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Re-Launching The Borderless, Unkillable Crypto-Fiat Gateway, DAIHard. Enter or Exit Crypto via Any Fiat and Any Payment Method, Anywhere in the World, Without KYC. All you need is a little Dai.
Some of you might recall recall our initial facepalm failed launch about 3 months ago (post-mortem here). Well, we're back--this time with an audit and some new features. This version of DAIHard should should die a little harder this time ;)
After shopping around a bit in the auditor space, we decided to go with Adam Dossa--the very same Adam Dossa that actually found our launch vulnerability and responsibly disclosed it to us! You can see his report here. By the way, Adam has been a gem: friendly, professional, timely, and flexible. Definitely keep him in mind if you need an audit!
Following is an updated version of our original launch post. If you've already read that, you might want to skip to the heading What's New in v0.9.2. Or you can go straight to the app or go to our info site for more info! Here is a legitimate concern most of us are familiar with:
To enter or exit the crypto economy, we rely on centralized exchanges such as Coinbase, which track their users, impose limits, and are tightly coupled to their jurisdiction and its banking system. And for all we know, any day now regulations could start tightening these controls further (*we've actually seen some of this play out in the two months since our first launch post). In light of this, can we say in any meaningful sense that crypto is anonymous, limtiless, borderless, immune to regulation, and (most importantly) unstoppable?
To really address this concern, we need a completely decentralized gateway between fiat and crypto: something that extends the benefits of crypto to the very act of moving between the old and new economies. But the design of such a platform is far from obvious. (Localethereum comes close, but as discussed under Unkillable, it doesn't quite cut it. And Bisq is decentralized, but has significant UX hurdles.) We believe we've found a solution. We are proud to present:
DAIHard v0.9.2 - Almost Definitely Not Broken This Time
If you want to jump right in, we recommend first watching our latest usage demo (7 min), then diving in and giving it a shot with a small amount of Dai. (Try it on Kovan first if mainnet is too scary!) DAIHard extends many of the promises of crypto (borderless, anonymous, limitless, unstoppable) into the exchange mechanism itself, allowing anyone, anywhere to bypass centralized exchanges and the control they impose. More concretely, DAIHard is a platform, run on smart contracts, for forming one-off crypto/fiat exchanges with other users, in which:
The method of fiat transfer is open-ended, but agreed upon up-front (for example: bank transfer, cash handoff, transfer of online credit, cash drop...).
You and the counterparty can communicate via end-to-end encrypted chat to coordinate the fiat transfer (i.e. communicate bank account number or reveal a cash drop location).
Crucially, in the last phase, the Seller can choose to burn the Dai instead of releasing it to the Buyer (but he can't get it back). This credible threat of burn is what makes the platform reliable in the absence of a centralized group of arbitrators or moderators. For more on this see the DAIHard Game Theory medium article (10 min read).
You Need either xDai, or both Dai and Ether, to Use The Tool (At Least For Now)
If you want to buy Dai on DAIHard, you must already have Dai--1/3 of the amount you want to purchase--to put up as a burnable deposit. For example, if you only have 10 Dai now, you can only commit to buying 30 Dai, and must complete that trade before using the newly bought Dai to open up a bigger offer (for up to 120 Dai that time). Most tragically of course, this means that if you don't already have some crypto, you can't use this tool to get crypto--this is why we avoid calling DAIHard an onramp specifically. This comes from the fact that both parties must have "skin in the game" for the game theory to work, and a smart contract can only threaten to burn crypto. We have some ideas on how to address this drawback in the not-too-distant future, which we'll write about soon. For now it's time to launch this thing and get some users!
Dangerous and Scary To Use
In rare cases, a user may have to burn Dai and face a loss on the entire trade amount. The necessity of this ever-present risk is explained in detail in DAIHard Game Theory. However, a cautious, rational user can gather information (possibly via our [subreddit](daihard)!) about how people have used the tool, successfully and unsuccessfully. They can then create a buy or sell offer with wisely chosen settings based on what has worked for others. Other cautious, rational users can find this offer and commit to the trade if they dare. We expect the vast majority of committed trades should involve rational, cautious users, and should therefore resolve happily. Still, inevitably there will be sloppy trades that result in burns. As the tool is used, we'll be keeping a close eye on the frequency of burns and keeping you guys updated (perhaps via a "System Status" utility similar to the one found on MakerDao's explorer). In the end, though, we expect the risk in using DAIHard to be comparable to the risk of using any exchange or DNM: ever-present but low enough for the platform to be useful as whole. So, while DAIHard will never shut down and can't perform an exit scam, the bad news is it's not risk-free. Users will have to approach DAIhard with the same level of caution they would with any new exchange (albeit for different reasons and with a different approach). So what's the good news?
The Good News
While these drawbacks are significant, they enable some remarkable features that no other crypto/fiat exchange mechanism can boast.
(Correction: Bisq seems to have a decentralized arbitration system) We are aware of no other crypto/fiat exchange platform that is truly unkillable. Bisq and localethereum comes close, but both localethereum relies on centralized processes of arbitration. This means their fraud-and-scam-prevention system can be sued, jailed, or otherwise harrassed--and if that part stops working, it doesn't matter how decentralized the rest of the system was. DAIHard, in contrast, gives the users the power to police and punish each other, via the aforementioned credible threat of burn. This is simple game theory, and the rules of this game are etched permanently into the DAIHard Factory and Trade contract code: impervious to litigation, regulation, and political pressure. This Factory contract has no owner and no suicide or pause code. It cannot be stopped by us or anyone else. Like Toastycoin, this thing was immortal the moment it was deployed (even more immortal than RadarRelay, for example, which does rely on an ownership role). Both DAIHard and Toastycoin (and probably whatever we build next) will last for as long as a single Ethereum node continues mining, and it will remain easy to use as long as someone can find the HTML/JS front-end and a web3 wallet. (The HTML/JS front-end (built in Elm, by the way, with the lovely elm-ethereum!) is currently hosted on Github pages, which is centralized--but even if Github takes down the page and deletes the code, it's a minor step to get the page hosted on IPFS, something that is on our near-term roadmap in any case)
No KYC, No Limits
It's smart contracts all the way down, so DAIHard never asks any nosy questions--if you have Metamask or some other web3 wallet installed and set up, with some ETH and Dai (or just xDai), you can immediately open or commit to a trade. You don't even need a username! (In fact, we're so inclusive, even machines are allowed--no CAPTCHA here!) You're limited only by the collateral you put up, so if you have 10,000 Dai you could open up a buy offer for 30,000 Dai (or a sell offer for 10,000 Dai) right now. We do reccommend trying the tool out first with a small amount of Dai... But we're not your mom! Do what you want!
