In a nutshell, Stellar Lumens seeks to use blockchain to make very fast international payments with small fees. The network can handle thousands of transactions a second with only a 3-5 second confirmation time. As you may know, Bitcoin can sometimes take 10-15 minutes for a transaction to confirm, can only handle a few transactions a second and, in turn, has very high transaction fees. If this sounds a lot like Ripple, you’re right! Stellar Lumens was based off of the Ripple protocol) and is attempting to do similar things. Some of Stellar Lumens’ main uses will be for making small daily payments (micropayments), sending money internationally, and mobile payments. Stellar Lumens is focusing on the developing world and, more specifically, the multi-billion dollar industry of migrant workers who send money back to their family in impoverished countries. The Stellar Lumens team is led by Jed McCaleb, who has worked in numerous successful startups in the past such as eDonkey, Overnet, Ripple, and the infamous Mt. Gox. For more information on Stellar Lumens, including the history and what sets Stellar Lumens apart, see “What are Stellar Lumens”. You can also learn about the differences between Stellar Lumens and Ripple.
#9 – TRON (TRX)
📷 As stated in TRON’s whitepaper, “TRON is an attempt to heal the internet”. The TRON founders believe that the internet has deviated from its original intention of allowing people to freely create content and post as they please; instead, the internet has been taken over by huge corporations like Amazon, Google, Alibaba and others. TRON is attempting to take the internet back from these companies by constructing a free content entertainment system. This will enable users to freely store, publish and own data, giving them the power to decide where and how to share. The project is led by founder Justin Sun, who has been listed on the Forbes 30 under 30 list twice (in 2015 and 2017). In addition, Sun is a protégé of Jack Ma, founder of Alibaba Group, China’s former Ripple representative and the founder of Peiwo APP. Sun has assembled a strong team with heavy hitters including Binshen Tang (founder of Clash of King), Wei Dai (founder of ofo, the biggest shared bicycles provider in China), and Chaoyong Wang (founder of ChinaEquity Group). Sun has also secured the support of a few notable angel investors such as Xue Manzi. For up-to-date information on Tron and further discussion of the technology and team, see “What is Tron” and their website.
#10 – IOTA (MIOTA)
📷 IOTA has seen many of the issues Bitcoin and Ethereum have with the POW (proof-of-work) and POI (proof-of-importance) models and looks to improve them with their revolutionary transaction validation network simply called “tangle”. When issuing a transaction in IOTA, you validate 2 previous transactions. This means you no longer outsource validation to miners which requires wasteful amounts of computing power and usually a large stake of coins. These required resources are, in effect, centralizing the currencies which many believe were created to be decentralized in the first place. With IOTA, the more active a ledger is, the more validation there is. In other words, the more people who use it, the faster it gets. You don’t have to subsidize miners, so there are no fees on transactions. That’s right: zero. The IOTA team has been actively developing blockchain technology since 2011, and created the IOTA foundation and company in 2016. Since its emergence, the team has been continuously growing, attracting exceptional talent from around the world. For more information on IOTA’s team and their revolutionary“tangle” technology, check out “What is IOTA”.
#11 – NEO (NEO)
📷 A leading platform for smart contracts and sometimes referred to as “China’s Ethereum”. NEO (formally Antshares) hopes to digitize many types of assets which were formerly kept in more traditional means, and therefore make it possible to use them in smart contracts. To imagine a potential use case of NEO, think digitizing the title to a house into a smart asset, and then setting up that asset to automatically transfer to another person after payment for the house has been received. This would be, in effect, a simple smart contract. NEO founder Da Hongfei is a leading figure in the cryptocurrency world and has worked on numerous blockchain projects in the past. The development team consists of 6 in-house investors and a large community of third-party developers. For a complete overview of NEO, including the team, history and competitive analysis, check out “What is NEO”.
