Bitcoin Average Block Time Surges to 13 Minutes for the ...
avg-confirmation-time - Blockchain Charts
security - What keeps the average block time at 10 minutes ...
Bitcoin's Average Block Time Spikes to 13 Minutes for the ...
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[Digitalcoin](http://digitalcoin.tech/) is a diligently maintained cryptocurrency intent on market stability, making it ideal for commerce and saving. Possible changes to Digitalcoin's parameters can be implemented upon community rule.
08-31 08:46 - 'Massively(!) overpaid, but this should get you into the next block. Keep in mind that while every new block is mined every 10 minutes on average, the actual time can vary between few seconds and an hour (though both is...' by /u/TheGreatMuffin removed from /r/Bitcoin within 681-691min
''' Massively(!) overpaid, but this should get you into the next block. Keep in mind that while every new block is mined every 10 minutes on average, the actual time can vary between few seconds and an hour (though both is unlikely), so there is some inherent variance, even with the highest fees. You can look at the current status of the mempool (= other transactions that compete with your transaction for confirmations) here: [link]1 ''' Context Link Go1dfish undelete link unreddit undelete link Author: TheGreatMuffin 1: j*che*-ho**i*ke.de/*ueue*#0,30* Unknown links are censored to prevent spreading illicit content.
It's easy to compare blockchain hashrates when the Proof-of-Work algorithm is the same. For example if Bitcoin has a hashrate of SHA-256 @ 40 PH/s and Bitcoin Cash has a hashrate of SHA-256 @ 2 PH/s, it's easy to see that for a given period of time the Bitcoin blockchain will have 20x (40/2) the amount of work securing it than the Bitcoin Cash blockchain. Or to say that differently, you need to wait for 20x more Bitcoin Cash confirmations before an equivalent amount of work has been done compared to the Bitcoin blockchain. So 6 Bitcoin confirmations would be roughly equivalent to 120 Bitcoin Cash confirmations in the amount of work done. However if the Proof-of-Work algorithms are different, how can we compare the hashrate? If we're comparing Bitcoin (SHA-256 @ 40 PH/s) against Litecoin (Scrypt @ 300 TH/s), the hashes aren't equal, one round of SHA-256 is not equivalent to one round of Scrypt. What we really want to know is how much energy is being consumed to provide the current hash rate. Literal energy, as in joules or kilowatt hours. It would be great if we had a universal metric across blockchains like kWh/s to measure immutability. However that's fairly hard to calculate, we need to know the average power consumption of the average device used to mine. For GPU/CPU mined Proof-of-Work algorithms this varies greatly. For ASIC mined Proof-of-Work algorithms it varies less, however it's likely that ASIC manufacturers are mining with next generation hardware long before the public is made aware of them, which we can't account for. There's no automated way to get this data and no reliable data source to scrape it from. We'd need to manually research all mining hardware and collate the data ourself. And as soon as newer mining hardware comes out our results will be outdated. Is there a simpler way to get an estimated amount of work per blockchain in a single metric we can use for comparisons? Yeah, there is, we can use NiceHash prices to estimate the cost in $ to secure a blockchain for a given timeframe. This is directly comparable across blockchains and should be directly proportionate to kWh/s, because after all, the energy needs to be paid for in $. How can we estimate this?
Get the blockchains Proof-of-Work algorithm
Lookup the average price per hash on NiceHash for this algorithm
Multiply price per hash by total hashrate per second
Now we have an estimated total Proof-of-Work metric measured in dollars per second ($/s). The $/s metric may not be that accurate. Miners will mark up the cost when reselling on NiceHash and we're making the assumption that NiceHash supply is infinite. You can't actually rent 100% of Bitcoin's hashpower from NiceHash, there isn't enough supply. However that's not really an issue for this metric, we aren't trying to calculate the theoretical cost to rent an additional 100% of the hashrate, we're trying to get a figure that allows us to compare the cost of the current total hashrate accross blockchains. Even if the exact $ value we end up with is not that accurate, it should still be proportionate to kWh/s. This means it's still an accurate metric to compare the difference in work done over a given amount of time between blockchains. So how do we compare these values between blockchains? Once we've done the above calculations and got a $/s cost for each blockchain, we just need to factor in the average block time and calculate the total $ cost for a given number of confirmations. Then see how much time is required on the other blockchain at it's $/s value to equal the total cost. So to calculate how many Litecoin confirmations are equivalent to 6 Bitcoin confirmations we would do:
Bitcoin (SHA-256 @ 40 PH/s) or ($100/s)
Litecoin (Scrypt @ 300 TH/s) or ($10/s)
Bitcoin's average block time is 10 minutes (600 seconds)
6 Bitcoin confirmations on average is 60 minutes (3,600 seconds)
Bitcoin's total $ cost for 6 confirmations is ($100 * 3,600 seconds) $360,000
At Litecoin's hashrate of $10/s it would take ($360,000 / $10) 36,000 seconds (10 hours) to complete an equivalent amount of work
Litecoin's average block time is 2.5 minutes (150 seconds)
The amount of Litecoin blocks expected over this period of time is (36,000 seconds / 150 seconds) 240 blocks.