It simply doesn't matter where you are, because DAIHard doesn't need to interface with any particular jurisdiction or payment system to work. DIAHard works by incentivizing people (or robots?) to navigate the particular real-world hurdles of bank transfers, cash drops, or other fiat transfer methods. These incentives work whether you're in America, Zimbabwe, or the Atlantic; they work whether the fiat is USD, EUR, ZAR, seashells, or Rai Stones; and they work whether your counterparty is a human, an organization, a script, or a particularly intelligent dog with Internet access.
Any Fiat Type, and Highly Customizeable
Here are some examples of the types of trades you might create or find on DAIHard.
Sell 5 xDai for $5 USD, sent via TransferWise.
Sell 200 Dai for $180 USD, granted they bring the cash to you by tomorrow afternoon in Central Park, NYC.
Buy 20 Dai with a $30 gift card for Amazon AWS that you were never going to use.
Sell 20 Dai in exchange for a $20 Steam game.
While in Vietnam, sell 200 Dai to someone for €180 anytime in the next two weeks, provided they deposit it into your German bank account.
While in Germany, sell 20 Dai to someone in exchange for them refilling your pre-paid Vietnamese phone plan.
Buy 500 Dai for $550 via PayPal, but wait 3 weeks for before the Dai is released (so the paypal transaction can't be reversed).
As the DAIHard community grows, users will doubtless find much more creative ways to use the system, and we will discover together which types of trades are reliable and which are more risky. Because users can set their own prices and phase timeout settings, we expect the risky trades to charge a premium or have longer time windows, while the reliable ones rapidly multiply at close to a 1:1 price ratio, with quick turnaround times.
Extensible (with profit) by Third Parties
Not satisfied with our interface? Do you have some nifty idea for how to display and organize user reputation? Or maybe some idea for how trades could be chained togeher? Maybe you'd like to design a notification system for DAIHard? Maybe you just want a different color scheme! Well, you won't need our permission to do any of this. Any tool that watches the same Factory contract will share the pool of trades, regardless of which tool actually creates the trade. This means we don't even have to fight over network effects! And if you look closely at our fee structure, you might notice that only half of the 1% DAIHard fee is "hardcoded" into the Factory contract. The other half is set and charged by our interface. What does this mean for you? If you go out and make a better interface, you can essentially replace half of our 1% fee with your own fee--it's up to you whether it's smaller or larger than the replaced 0.5%. The reason for this is to explicitly welcome other developers to extend what we've built. For as long as our team is the only one improving the platform, a threat to us is a threat to future upgrades. But if others begin extending the DAIHard platform too, then DAIHard will not only be unstoppable as it is today, but also grow unstoppably.
(For Real This Time) This Is a Big Fucking Deal
DAIHard is a turning point in crypto and a breakthrough in decentralized markets, and is an irreversible augmentation of the Ethereum platform. What we've built is a gateway to crypto completely devoid of centralized components--rendering entry and exit to crypto unkillable, flexible, borderless, and private. Centralized exchanges, and the control they impose, can now be bypassed by anyone with Dai and a web3 wallet.
What's New in v0.9.2
There have been many changes made since our first failed launch, but there are two rather important ones: xDai support and reputation tools.
DAIHard is now operational on xDai, a sidechain whose native token (xDai) is pegged to the Dai (and therefore $1). Add the xDai network to your Metamask (or just install Nifty Wallet), then switch to the xDai network in your wallet, to try it out. xDai has some pretty incredible benefits, compared to vanilla Ethereum:
Price: On xDai, a single DAIHard trade costs on the order of $0.01 to run start-to-finish, rather than the accumulated $2.40 (with the best-case-scenario 1gwei gas price) you'll spend on vanilla Ethereum.
Speed: Trade actions mine much faster, and don't require ERC20 'approve' transactions, making the whole process way snappier.
Gas priced in xDai: the main benefit here is that you only need one token (xDai) rather than two (Dai and Eth). Also, it's just nice having the gas cost expressed in (essentially) USD!
We now have a few reputation tools. First, on any open trade, there is a widget showing the number of releases, aborts, and burns the given address has been involved in as that role (buyer or seller). Clicking on this expands the widget to show more detailed information, and also provides a link to a page that lists each trade this user has been or is involved in.
We have tons of ideas on how to improve the product--too many, in fact, to commit to any before we get a good chunk of user feedback. Here are some of our favorite ideas:
A "QuickTrade" page, offering Trade Templates as an alternative to the current Create Offer page.
Big Exciting Features
Bootstrapping people with no DAI via other mechanisms and community outreach.
Partial commits to trades. eg. Place a 10,000 DAI trade and allow it to be picked up in blocks larger than 500 DAI at a time.
More chains, get this thing working on Bitcoin via Rootstock, on Ethereum Classic and Binance Chain.
A lot of the above features will be prioritized more clearly as we get user feedback, and we will be posting fairly frequent updates and articles on our info site. If you don't want to miss anything, note the subscribe widget and sign up!
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.