#12 – Dash (DASH)
📷 Dash (which comes from ‘digital cash’) aims to be the most user-friendly and scalable cryptocurrency in the world. It has the ability to send funds instantly confirmed by “double-send-proof” security with the added functionality of erasable transaction history and the ability to send transactions anonymously. Like Bitcoin, Dash is meant to be used as a digital currency but has some added values such as much faster transaction times and lower fees. For a slightly higher fee, Dash has the added function of “instant send” which allows transactions to be confirmed almost instantly. This is one of the main selling points of Dash because many believe that this feature would allow it to be used in brick and mortar establishments. The Dash development team consists of over 50 members and is led by former financial services professional Evan Duffield. For the latest on Dash, see their official website and reddit page. You can also read “What is Dash” to learn more about the project.
#13 – Monero (XMR)
📷 Monero is a digital currency designed to be used as a completely anonymous payment system. A common misconception with Bitcoin is that it is completely anonymous. In reality, all payments processed on the Bitcoin network are recorded on a public ledger (blockchain), so Bitcoin is actually only partially anonymous or “pseudonymous”. This means that you can, in theory, trace back every transaction a coin has been involved with from its creation. Though users aren’t able to inherently link the public key on the blockchain with the private keys used to store the coins themselves, there will always exist a correlation between the two. Monero has solved this problem by implementing cryptonic hashing of receiving addresses, therefore separating the coin from the address it is going to. This can be hugely valuable for anyone wishing to conceal their purchases. The Monero development team consists of 7 core developers, only two of which are publicly known. There have been over 200 additional contributors to the project and software updates are implemented every six months or so. To learn more about Monero including its competitors and challenges, read “What is Monero”. If you’re thinking about investing in Monero, check out our opinion piece “Should You Invest In Monero?“.
#14 – Tether (UDST)
📷 Tether is a cryptocurrency token issued on the Bitcoin blockchain. Each Tether coin is allegedly backed by one US Dollar. The goal is to facilitate transactions with a rate fixed to the USD. Amongst other things, Tether looks to fix some of the legal issues which can arise when trading cryptocurrencies and it aims to protect people from market volatility. Tether has faced controversy regarding their business model, and some consider it a scam. More info can be seen on reddit posts such as this.
#15 – NEM (XEM)
📷 NEM (New Economy Movement) is the world’s first proof-of-importance (POI) enterprise based on blockchain technology. With a focus on business use cases, the software was built from the ground up with adaptability in mind. NEM’s goal is for companies to use their “smart asset system” to implement customizable blockchains. A smart asset can be almost anything: a cryptocurrency token, a business’s stock or a company’s invoicing and records. Some potential use cases for NEM’s technology include: voting, crowdfunding, stock ownership, keeping secure records, loyalty rewards point programs, mobile payments and escrow services. A list of NEM’s use cases can be found here. The development of NEM is monitored by the Singapore-based NEM Foundation. For more information on what NEM does and what sets NEM apart from its competitors, see “What is NEM”.
#16 – VeChain (VEN)
📷 As described in VeChain’s development plan, the organization’s purpose is to build “a trustfree and distributed business ecosystem based on the Blockchain technology self-circulated and expanding”. They plan to do this by creating an efficient trustless business ecosystem to significantly reduce the wasteful information transfer systems of today. Some of the areas and industries the VeChain platform is focusing on include eliminating counterfeiting in the fashion and luxury industry, food safety tracking systems, digitizing maintenance in the car industry and many other global supply chain processes. For more information on VeChain, see their reddit and website. Read “What is Vechain” to learn about the project, and our investment opinion piece “5 Reasons to Invest in Vechain“.
#17 – Ethereum Classic (ETC)
📷 Ethereum Classic came about after a hard fork of Ethereum in 2016. The fork was a result of the infamous DOA hack where around 50 million dollars worth of Ethereum was stolen due to what was considered an oversight in the code. The blockchain was forked in order to recoup the losses from this attack, but a small portion of the community did not wish to go back and change the original blockchain. Vitalik Buterin, founder of Ethereum, and subsequently the development team chose to go with the hard fork and work on what is now “Ethereum” today. There is a lot of ongoing controversy with Ethereum Classic which can be better described on this reddit thread. For an in-depth discussion of Ethereum Classic, see”What is Ethereum Classic“.