Therefore we can say that 240 Litecoin confirmations are roughly equal to 6 Bitcoin confirmations in total amount of work done.
$/s doesn't mean what it sounds like it means.
The $/s values should not be taken as literal costs. For example:
Bitcoin's total $ cost for 6 confirmations is ($100 * 3,600 seconds) $360,000
This is does not mean you could do a 51% attack on Bitcoin and roll back 6 blocks for a cost of $360,000. An attack like that would be much more expensive. The $/s value is a metric to compare the amount of work at the current hashrate between blockchains. It is not the same as the cost to add hashrate to the network. When adding hashrate to a network the cost will not scale linearly with hashrate. It will jump suddenly at certain intervals. For example, once you've used up the available hashrate on NiceHash you need to add the costs of purchasing ASICs, then once you've bought all the ASICs in the world, you'd need to add the costs of fabricating your own chips to keep increasing hashrate.
These metrics are measuring "work done", not security.
More "work done" doesn't necessarily mean "more security". For example take the following two blockchains:
Bitcoin Cash (SHA-256 @ 2 PH/s) or ($5/s)
Zcash (Equihash @ 4 GH/s) or ($3/s)
Bitcoin Cash has a higher $/s value than Zcash so we can deduce it has more "work done" over a given timeframe than Zcash. More kWh/s are required to secure it's blockchain. However does that really mean it's safer? Zcash is the dominant blockchain for it's Proof-of-Work algorithm (Equihash). Whereas Bitcoin Cash isn't, it uses the same algorithm as Bitcoin. In fact just 5% of Bitcoin's hashrate is equivalent to all of Bitcoin Cash's hashrate. This means the cost of a 51% attack against Bitcoin Cash could actually be much lower than a 51% attack against Zcash, even though you need to aquire more kWh/s of work, the cost to aquire those kWh/s will likely be lower. To attack Bitcoin Cash you don't need to acquire any hardware, you just need to convince 5% of the Bitcoin hashrate to lend their SHA-256 hashpower to you. To attack Zcash, you would likely need to fabricate your own Equihash ASICs, as almost all the Equihash mining hardware in the world is already securing Zcash.
Accurately calculating security is much more complicated.
These metrics give a good estimated value to compare the hashrate accross different Proof-of-Work blockchains. However to calculate if a payment can be considered "finalised" involves many more variables. You should factor in:
Is this cryptocurrency the dominant cryptocurrency for it's Proof-of-Work algorithm?
What is the market cap of this cryptocurrency?
What is the daily trading volume of this cryptocurrency?
What is the $ value of this transaction?
If the cryptocurrency doesn't dominate the Proof-of-Work it can be attacked more cheaply. If the market cap or trading volume is really low, an attacker may crash the price of the currency before they can successfully double spend it and make a profit. Although that's more relevant in the context of exchanges rather than individuals accepting payments. If the value of the transaction is low enough, it may cost more to double spend than an attacker would profit from the double spend. Ultimately, once the cost of a double spend becomes higher than an attacker can expect to profit from the double spend, that is when a payment can probably be considered "finalised".