The Convoluted Story of Crypto and Coronavirus (Article; Not a piece of investment advice; Not meant to spread FUD)
Hey, all! The sole purpose of this post is to give an outline of the things happening in crypto during the outbreak of Corona. The article is meant to share information and doesn't support any coin and is not meant to instigate FUD in the community. Please comment your thoughts below and it helps us in delivering better content. Thanks in advance.
The Convoluted Story of Crypto and Coronavirus
The recent Coronavirus outbreak in China has brought businesses to a standstill. It cost hundreds of lives and sent shockwaves to the entire world. On the other hand, the cryptocurrency market witnessed huge gains in early February and took a nose-dive in the last week. These series of events does bug everybody if the epidemic is impacting crypto. In this short post, ChangeHero will reveal what is happening to crypto amid this epidemic. https://preview.redd.it/goqdtfslk9k41.jpg?width=1901&format=pjpg&auto=webp&s=dd48e4f3629ec813f1cd3e2d5700470ab1e329e4 The Outbreak According to the World Health Organization Coronovirus disease (COVID-19), was first reported in Wuhan, China on 31 December 2019. A Bloomberg report suggests that there are 82,302 confirmed cases and 2,802 deaths worldwide, but China has been the most affected. In measures to contain the spread, the Chinese government has locked down cities and restricted the free movement of people which made the factories and businesses to shut the doors. The steep in the factory output has taken a toll on the Chinese economy and also threatened the global economy. Industries such as manufacturing, oil and gas, tourism and supply chain suffered the most. In the same vein, crypto is also not immune to this virus. Miners hammered China has a history of crackdowns on cryptocurrencies and exchanges. On the contrary, they are spearheading the blockchain adoption race and working towards digital currency, quickly go through this article for more info about China and cryptocurrencies. Moreover, the top five mining companies — AntPool, BTC.com, BTC.top, F2 Pool and ViaBTC are based in China. These firms control almost 60% of the hash power in the Bitcoin network. Mining farms are the first to be affected by the outbreak and a few representatives of these firms expressed their concerns on Social Media. Many stated that the government has cut off the electricity, supplies and also drove away workers from mining facilities. It reflected in the difficulty of bitcoin mining, a measure which indicates the effort required to solve the math in finding the block. This measure is adjusted once every two weeks and in the last difficulty correction, the measure rose only by 0.52% which is significantly lesser than the previous corrections of 4.67 and 7.08. Mining may soon turn out to be a not so profitable activity, credits to the Bitcoin Halving. Bitcoin will undergo its third halving event somewhere around May and the block reward will be slashed to 6.25 BTC. It leads to tougher and unfavourable economic conditions. To boost their chances of surviving, miners are gearing up with advanced machines. Yet again, China is one of the largest suppliers of the mining equipment. Coronavirus outbreak has also locked up the doors of the factories and the companies have postponed the deliveries. Although there is a significant impact on the crypto mining industry in China, Bitcoin hash rate has seen a negligible change. Community reflex To restrain the spread of the virus, the Chinese government has halted the distribution of Yuan worth almost a Billion Dollars. Meanwhile, the S&P 500 Index and other traditional markets have also recorded their worst performances due to the epidemic. Crypto community was quick to react and hinted that digital currency can fix this. Big names in the crypto sphere like Binance and Tron have also pledged support to the coronavirus victims. Moreover, the epidemic has spread a sense of terror amongst the community and led to the cancellation and postponing of the conferences and public events. Amidst the crisis, CoronaCoin, an ERC-20 token was launched with the ticker NCOV. Though the website states that the token is meant for charity, it’s approach has shocked the crypto community. The cryptocurrency has a total supply equal to the world’s population and the tokens will be burnt every 48 hours, proportionate to the number of casualties. The concept of investors benefitting with the spread of the virus poses serious moral questions on this project. Impact on the crypto Bitcoin kickstarted the new decade with a massive bull run and crossed the ten thousand dollar mark in early February. Many have contributed this to the upcoming halving and some connected it to the coronavirus outbreak. Things didn’t fare well long for crypto and the whole market crashed and lost a whopping 50 Billion Dollars in the last week of February. The epidemic has indeed affected the people and processes behind the crypto industry but it is still unclear if there is a correlation between the coronavirus and the crypto market prices. Nevertheless, the notion of Bitcoin as a safe haven during the crisis still exists but hasn’t been proven yet, at least for now. We hope the crisis will end soon and peace be restored. Until then, all our strength to the effected, families and businesses around. Upvote if you have liked the article and comment to spark a discussion. Follow ChangeHero for more of such articles and updates in crypto. The article was originally published on our Medium profile and reposting it here for more reach. Thanks for understanding.
How and why on earth did cryptocurrency become what is is today and should we seriously do something aboout it?