#18 – Binance Coin (BNB)
📷 Binance Coin is the coin used to facilitate operations on the Binance platform, a cryptocurrency exchange that is capable of processing 1.4 million orders per second. The name “Binance” is derived from the combination of the terms “binary” and “finance”, referring to the integration of digital technology and finance. The BNB coin is used to pay exchange fees, withdrawal fees, listing fees, and all other possible transaction expenses on the Binance platform. In order to incentivize new users to do their cryptocurrency trading on Binance, the team is offering discounts when BNB is used to pay fees. The discount will be 50% in the first year, 25% in the second, 12.5% in the third, and 6.25% in the fourth year before the discount ends. Binance was primarily marketed to Chinese cryptocurrency investors at first, but they also have English, Korean, Japanese, French, Spanish, and Russian versions of the platform. For a deeper look into Binance, you can read the whitepaper or check out the trading platform here.
#19 – Bytecoin (BCN)
📷 Bytecoindescribes itself as “a private, decentralized cryptocurrency with with open source code that allows everyone to take part in the Bytecoin network development”. It is the first coin to offer untraceable payments, unlinkable transactions and resistance to blockchain analysis. With Bytecoin, it is possible to send instant transactions anywhere around the world, which are totally untraceable and don’t require additional fees. Bytecoin’s development is community-driven and a list of all of the different community websites can be found here. For more information on Bytecoin, see: “What is Bytecoin“.
#20 – QTUM (QTUM)
📷 QTUM (pronounced Quantum) is an open-source value transfer platform which focuses on mobile decentralized apps or Dapps. QTUM is the world’s first proof-of-stake smart contracts platform. QTUM is meant to be used as both a value transfer protocol, like Bitcoin, and a smart contract platform, like Ethereum. They have a number of technical innovations which some consider to make it superior to Ethereum, and they are focusing on mobile applications. The platform itself is very new. It came about in March 2017, after a highly successful crowdfunding campaign raised them nearly 16 million dollars in only 5 days. QTUM has a small but strong development team and an impressive list of investors backing their ideas. QTUM’s development is lead by the Singapore based QTUM Foundation. For further reading on the background of QTUM and what sets them apart, see “What is QTUM”.
#21 – Zcash (ZEC)
📷 ZCash is a value transfer protocol forked off of the Bitcoin blockchain. ZCash can be used like Bitcoin, with a few added improvements. With “zero cash technology”, ZCash shields both the amount transferred and the senders, making transactions truly anonymous. ZCash is one of the new kids on the block in the world of “private transactions”. An interesting note is that Ethereum is in the process of implementing some of ZCash’s technologies to enable transactions on the Ethereum network to be anonymous as well. ZCash is being developed by the Zerocoin Electric Coin Company. They’ve had some great successes, most notably JP Morgan’s announcement that they would implement Zcash’s privacy technology to Quarum, a technology JP built on Ethereum. Interested in investing in ZCash? Here’s the opinion of one of our writers: Should You Invest In ZCash? ZCash was recently featured on the Radiolab episode The Ceremony.
#22 – OmiseGO (OMG)
📷 “Unbank the Banked” is the slogan of Omise’s online platform OmiseGo and that’s exactly what Omise has set out to do. Founded in 2013 off of the Ethereum blockchain, Omise aims to revolutionize the financial dynamics in Southeast Asia. Omise is targeting individuals and businesses of all sizes by improving the current financial system which is slow, outdated, and inaccessible to most “everyday” people in these countries. With their planned online exchange OmiseGO, Omise seeks to speed up the way money is spent and sent, both domestically and internationally in Southeast Asia and beyond. They have a lot to celebrate too. OmiseGo has been building partnerships in the region and recently partnered with McDonald’s and Credit Saison. Omise has established a strong team of over 130 staff members located in different countries. CEO and founder of Omise, Jun Hasegawa, has been involved in multiple startups and worked for Google for over 16 years. The OmiseGO platform has been endorsed by some of the heavy hitters in the cryptocurrency world such as Vitalik Buterin and Gavin Wood, the co-founders of Ethereum. For more information on what OmiseGO aims to do, see “What is OmiseGo”.