Ethereum. Before I explain why, I need you to understand something. Bitcoin and Ethereum are at two completely different stages within their potential. They also do not share the exact same mission; therefore, you do have to understand their differences to form an opinion about which one has the biggest use. Before we look at the coins in detail, let's start with the potential ROI (100% = 2x Original Investment). Bitcoin’s current market cap is $193,165,354,468 in order for you to make 100% this number would need to double to just under $400 Billion. Ethereum’s current market cap is $44,715,990,083 , roughly 1/5th of Bitcoins. In order for you to make 100%, the price would need to increase to just under $90 Billion. - This is obviously more probable. This will not serve as the only variable in making a decision, we now need to break down their uses and differences. Bitcoin What is Bitcoin? A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without the burdens of going through a financial institution. Digital signatures provide part of the solution, but the main benefits are lost if a trusted party is still required to prevent double-spending. We propose a solution to the double-spending problem using a peer-to-peer network. The network timestamps transactions by hashing them into an ongoing chain of hash-based proof-of-work, forming a record that cannot be changed without redoing the proof-of-work. The longest chain not only serves as proof of the sequence of events witnessed, but proof that it came from the largest pool of CPU power. As long as honest nodes control the most CPU power on the network, they can generate the longest chain and outpace any attackers. The network itself requires minimal structure. Messages are broadcasted on a best effort basis, and nodes can leave and rejoin the network at will, accepting the longest proof-of-work chain as proof of what happened while they were gone. Peer-to-Peer (P2P): is a technical way of saying computers (peers) that are connected together via the internet. Timestamps: are a sequence of characters that identify exactly when a certain event occurred, giving the exact time and date. Hashing: is the process of compacting large quantities of data into smaller fixed sizes. Proof-of-work: is the verification that the individual peer created the said hash Nodes: are computers that are connected to the blockchain Bitcoin is a first generation cryptocurrency, that was created in 2009 with the intention to become the currency of the internet. Its Applications Safe Haven Being that billions of people are under the control of a broke economy or volatile dictatorship, Bitcoin is beginning to become a medium in which people within underdeveloped countries feel as a more secure place to store their value. Remittances The current operation costs roughly $600B annually, all at the expense of separated families. Bitcoin can now serve as a tool that operates the exact same way and only costs 1/10th of the price. A transaction on the Bitcoin network also processes faster therefore giving the people a strong reason to make the switch. Currency Bitcoin is recognized as an asset, but can also be identified as an efficient currency in which people can buy and exchange with. With this being an application of Bitcoin, as the market continues to decrease in volatility, the use for Bitcoin will increase within businesses and everyday people that transact on a daily basis. These are just a few, but for the sake of answer length, let’s move onto some of the scalability issues with Bitcoin that hinder my decision of choosing Bitcoin over Ethereum. Bothering Issues with Bitcoin Energy A study from Digiconomist found that each transaction on the Bitcoin blockchain uses 236 KWh worth of electricity, this amount is enough to power 8 U.S households for an entire day. Scalability Energy consumption will hinder the scalability issues of Bitcoin, however the other issue that arises with POW mining is that with the increase in cost associated with mining BTC it is less economical to mine Bitcoin. This would limit the distributed nodes (miners) globally and allow a larger percentage of control to the dominant mining pools / farms. This would lead to a more centralized blockchain, where they can change the rules of BTC as they please. The supply of Bitcoin is finite, capped at 21 million. Eventually (currently predicted for 2140) Bitcoin's supply will run out. Once this happens, miners will no longer receive rewards for completing blocks but instead will be given fees. The fees will be drastically high in relative terms, and people will stop using the blockchain. Also, if miners decide that this is uneconomical for them to process the transactions and use their computing power elsewhere the speed of transactions for Bitcoin will drastically slow down, rendering one of the fundamental values of a Bitcoin (speed) useless. Blue chip Companies This is more so for all cryptocurrencies, but Bitcoin in particular. It’s not a matter of if but a matter of when a blue-chip company such as Facebook, Amazon or Google decides to implement their own cryptocurrency. Another possibility is a potential ‘world coin’ which global governments will all agree on using, this may seem unrealistic but it is definitely not impossible and many benefits would arise from having such a currency. Quantum Computing Bitcoin is said to be Quantum resistant, on the whitepaper it mentions that: ‘To compensate for increasing hardware speed and varying interest in running nodes over time, the proof-of-work difficulty is determined by a moving average targeting an average number of blocks per hour. If they're generated too fast, the difficulty increases.’ This may seem quantum resistant but it is important to understand that the difficulty is changed every 10 minutes and this is more than enough time for QC to mine all of Bitcoin’s remaining coins. Bitcoin Bubble The last point of this section is to recognize that the Bitcoin bubble could pop loud enough to crash the market. Due to a whole lot of hype, and even more speculative and uneducated buyers, Bitcoin could face a peak in which a simple spark Ethereum What is Ethereum? Ethereum is an open source platform with the mission to build and inspire next-generation decentralized applications. In other words, the applications being built on the Ethereum network would have no middle men. Users are able to interact safely with social and financial systems to transact peer to peer, therefore opening a new realm of opportunity within decentralized development on specifically the exchange of value. Like the Bitcoin network exchanges Bitcoin, applications within the Ethereum network would exchange ETHER. Therefore, making the Ethereum network have its own digital currency or, cryptocurrency that these decentralized applications would run on. On the Ethereum network, developers are able to build these decentralized applications simply, within this seemingly complicated