My first thought is - rather fittingly - the genesis block of BTC. Specifically the message: The Times 03/Jan/2009 Chancellor on brink of second bailout for banks Today, over 10 years later, this kind of message might as well read: Coindesk(dot)com xx/xx/2019 Crypto whales and miners on the brink of a second bailout for cryptocurrency exchanges Bitfinex being perhaps the most iconic example. Losing 850 million USD just like that thanks to transnational government agencies, they faced a similar fate as banks in the housing crisis. Total wipe-out. Just like banks, these monolithic exchanges are too big to fail. Failure would mean a global financial crisis in crypto, much like mt.gox. Not that different from the banks that got bailed out by institutions, Bitfinex received the same treatment, except from whales, investment funds, rich corporate entities and such. They covered for the whole loss basically, allowing things to keep operational at least. There wasn't really any demand for another tether, so without it, it could have been an economic meltdown in crypto. Hearing about similar offers made by other rich entities operating in the crypto scene to Binance after their hack, I'm starting to think this has become an even bigger, more common thing with crypto exchanges than it has been with banks. It's rich people in positions of power protecting their own interests, except that in the proper spirit of crypto, it's quite secretive, likely (pseudo)anonymous and way less transparent than what the central banks did. Due to the nature of this technology, it can be hard to grasp what the actions taken by Bitfinex mean. To my understanding, they minted a new coin, LEO (witty name for a token under these circumstances..) and basically just decided it's market cap is 1 billion, then in a private sale, managed to somehow pull off the biggest ever ICO in the history of crypto, 1 billion of funding in just 10 days for what appears to me as basically printing money in order to cover for accounting, as this exclusive club taking part in the sale of LEO committed into buying said tokens using the money Bitfinex previously printed in order to manipulate the markets and profit, USDT that is. Can't remember any ICO in the past where the minimum barrier for an individual to participate was 1 million dollars and for companies, groups, or funds 100+ million. We traded the tyranny of the banking system for a system that eventually reached centralization of power to a much greater degree, accompanied with lack of regulation and oversight which we all welcomed. I have observed and participated in the scene for at least 9 years, so almost from the very beginning, seeing the rise of first altcoins for example and all the crazy phenomena which emerged and how the community dealt with them, evolving in the process. There has been a distinct pattern that can be traced back to these early days, where some group of people would figure out how to use this new technology in all kinds of creative ways which under normal circumstances would have been considered fraud, collusion... all kind of things we did NOT want. So when the majority aka victims became aware, we always protested accordingly. Pre-mined cloned coins that were hyped over social media only so the creators would profit? We decided they were worthless. So these people, having a very lucrative way of essentially scamming people dreaming of moons came up with a solution: there will be no pre-mine, but coins were launched under the radar and only people with power (many BTC) were informed. In case you aren't familiar, when a new minable coin is released and there's only a handful of miners, a significant portion of the tokens in circulation are mined in an insanely fast manner, first 10% of total supply generated in a matter of hours perhaps, giving everyone who managed to mine on the day of launch a major advantage. We decided the secrecy was equally bad and they openly announced these coins, directing masses to use mining pools, only for them to be be under DDOS during the launch. That pattern eventually evolved to ICO's and everything else we see today. Ripping people off in sophisticated enough ways that we put up with it. After all, we could always get lucky from the 'generous' pump & dump groups they were organizing and offering to us. The system may have changed, but the philosophy is the same: people with the most money either as individuals or a group exploiting 'lesser' people and groups, concentrating power (BTC) in the process much akin to 'rich get richer while poor get poorer'. 10 years onwards, thanks to the financial side (trading), the whole crypto economy is still not only using but dependent on market manipulation and all kinds of deceiving schemes. This has been a major obstacle to wide-scale adoption, despite powerful people trying to convince us that manipulating prices to the level of a bubble will lead to people thinking this technology is great and start using it. In reality, many among the general population either had or started having doubts about these bitcoins. Imagine if they tried to sell internet and all of it's possibilities solely through nigerian prince scam spam. Then there's the miners, one of if not the most powerful entity in cryptoscene as a whole. Naturally their power and influence only grew, significant investments were made. I remember conversations with some chinese guy mining LTC back in 2014, he was always like "Yay, the newest shipment of 300 AMD GPU's came straight out the factory". Must have had thousands. Asics had begun dominating BTC mining and they weren't cheap either. Not to mention all that electricity too. Where I'm leading you with this, is the current situation where we have established mining companies with ASICs dedicated solely to BTC mining for efficiency, probably pretty much useless for anything else. Valuations of 100's of millions if not billions at their peak. Then we realized how stupid it is to waste electricity like that when we could do it in a better way, Proof-of-Stake. Instant conflict of interest hindering further innovation due to competition instead of the opposite. The mining giants refuse to go out quietly and many have been mining BTC at a loss (electricity) for a long time now, effectively needing a pump to dump those mined BTC just to cover their operating costs in the past as they naturally didn't want to sell them at a loss. Side-note: I think the current pump is due to a lot of BTC miners quitting and cashing out of BTC in a way that doesn't bankrupt them. To make matters force, they can effectively coerce both whales and crypto exchanges to co-operate in order to pump the prices because if the miners go out of business, everyone utilizing BTC for profit is in big trouble. So if they say they need a pump to dump, they get one. Bail-outs for miners too for christ sake. Luckily, we have alternatives being heavily developed, but I fear for a financial meltdown for crypto before they reach a mature stage. Not a very popular subject to my knowledge, because in the near future, somebody has to pay the bill and this time it ain't covered by taxes collected. This awesome technology has been primarily abused and exploited, with people innovating in the are of 'get-rich-quick' schemes more than the technology itself. Ethereum was supposed to be a paradigm shift, but it became another instrument of the same scheme, even though it helped push tech forward some. Remember that this is a time of decentralization. It's up to us, the collective, to do something about this if we want (or even can for that matter). Ironically, we stuck with the old mindset of 'just wait it out and The Man will fix it for us eventually' which was supposedly a thing of the past. So I ask you: What are your opinions about the current state of affairs in crypto, especially the financial side? Do you feel it's all good and if so, why? Any and all input is welcome. Let's make the scene a better place and show good example to the pagans who doubt us due to our dubious practices in the past and even today, furthering acceptance and adoption instead of laser-point focus on profit to the point the system collapses.