#23 – ICON (ICX)
📷 Fresh off a successful ICO, the Korea-based startup ICON is looking to provide a medium to connect all the different blockchains together. This puts ICON in the same field as Ark, which is attempting to accomplish similar goals. The main concept of ICON is their idea of a “loopchain”. As stated in their whitepaper, a loopchain can be described as a “high-performance blockchain that can provide real-time transaction, which is based on enhanced Smart Contract.” Through ICON, participants will be able to connect to any blockchain without relying on the current centralized exchanges. ICON has a relatively large team from various backgrounds. They have also secured the help of a few notable advisors such as Jason Best and Don Tapscott. For more information on ICON and the work they’re doing, see “What is ICON“.
#24 – Lisk (LSK)
📷 Lisk is a decentralized network, like Bitcoin and Litecoin, which enables developers to deploy their own side chains off the main Lisk blockchain. These side chains are fully customizable blockchains which enable you to change the parameters you want to fit your own blockchain application. This is similar to Ethereum and QTUM in some ways. With Lisk, the main difference is that the customizable blockchains split into their own separate side chains. This saves developers the grueling legwork of designing something from scratch. At the end of the day, side chains are only decentralized databases of blockchain applications. Lisk is being developed by a small but quickly growing Berlin-based team. They are led by co-founders Max Kordek and Olivier Beddows who are veterans in the cryptocurrency and development world. For a thorough look into Lisk including more on what Lisk does, its competitors, challenges and teams, see “What is Lisk”. You can also check out our case study of an accountant who invested all his life savings in Lisk: “Accountant Invests All in Lisk”.
#25 – Zilliqa – (ZIL)
📷 Zilliqa is a blockchain platform which focuses on solving the problem of scaling on public blockchains. With Zilliqa’s network, the number of transactions increases at a linear rate to the number of nodes. This means that as nodes increase, so will its ability to handle high transaction volume. Zilliqa has already run a successfultest on their network, where they were able to achieve 1,200 transactions per second with only 2,400 nodes. Zilliqa also is the first blockchain to successfully integrate “sharding” into a public blockchain. This concept is extremely useful in improving the rate of scalability, bandwidth and performance in blockchains. Sharding, in effect, splits nodes into “shards” which can then conduct micro-transactions in each blockchain block. In addition to this, Zilliqa claims to be more energy-efficient to mine. They also plan to implement dapps into their platform in the future. For more information on Zilliqa, see their website and reddit. Our article “What is Zilliqa” can provide you with an overview of the project.
Bitcoin transaction fees are a fundamental part of the Bitcoin network, but they can be a little confusing for newcomers to the space.In this guide, we will cover everything you need to know about Bitcoin transaction fees and give you the tools to start making Bitcoin transactions today. Predicting bitcoin fees for transactions. Fees are displayed in Satoshis/byte of data. Miners usually include transactions with the highest fees first. Micropayments. There’s a minimum amount of Bitcoin you can send in a transaction – approximately 0.00000546 BTC. At the time of writing, that’s equal to about four cents. It’s a small amount, but the Lightning Network allows you to push the limits to transact the smallest unit currently available – 0.00000001 BTC, or one satoshi. Typically, a transaction of 236 bytes or less costs the sender around $0.001 to $0.008 on the Bitcoin Cash blockchain. Fees were a touch higher during a three month period (December 2017, January ... The Bitcoin network is approaching its billionth dollar charged in cumulative transaction fees—a threshold due to be broken nearly 10 years after the creation of the original cryptocurrency.. The revelation came in a tweet Tuesday by Nic Carter, who expects the network will surpass $1 billion in total cumulative fees this fall based on data obtained from CoinMetrics Network Data Pro. From April through early November, Bosworth said, blog participants have processed nearly 20,000 invoices with the Lightning Network, a bitcoin scaling solution that makes micropayments feasible by keeping them off the blockchain, sidestepping network transaction fees.
How to avoid commission, transaction fees and how to deposit to Binance
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