new technology. Think of it as Shopify or Volusion, these are centralized networks in which users/developers can build e-commerce stores more efficiently and cost effectively. Ethereum is similar in this aspect, the network was essentially created to assist and fuel the growth of decentralized blockchain applications within its network. Smart Contracts Now, what Ethereum is based on, is a thing called “Smart Contracts” Developers are extremely excited about this tool, a smart contract is similar to how it sounds, it’s a digital contract that self-executes… Think of it as a virtual vending machine. A smart contract is a digital contract between two people in which the technology or tool handles the management, performance, enforcement and payment of the agreement. The smart contract has its own digital bank account of ETHER and settles once the product is received or the service is completed therefore greatly improving the efficiency of data tracking, payment processing and user friendliness of each decentralized application. Let’s dive into an example Music The first age of the internet brought quite a bit of disruption to the music industry… Idk if you knew, but if you we’re a songwriter 25 years ago and produced a hit song that got a million singles you would acquire royalties of up to $50,000. Now if you were to produce a hit song that gets a million streams you don’t get $50,000, you get $45… Enough to cover the first round at the bar. In result, musicians are now finding other ways to produce revenue with their music. One being the utilization of a blockchain ecosystem like Ethereum. Music applications are now being built for musicians to reclaim their content, smart contracts are being implemented into the music itself, therefore the music protects the intellectual property rights of the artist. You want to listen to the song? It’s free… or maybe a few micro pennies to download. You want to put the song in your video or movie? Make it your ringtone? These each cost a different price and presented at the point of purchase would be its underlying IP rights for the use of that piece of music. Musicians are absolutely hyped about this because now, the song becomes a business. It’s out there on this platform marketing itself, protecting the rights of the author and because the song has a payment system; in the sense of a bank account, all of the money then flows back to the artist, and they control the industry rather than these powerful intermediaries. This concept could apply not only to just songwriters but any creator of content, from art, to inventions, to scientific discoveries or the work from independent journalists. There are endless industries in which people do not gain fair compensation in which the underlying technology of Ethereum could benefit in a big way. Other examples: · A smart contract can be created to pay a worker for every hour they work, they log their hours on the blockchain and then after verification the funds are instantly transferred to them · Buying goods internationally can be tracked and verified – reducing fraud. · Property buying can be facilitated through the contract · Every industry that has a contract in place will be able to use the blockchain of Ethereum It is also worth noting that Ethereum is also a lot quicker than Bitcoin, average block time being 15 seconds for Ethereum opposed to 10 minutes for Bitcoin. Personally, I am invested into both. If I HAD to choose, like I said it would be Ethereum simply because of where it is now in comparison to its potential as well as its very transparent, direct, opportunistic mission towards the hosting of decentralized blockchain applications.
Hey all Reddit mod for SUQA here, With the current focus on 51% attacks thought it was worth drawing attention to what some coins (like Suqa) are doing to protect against this. The Suqa devs identified this as a real threat a while ago so entered into an arrangement with Komdo to secure their chain. Some more info on what this means:
SUQA Foundation has partnered up with Komodo Platform to utilize a unique security mechanism to protect its own blockchain. Essentially the hashpower of the Bitcoin network is used to protect the SUQA blockchain. This is made possible by storing backups of the SUQA blockchain into the Bitcoin ledger. Every ten minutes (Bitcoin average block time) a snapshot is taken of the entire SUQA blockchain. Then this snapshot is written into a block on the Bitcoin blockchain. This process is called notarization and it is the backbone of Komodo’s security mechanism. Komodo Platform’s notary nodes carry out the technical work required to successfully complete notarizations.
Full article here Something new PoW coins should consider? Seems like it is going to be a huge risk for all coins not secured like this, especially if your coin is using an algorithm that has a much larger coin using the same algo. This site is being passed around a fair bit at the moment, makes for some interesting viewing.... Coins that use new algorithms (i.e. without a larger hashrate dedicated to a larger coin) are probably safer than those without, but ultimately using something like Dpow seems like a good idea too for any new coin launching or with low hashrate. I would be very annoyed to lose any coins my tiny rig mined through an attack :)
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Average Confirmation Time The average time for a transaction with miner fees to be included in a mined block and added to the public ledger. 30 Days 60 Days 180 Days 1 Year 3 Years All Time Raw Values 7 Day Average 30 Day Average Both in bitcoin blockchain and ethereum blockchain, there is an expected block time, and an average block time. In bitcoin, the expected block time is 10 minutes, while in ethereum it is between 10 to 19 seconds. Both bitcoin and ethereum, at the time of this writing use a proof of work based distributed consensus algorithm (ethereum is planned to move to a proof of stake based algorithm with ... BitcoinAverage is a well-known web platform that provides real-time and updated cryptocurrency data, specifically data gathered from 39 major bitcoin exchanges and 168 fiat currency pairs. BitcoinAverage offers free and licensed access to this data. What Is BitcoinAverage? BitcoinAverage is a product of Blockchain Data LTD, based in London and founded by Shaun Gilchrist. Bitcoin Average Block Time Surges to 13 Minutes for the First Time Since 2018. Mar 22, 2020 at 14:09 // News. Author Coin Idol. Recent data indicates that the amount of time a Bitcoin transaction takes to process has increased to its highest since November 2018. The Block time for the past few days has been recorded at more than 13 minutes. This increase in block time indicates that ... Register now, free API! The blockchains first BTC price index. Realtime values & charts from bitcoin exchanges in CNY, USD, EUR, GBP, RUB, PLN & many more ...
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