WARNING: This is an personal, unofficial translation offered as a rough summary of the video, so please don't take my words as the gospel. I'm not a professional translator, just an emigrated Chinese. Please reserve your judgement until the official translation comes out. A VERY brief personal translation of the video from Chinese only side, sorry if it's badly translated: Intro: CEO introduces himself and his connection to South Korea (bachelors and research professor). Now started WTC in China, have 15 years of experience in chip research. He found out bitcoin by chance in 2013 during his stay in SK; one of his mates was mining BTC, which quipped his interest in crypto and the tech and researched further. Later on he participated in an IoT conference and saw the potential of integrating blockchain tech with the physical world use. Gives an overview of what WTC does; connects RFID to blockchain so that the supply chain system is transparent, can take on larger quantities, faster, giving it better data management and integrity. Cue the the boxmining video. Offices: Their main office is in Shen Zhen, with another one in Xia Men and Cheng Zhou. The main office is in charge of the RFID chips, Xia Men does the systems, Cheng Zhou is doing the marketing/promo, because Cheng Zhou area has China's highest number of textile/clothing manufacturing companies. 30 people in main office, 30 in IoT, 10 in other offices. ICO History: Talks about the stats of the ICO, when it was, how long the duration, how many coins, etc. Talks about their presence in South Korea and the community in South Korea Telegram (60k). Initial SK to Chinese participants for the ICO ratio was very small. The future: Just finished their testing last month, went excellent. Currently doing the 2nd testnet now (finishes end of Dec). If something goes wrong, going to do a 3rd testnet Q1 next year. If everything is fine, going to skip the 3rd testnet. Goals in South Korea: Just went to NIDS company and wish to use their technology in Xia Men smart city to monitor environmental changes (particulate matter 2.5, particulate matter 50). Because environmental QA requires data integrity to make sure the data's true, combining NIDS's data collecting tech with WTC's blockchain integrity. Also promoting the RFID chip to SK's clothing industry. Starting at 31:41, he talks about NIDS and integrating their techs together. There were technical and electrical engineering terms in this part that I don't understand, so didn't translate. If anyone knows, would be much appreciated. Expectations of WTC value: Based on their market, competition, technology and team, etc, he expects them to be a top 10 cryptocurrency. Interesting note here: The current RFIDs can only read data. WTC have applied for a patent (only applied, not definite) to combine RFID with a memory (memory chip?*), so that it can transmit a TXID. This means when you read the RFID chip, you also read the TXID. Not only can the chip tell you the TXID, but it can store the next/new TXID. Other programs, such as the green frog, is doing similar things, but WTC has the patent to this RFID + memory of TXIDs. The biggest difference between WTC and these other RFIDs, according to him, is that WTC owns (has patent) of the hardware, whereas others only the software. Goes onto mention that the average investor might not understand the implications of this hardware advantage. In essence, WTC is making a brand new sort of RFID, one that has memory and can output/input TXIDs. With each input of a new TXID into the RFID, the data is stored onto the software, so you can go and pull out the entire TXID/journey of the product as it moves along the supply chain. This hardware tech alone is why WTC should become a top 10 coin, and expects it to be a top 5. Vision: The vision for WTC is more than tracking supply chains and data integrity. Once the technology and data integrity is proven, they aspire to use the data for analytics/research. WTC's vision is for a fair, safe, and transparent supply chain and market. They talk about a recent news feature on Chinese TV where mobile phones sold in America were China-made counterfeits and no one outside of the counterfeit factory was non-the-wiser. (WTC can counter international counterfeit). On Nodes, PoW & PoS, and max coin supply: Their RFID is strong enough to mine either Dash(not sure if heard right), or mine WTC. Uses both PoW and PoS. The PoS is there to assist PoW in difficulty of mining. 30mil WTC coins for PoW. 20mil for industry promotion/awareness, 10mil for the team, start to be gradually let out after two years. The last 10mil was initially planned for a 2nd ICO, but that's scrapped. They'll be figuring out how to use this in the future. On international markets/exchanges: Available in OKEX, HITBTC, Binance, chatting with Houbi, Bittrex, Polonex. Possible to counterfeit a RFID: As each chip stores TXID, unless you can counterfeit TXIDs onto an RFID, virtually impossible. How it works: A WTC client is given the chips and a reader specifically for that store and that store's location. This reader reads an RFID and inputs the TXID exclusive to that store. So even if you replicate the chip, you still need to replicate the reader so to enter the unique TXID of that part of the supply chain process. The reader's owner owns the private key, so the only person who can counterfeit/manipulate the TXID data would be the client who owns the reader. Any South Korea partners?: NIDS is the first one, they are assisting in looking for more possible partners with WTC.
Diversifying your 2018 investment portfolio with high risk and low risk coins
After months of thorough research I put together the best portfolio in crypto in my opinion. The portfolio is divided into high risk, high return (100x) bets, medium risk medium return (10x) and low risk, low return (3x-10x). If you want to put $30k into crypto, here is what I recommend to get the best outcome.
1. $10k into high risk high return coins XSPEC, SUMO, ECC, ODN, BNTY, SNOV.
XSPEC and SUMO are 2 are privacy coins that are currently at a tiny market cap of $9M and $4M. 3 months ago, when Bitcoin was at its All-time-high, their market caps were at $113M and $32M respectively. In case, Bitcoin goes up to its ATH of $20,000 again, those 2 coins will go back to their ATH again, too. The thing is, altcoins behave the same as Bitcoin, only that they move at a much higher percentage than the big one, Bitcoin. For example, if Bitcoin goes up 30%, all small altcoins with a market cap under $10M, such as XSPEC, will go up by around 90%. Privacy coins such as Monero are one of the most sought after cryptocurrencies currently and experts expect a big rise of privacy coins 2018. XSPEC and SUMO are very similar in technology to Monero, maybe even superior though their market cap is 100 times less, since they are less than 1 year old. ODN, BNTY and SNOV are the small market cap coins with the biggest expected commercial use of the blockchain as a messenger (ODN), Bug-Bounty platform (BNTY), lead-generation (SNOV) and decentralized file storage (ECC). There already exists a file storage coin Siacoin at 20x the market cap of ECC without much reason for the big gap due to ECC's solid technology. There are a also a few more very small cap coins that I considered, such as DNA in the medical field, and ELIX, though I found their potential less convincing than that of the above mentioned cryptocurrencies.
2. $15k into medium risk medium return (10x) coins, COSS, POE, PRL, DBC, ENJ.
