Blockchain Data Reveals Someone Is Trying to Slow Down Bitcoin Cash

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The bitcoin scalability problem refers to the discussion concerning the limits on the amount of transactions the bitcoin network can process.

It is related to the fact that records known as blocks in the bitcoin blockchain are limited in size and frequency. These jointly constrain the network's throughput. The transaction processing capacity maximum is estimated between 3. Business Insider in characterized this debate as an "ideological battle over bitcoin's future.

The block size limit has created a bottleneck in bitcoin, resulting in increasing transaction fees and delayed processing of transactions that cannot be fit into a block. Increasing the network's transaction processing limit requires making changes to the technical workings of bitcoin, in a process known as a fork.

Forks can be grouped into two types:. A hard fork is a rule change such that the software validating according to the old rules will see the blocks produced according to the new rules as invalid. In case of a hard fork, all nodes meant to work in accordance with the new rules need to upgrade their software. If one group of nodes continues to use the old software while the other nodes use the new software, a split can occur.

For example, Ethereum has hard-forked to "make whole" the investors in The Bitcoin chain slowwhich had been hacked by exploiting a vulnerability in its code. In the Nxt community was asked to consider a hard fork that would have led bitcoin chain slow a rollback of the blockchain records to mitigate the effects of a theft of 50 million NXT from a major cryptocurrency exchange.

The hard fork proposal was rejected, and some of the funds were recovered after negotiations and ransom payment. Alternatively, to prevent a permanent split, a majority of nodes using the new software may return to the old rules, as was the case of bitcoin split on 12 March bitcoin chain slow Bitcoin Cash is a hard fork of bitcoin increasing the maximum block size.

Bitcoin XTBitcoin Classic and Bitcoin Unlimited all supported an increase to the bitcoin chain slow block size through a hard fork. In contrast to a hard fork, a soft fork is a change bitcoin chain slow rules that creates blocks recognized as valid by the old software, i.

A user activated soft fork UASF is a contentious concept of bitcoin chain slow a soft fork rule change without the majority support of miners. Segregated Witness is an example of a soft fork. Technical optimizations may decrease the amount of computing resources required to receive, process and record bitcoin chain slow transactions, allowing increased throughput without placing extra demand on the bitcoin network.

Bitcoin chain slow modifications can be to either the network, in which case a fork is required, or to individual node software such as Bitcoin Core. Protocols such as the Lightning Network and Tumblebit have been proposed which operate on top of the bitcoin network as a cache to allow payments to be effected that are not immediately put on the blockchain.

Transaction throughput is limited practically by a parameter known as the block size limit. Various increases to this limit, and proposals to remove it completely, have been proposed bitcoin chain slow bitcoin's history.

From Wikipedia, the free encyclopedia. For a broader coverage related to this topic, see Bitcoin. Part of this section is transcluded from Fork blockchain. User activated soft fork. Retrieved 18 January Retrieved December 10, The maximum throughput is the maximum rate at which the blockchain can confirm transactions.

This number is constrained by the maximum block size and the inter-block time. Retrieved 2 July Retrieved 17 January Retrieved 1 July Retrieved 13 November Archived from the original on Retrieved 4 Jan Retrieved 13 March Retrieved 21 January Retrieved 4 July This is What to Expect".

Retrieved 24 August Retrieved 20 August Retrieved 22 June Retrieved 29 June Retrieved 6 October Retrieved 8 November The Bitcoin Unlimited Debate". History Economics Legal status. List of bitcoin companies List of bitcoin organizations List of people in blockchain technology. Cryptography portal Computing portal Free software portal Internet portal Numismatics portal. Retrieved from " https: Use dmy dates from December All articles lacking reliable references Articles lacking reliable references from March Views Read Edit Bitcoin chain slow history.

This page was last edited bitcoin chain slow 28 Aprilat By using this site, you agree to the Terms of Use and Privacy Policy.

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If you have sent a bitcoin payment in the last couple of weeks, you may have noticed that your transactions are taking much longer than expected to confirm. Since, like the Bitcoin network, we are currently working through a backlog, we want to thank you for your patience. With the high volume of questions we're getting about delayed payments, we decided it would be best to write a short explanation about what's happening with many bitcoin transactions right now.