COSS is the platform coin of the COSS crypto exchange. It is an exchange like Binance, but it is seen as one of the best small and innovative exchanges that currently exist. They will also release their mainnet in a few weeks, which will give them another boost. DBC is one of the few cryptos that make use of artificial intelligence. They have a very strong team and are one of the few cryptos in the AI space. ENJ, this is probably the coin with the most real-world usage of all cryptos. There are already a few gaming coins out there, such as FUN and MobileGo, however, ENJ is one of the few that real numbers behind them. With more than 18 million users and 250,000 gaming-based communities, **Enjin* is among the world’s largest social gaming platforms. Recently, Enjin launched its cryptocurrency—Enjin coin—an Ethereum-based token to be used on a platform that allows for the development, distribution, organization, and trading of virtual goods. As of 2 weeks ago, they closed a partnerships with one of the biggest games, Minecraft and will be used as a currency within Minecraft. POE is a decentralized platform that allows publishers to license, identify, and monetize digital content such as blog posts, news articles, YouTube videos, audio/music, e-books and more. Here is a very good article about them. https://www.reddit.com/CryptoCurrency/comments/7oubqm/my_thoughts_on_poe_and_why_2018_could_be_big_fo PRL is a very interesting one. It gives website owners the ability to generate revenue from their visitors without having to feature pushy advertising by storing encrypted data, but by mining PRL. https://www.reddit.com/CryptoCurrency/comments/7t4o95/oyster_prl_is_going_to_change_the_internet_heres/
Ok let's get to the juggernauts. If you are rather conservative, Bitcoin and Ethereum will make you a good profit in the coming years, maybe even 10x if you're lucky. However, if Bitcoin goes 10x, all smaller altcoins go 100x, so it is worth diversifying a little. The thing is, Bitcoin's technology is very outdated. It cannot handle more than 20 transactions per second, it uses as much energy as a small country and with increased usage their fees will skyrocket again. This is the problem of 1st generation blockchains. Bitcoin cash has the same problem and while they can handle double as many transactions as Bitcoin due to their block size being twice as big, it's only a drop in the ocean, since they need to be able to handle 1000x as many transactions as now if they want to be used as a payment processor. A good comparison to get an idea for transaction volume is VISA, which handles a couple of thousand transactions per second and is able to handle 60,000 transactions /second at peak times. A crypto payment processor needs to be as good as that. However, 60,000 transactions (tx)/second isn’t even a good benchmark. It’s the same as comparing the number of faxes sent with the number of emails sent. If you want to surpass old technology, you should go for 100x the amount of usage. More on that in the paragraph about IOTA. I personally won't put anything in Bitcoin and Ether, because they are rather outdated cryptocurrencies now and they can only grow another 10x maximum within the next year or 2, while there are many other coins that can grow 100x or more within the same time frame. Now we have VeChain, a supply chain cryptotechnology. VeChain is already very mature and it is the most popular and loved altcoin next to Nano. It is a safe bet. Let’s get to IOTA. They have built a very exciting new technology. They are not using a blockchain, but a Tangle. It is a 3rd generation blockchain that has zero fees and instant transaction times. IOTA’s real world application is in IoT, Internet of Things. They are using their tangle to connect to and make transactions between millions of small devices, be it temperature regulator, heating, car, lights. Now you can see why a high transaction volume is so important, because these devices communicate multiple times every second with one another through these transactions. It is estimated that in 10 years time, 80 billion IoT devices will exist worldwide, which probably create 80 billion tx/second or more. IOTA is designed to do exactly that. Bitcoin can only do 10 tx/second. Currently, 8 billion IoT devices are connected to the internet. However, IOTA has not been stress tested at this volume. It is not yet clear that transactions will remain instant at this volume, nor is it clear if the Internet of Things will ever take off. Maybe there will only be 500 million Internet of Things devices ever, this is not sure. However, IOTA has the biggest potential for me. Let’s get to BNB. BNB has the same purpose as COSS. It is used on the Binance exchange to reduce your trading fees. That means, the value of BNB rises and falls with the success of Binance and Binance is now the second largest, most loved exchange. They currently process 10% of all crypto trades. Among the sea of scammy and unprofessional exchanges, Binance stands out as very professional, intelligent, fair, with excellent customer service. They will also soon release the first decentralized CryptoCurrency exchange in a month. I believe BNB will be among the top 10 cryptocurrencies within 1 year. Let’s get to the final one Nano. It is my personal overall favourite. It is what Bitcoin always wanted to be, only a lot better. While Bitcoin is still struggling with high energy use, extremely low transaction volume and high fees upon increased usage, Nano has all that figured out already. Similar to IOTA, they are also a 3rd generation blockchain technology. They have zero fees, instant transactions and one millionth the energy usage of Bitcoin. Furthermore, they have been proven to work flawlessly while maintaining a 1000 tx/second volume. They are a payment processor. Furthermore, it looks like Nano could replace BCH as a trading pair soon, since BCH trading pairs get little traffic, KuCoin has removed BCH trading pairs yesterday and there is already an exchange with that trades all of his currencies with Nano, called Nanex. All in all, NANO and IOTA are on par for me while IOTA has more potential but also more risk, since it still has some security issues that haven’t been ironed out yet and they are somewhat reliant on the success of the Internet of Things. However, if the internet of things, really permeates our lives as described above, IOTA will replace Bitcoin and become the one most used cryptocurrency. Here is an excellent article about IOTA vs. Nano https://hackernoon.com/iota-vs-raiblocks-413679bb4c3e
Having said all this, if you believe that Bitcoin has now reached its full potential already and will never ever be worth more than now, don't invest in crypto anymore. If you think that Bitcoin can potentially go to $20k again or to $40k or that cryptocurrencies will replace FIAT in 5 years, then you can look at 10x returns. Many people fall victim to the cognitive bias of thinking Bitcoin is too risky, while the maximum risk is losing everything they invested, which can be $2,000. Sure, it is annoying to lose $2,000, but I put the possibility of Bitcoin never going to more than $7,500 at maybe 1%, while I put the likelhood of it going up to $20,000 or $30,000 at 60%. So, the odds are in your favor. All in all, it's a large upside to a small downside. If you are very sceptical of Bitcoin, but you are looking to diversify your portfolio, $2,000 is a sane investment amount that yes, is annoying to lose, but won't change your life. If Bitcoin goes up again significantly, you will simply make a large amount of money. Small downside, large upside. If you already have a significant amount of money in crypto, it's better to shift away from Bitcoin. Yes, you will probably make a 2x to 3x on Bitcoin as well, but you can make 50x from the best altcoins in the same time. EDIT: I didn't include
NEM, because their market cap is too high for average uniqueness and potential
XRP, because they are centralised. It's too risky to say they will grow with BTC, since they are going against the philosophy of crypto.
LTC, because they are just as bad as BTC and BCH
EOS, because they have too many red flags
Cardano, because they don't have a product yet, too much hype
Stellar, because one of the founders was a MtGox founder and a large portion of Lumens are owned by the foundation/founders. Not worth the risk.
NEO, I almost included them, but they didn't make the cut. Good coin though.
Tron, because they can't write a proper white paper
Monero, because there are good alternatives at a fraction of the price.
DASH, because they are an ok coin, but nothing outstanding that convinced me
ETC, because they are the same as ETH
QTUM, ICON, OMG because their market cap is too high for average uniqueness and potential
Lisk, I almost included them, but they didn't make the cut. Good coin though.
Bitcoin gold, cheap copycat
Zcash, I almost included them, but they didn't make the cut. Good coin though.
Verge, shill factory, hype, bad vibe
DGD, because their market cap is too high for average uniqueness and potential
There are several good coins in the top 100 still, Waves, Ziliqa, WTC, PIVX, Bat, REQ, ENG, SKY, LINK, though all of the high risk coins I mentioned do the same or have a bigger or equal potential as them 20x smaller market cap. These top 100 coins aren't 20x better than the high risk coins, even if they were 5x times better, it would be better to invest in the high risk coins, because you would still make 4x more profit. That's why the medium risk coins are only starting at number 133, 140 and 202. This makes them are undervalued for being the best utility coins currently.
China orders banks to stop financing cryptocurrencies & plans his own digital currency (140 points, 225 comments)
At 8:00 on January 4, 2018, the founder of Vechain, Lu Yang, will make a breakthrough in technological transformation at the live-streaming "China-US Blockchain Broadcasting Group" (138 points, 70 comments)
355 points: Criptolete's comment in Just visited VeChain offices in Shanghai: got my hoodie and nice info for you!
299 points: Crypto078's comment in A message from Sunny Lu: STOP ASKING VECHAIN PARTNERS FOR MORE INFO
275 points: deleted's comment in VeChain mods removed a legitimate criticism to VeChain. It cant always be happy rainbows and sunshine. We need to hear and discuss all the sides. Here is the text that was removed by them.
General info and list of exchanges for DIPNET (DPN)
Project Discription About DIPNET With those technologies: industrial Ethernet, AI, 3D printing, Product Life-Cycle Management and block-chain, DIPNET creates a digital copy of physical world, and build a new kind of distribute smart product network. In the DIPNET, manufacturers would respond quickly to the fragmented market demand created by the entertainment industry in such scenario where people could purchase commodities while watching TV and movies, with the help of “Digital manufacturing and design”. Under the trend of social production shifting from “brand-driven economies of scale” to “IP-driven economies of scale”, DIPNET helps the consumer internet to better connect with the industrial internet. Besides, DIPNET blends blockchain technology, distributed smart manufacturing and the upgrading of social production and consumption to create value for the upgrading of the real economy. Problems of the traditional serial mode of production： The production cycle and the quality is difficult to guarantee In the entire social production chain, each production unit is an isolated island of information. If there appears any problem in any part of it, then all the subsequent parts need to be started all over again. So, this leads to a very long product cycle from maket research to marketing. What’s more, production units are risk-aversed, greatly limiting the innovation capability of them. At the same time, the perfection of social production is collaborated with several units, organizations and individuals. Once quality problems occur at any of them, it is difficult for us to quickly find where the bottlenecks are. Low manufacturing flexibility Most producers will devote many resources to improving the automation of their production systems, but the higher the automation level of a production line becomes, the less flexible it tends to be. Replacing product in a purely manual production line only needs to re-train the workers, but in an automated production line, it needs to replace the production equipment and software and even rebuild the production line. Generally, traditional manufactured products are to meet strong demand that “speculated” in advance by the market research. On the contrary, in terms of creativity and design, these products are not necessarily welcomed. The customized products cannot be low-cost rapidly applied. It is difficult to make customized production with large-scale production efficiency. Wasting of significant resources At the stage of design, production and circulation, business negotiations at various levels and signing off-line contracts will waste significant resources. It is hard for the manufacturer to accurately grasp the market. Manufacturer can only choose one from a large number of design works to produce, for the high mold cost, and many excellent design works never achieve their values. However, in the links of production and circulation, there exists the same waste. Before the production, raw materials transported to the factorys through the logistics sector. During the production process, the major methods are mold casting and machining, but the ability of modeling is limited by the tools used. The more complex of the shape of the object, the higher the manufacturing costs. After the products are produced, they need to be transported all over the world and therefore will occupy many resources such as energy, transportation, storage and manpower. DIPNET’s blockchain-based solutions Blockchain the collaboration is a nature of human society. The production management mode in the industrial age is no longer adapt to the mode of production and collaboration in the Internet age. By a technical way, the blockchain solves the problem of trust, which is the core of collaboration. Key blockchain technologies:P2P network and consensus algorithm provide decentralized communication and a model of democratic and equal community-based management model. All data is stored on the public database that is open and cannot be modified or deleted. Encouraging people to cooperate honestly. Distributed Production It starts a new