Transactions on the Bitcoin network itself aren't controlled or confirmed by BitPay, but by the bitcoin miners which group transactions into "blocks" and add those blocks to the Bitcoin "blockchain" — the shared historical record of all transactions. When a transaction has been added to a block six blocks ago, it's considered a done deal. Currently, bitcoin network traffic is unusually high due to increasing demand for transactions per block.

Block sizes are limited, so this means that transactions which exceed the capacity for a block get stuck in a queue for confirmation by bitcoin miners.

This queue of unconfirmed transactions is called the bitcoin mempool. For context on what's happening now, here is a look at the current bitcoin mempool size. A lot of people are interested in using bitcoin for transactions. The bad news is that this network traffic may produce delays of a few hours to a few days for some users and a wait time of weeks for a small number of users. If your bitcoin transaction to a BitPay merchant has not confirmed yet, you will need to wait for it to be confirmed by bitcoin miners.

Since BitPay does not control confirmation times, there is unfortunately nothing we can do to speed up the process once your transaction has already been broadcast to the network. You can check your transaction's confirmation status and other payment details on any blockchain explorer like BitPay's block explorer Insight. Look up your transaction using your transaction ID or the sending or receiving bitcoin addresses, which can all be found in your bitcoin wallet that sent the payment.

For your transaction to be considered fully confirmed by most BitPay merchants, your transaction will need to have six confirmations. Note that until your payment has six confirmations on the bitcoin blockchain, the recipient will not have access to the funds and will not be able to refund your transaction.

While some BitPay merchants may choose to fulfill orders on payments with fewer block confirmations, you will need at least one block confirmation before your order can be considered complete. If your transaction confirms and the merchant does not fulfill your order, you don't need to reach out to BitPay. Because block sizes are limited, it's important for bitcoin miners to know which transactions they should include in blocks first.

Miners use prices to figure this out. When you broadcast a transaction, your total amount sent usually includes a "miner fee" which goes to pay miners. If you want your transaction to leave the bitcoin mempool and be added to a block quickly, it's important that you include a sufficient miner fee. This is why we strongly suggest using the BitPay wallet or another true bitcoin wallet that can dynamically calculate the miner fee needed for timely block confirmations. For reference, the website bitcoinfees.

Transactions are being added to the bitcoin mempool's full queue constantly. Some may have been sent with higher miner fees than the one sent with your payment. This means that with current network traffic, miners may deprioritize your unconfirmed transaction even if it was sent with an appropriate fee at the time. Your transaction will likely confirm, but if the Bitcoin network does not confirm it, it be spendable again in your wallet.

Funds are spendable again in the BitPay wallet after transactions fail to confirm for up to 72 hours, but other wallets may behave differently.

If you are not using the BitPay wallet, you should contact your wallet provider for help if your unconfirmed funds do not show up as spendable again after a few days. While BitPay does not control confirmation times on the Bitcoin network, we care about the payment frustrations BitPay merchants and purchasers are experiencing right now. For purchasers, our BitPay wallet team has been working on updates to the BitPay wallet for our next release which will help to mitigate the effects of these delays on the bitcoin network when they occur.

For bitcoin users and businesses alike, we're also continuing to explore options for faster, simpler, and more affordable bitcoin payments. We'll continue to post here on the BitPay blog as we make progress. If this article didn't answer your question, check out our payment guide or our new video walkthrough for more info on how to make a successful bitcoin payment. We have received your emails.

How Bitcoin Transactions Get Confirmed or Delayed Transactions on the Bitcoin network itself aren't controlled or confirmed by BitPay, but by the bitcoin miners which group transactions into "blocks" and add those blocks to the Bitcoin "blockchain" — the shared historical record of all transactions.

What To Do If You Have an Unconfirmed Transaction If your bitcoin transaction to a BitPay merchant has not confirmed yet, you will need to wait for it to be confirmed by bitcoin miners. How To Avoid Delayed Transactions Because block sizes are limited, it's important for bitcoin miners to know which transactions they should include in blocks first.