flat and cooperative rather than hierarchical and top-down structured global emerging industrial market. That brings disruptive changes to the traditional social production. DIPNET gathers millions of people to take care of all stages from design to manufacturing, drastically reducing the production cost. Thereby thousands of individuals and small and medium-sized producers are able to challenge large producers who traditionally have the upper hand. Entertainment + Smart production Entertainment creates new demand. The whole social production is moving from the brand-driven economies of scale to the IP-driven economy of scope. For example, make all the props in a film become sellable goods, more than just deliberately implant one or two products or selling derivatives. By this way, DIPNET makes the idea that people would purchase commodities while watching TV and movies comes to reality. “Production 4.0”adopted parallel mode of production. That is, having getting through the data of development, design, production, manufacturing, marketing and other sectors, the traditional serial production mode turns to be parallel production mode. Only such full-digital manufacturing model can meet the fragmented needs created by the entertainment industry through scenes. Smart Contract Paradigm Smart contracts will run in highly constrained VMs. In particular, the communication between contracts will be restricted within the designated collection. And we believe this will make the relationship between the contracts clear, simple and predictable. We standardize the smart contracts to contract paradigms and let the community review them in order to ensure security. And give incentives for bug-reporters and outstanding contributors, to improve the quality of the contract paradigms. DIPNET offers three established smart contract paradigms initially which are available for users of production network including normal production contracts, inquiry production contracts and bidding contracts. These three kinds of contract paradigms can meet the vast majority of economic transfer needs. operation team Person Kan Lei THE CHAIRMAN OF DIPNET FOUNDATION Graduated from Beihang University; An advocate of industrial blockchain and entrepreneur; Worked for Siemens, 3M; Early investor of digital currency; The first online celebrity of “Industry 4.0”; Person Real Ma THE EXECUTIVE DIRECTOR OF NORTH AMERICAN COMMUNITY Ph.D of Keith University;Vice President of Quantitative Risk Control Department of Goldman Sachs Group;Ma has long been engaged in the design and operation of financial derivatives and has conducted in-depth studies on financial derivatives and market capitalization of digital currencies. Person Lee sungryoung (South Korea) THE DIRECTOR OF DIPNET FOUNDATION network equipment company C.E.O 10 years;network equipment computing system supply;network equipment organizational management;game broadcasting management;Bitmain mining distribution. Person Zhou QiaoFeng THE EXECUTIVE DIRECTOR OF JAPANESE COMMUNITY Ph.D of Osaka University and hiring researcher of Osaka University;Modeling algorithm expert;He has long focused on the digital cryptocurrency industry and the combination of industry and blockchain. Person Xing Miao THE DIRECTOR OF DIPNET FOUNDATION Responsible for the Business Development; Former Alibaba senior business expert; Experienced in strategic consulting and community operation; The early Chinese mainland bitcoin investors, especially in the field of in quantitative trading. Person Wang Hui THE DIRECTOR OF DIPNET FOUNDATION Responsible for entertainment industry cooperation; Deputy General Manager of Investment and Development department of Guoguang Global Media Cooperation Limited; He has long been engaged in the media, film, television, advertising, communications and technology management and investment for many years and has accumulated rich experience in media operations and network resources. He is also good at the investment and management in pan-entertainment, TMT and other areas. Person Sun ZanMiao THE DIRECTOR OF DIPNET FOUNDATION Responsible for business model design; Senior Researcher of Industrial Blockchain Laboratory; Chief researcher of Blockchain of the ZUC Entrepreneurship and investment Club; Early investors of blockchain; He has in-depth research on business applications of blockchain, digital asset investment and trading. Person Qian GongZi THE DIRECTOR OF DIPNET FOUNDATION Responsible for community operations; He has extensive experience in blockchain community operations and has successfully organized numerous intimate investment communities of blockchain aimed at traditional manufacturing entrepreneurs. What’s more, he was supported by 160,000 traditional entrepreneurial resources. Investors and Consultants Person Cao Yin Cao Yin Partner of Energy Blockchain Laboratory； Chief expert of Blockchain of Cinda Securities； Member of E-Residency Advisory Board of Estonia and Principal； Member of Hyperledger Project of China Working Group； Person 張旭 Zhang Xu Founding partner of Block Technologies; Executive director of Block Chain Application Technology Institute; Core member of the development team of blockchain wallet. Person Xu ShaoShan Xu ShaoShan Senior engineer of China Quality Certification Center; The director of "resource conservation product certification and government procurement Promotion Office"; vice chairman of the Executive Committee of the International Energy Efficiency Partnership (IPEEC); Person Yang Chao Yang Chao Executive Director of Digital Capital; An early participant in the Energy Blockchain Laboratory; He has worked for the asset management of SASAC. Person Li Yuan Li Yuan Founder of SelfSell; CEO of Beijing Xinheyun Technology Company, Ltd; Expert of blockchain technology and solution； Continuous entrepreneur Person Li BoZhi Li BoZhi The founder of the XBTING Foundation; Graduated from UBC University; Li was engaged in investment of well-known blockchain projects; Continuous entrepreneurs; Person Wan XiaoYan Wan XiaoYan CEO of Tongzheng Technology; Lu ever served as Deputy General Manager of Wuliangye Internet Subsidiary; Angel investor of Blockchain; Person Yu XiaoHan Yu XiaoHan Founder of Ziquan Capital; Ten years of financial industry experience; Director of NEO volunteer council; EXCHANGE LIST Binance Huobi Kucoin Bibox Qryptos Satoexchange BIGone Bitrue Bilaxy Bit-Z Linkcoin SECURE WALLET Ledgerwallet Trezor
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