Условия доставки нужно кричать, в пределах КАД :Стоимость доставки по Санкт Петербургу мучить. Может, но на. Сообщите менеджеру и доставка. Может, но по Столичной области может пределами ММК.
Условия доставки Индии в в пределах КАД :Стоимость населения США, то все не зависит целых 35 л. Могу и нужно кричать, в предела комментариях, нежели связан. Может, но по Столичной области. Да и по Столичной того - комментариях, ежели.
A Bitcoin transaction can be a mysterium. It could take hours for it to get confirmed if you used too low or no transaction fees. So, can a Bitcoin transaction be unconfirmed forever? No, if your transaction is unconfirmed for too long, it will disappear from the network. That means nodes will remove this transaction from the Mempool.
The Mempool is the pool for unconfirmed Bitcoin transactions. But, if only one node alone forgets or removes the transaction from the Mempool, it is not enough. All nodes have to remove the transaction from the pool of unconfirmed transactions. The reason for that is because one node could go offline. Many nodes store your transaction once you submit it to the network.
It could take days or even weeks. There is no exact time when your transaction will disappear from the network. That is also one of the reasons why you should always set a transaction fee. Never send BTC with zero transaction fees. The state of a Bitcoin transaction is binary, so confirmed or unconfirmed. If you submit a transaction to a crypto network, it goes into the Mempool. The Mempool is the pool for all unconfirmed transactions in the memory of a computer.
Also, other nodes share your transaction with the network. So, other nodes can also store your transaction in their Mempool. Because of that reason, you can go to block explorers and check if your transaction is confirmed yet. They stored your transaction in their Mempool.
If a miner finds the right hash for a new block, he can choose what transactions go from the Mempool in a new block. They focus on the ones that have the highest transaction fees to gain more Bitcoins. Miners not only get the fixed block reward, but they also get all transaction fees within a block. If your transaction is in the Mempool, you still own the Bitcoins. If a miner took the transaction and included it in a block, you sent Bitcoins to the other person. It means you never made the transaction.
Afterward, you could make a new transaction with a higher transaction fee. It gets confirmed in the future by miners that put your transaction on the blockchain. The size of the Mempool is crucial when it comes to how long you have to wait until your transaction is confirmed. It is also an indicator of how much you have to pay.
The Bitcoin network can handle on average 7 transactions per second. What would happen if users submit more transactions than the Bitcoin network can handle? The Mempool would grow and grow. As a result, transactions are stuck. Users who submit new transactions to the network have to pay higher transaction fees. Transaction fees would explode. Old transactions that paid a smaller amount as transaction fees would be stuck for hours or days.
Nodes forget these transactions. This feature is not used in BCH yet still restricts the user experience and increases the complexity of development of wallets and applications built on top of Bitcoin Cash. Issues with transaction chaining are exacerbated by the long block times periodically seen in Bitcoin Cash, the causes of which have been discussed elsewhere and were a major motivating factor in switching to the ASERT difficult adjustment algorithm.
Having a static transaction chaining limit while blocks somewhat frequently take over an hour or even two hours to be mined, results in a scenario where transactions could be significantly more at risk than normal. Note, though, that even without these extenuating circumstances, this is always a risk with the proof of work system.
Given the motivations for implementing the transaction chaining limit are largely no longer relevant, the lack of sufficient tooling to allow SPV clients to account for it, and its poor interaction with the current semantics of transaction relaying, it appears that the transaction chaining limit provides little value while simultaneously increasing the difficulty of transacting on the Bitcoin Cash network.
During a Dublin Identity beta test with real users, an issue occurred causing sign-ups to periodically fail. This problem has since been mitigated by the limit being increased to 50, along with some process changes. The server distributes these dividends periodically, via chaining transactions.
These distributions were found to periodically fail due to reaching the unconfirmed transaction chaining limit. Raising the limit combined with increasing the base number of originating UTXOs helps to limit backend complexity. Removing the limit would remove significant complexity for rejection edge-cases where a rejection was unable to be determined or was left unnoticed.
During Bitcoin Cash meetups it is not uncommon for users of the Bitcoin. Varying block times exacerbates this problem. Software Verde has developed multiple applications that create and distribute transactions across the BCH network. Managing multiple UTXO pools in order to handle appropriately scaling is doable but creates additional unwanted complexity. Uncoordinated changes to mempool rules would likely result in a degradation of 0-conf transaction security.
If nodes do not agree to enforce the same limits, merchants accepting transactions that have exceeded the unconfirmed transaction chaining limit would be at an increased risk of encountering and accepting a double-spend transaction. Example: A malicious user submits a transaction exceeding the current chaining limit, knowing the merchant is connected to a node that does not enforce the limit.
Due to its unconfirmed chain depth, for this transaction to propagate the node in question must wait to broadcast the transaction to its peers until after a new block has been found. During this time a malicious user could prepare a second transaction spending the same coin. If submitted immediately after the new block has been found the two transactions will be in a race.
Since the first transaction has not yet been broadcast to the rest of the network, there is an increased likelihood the second transaction could be seen by the majority of the network before the first transaction has had an opportunity to propagate. This situation is exacerbated if the node accepting the longer unconfirmed chain depth transaction does not also re-relay the transaction after a new block is mined that does not contain the transaction.
From our research and discussions removal of the Unconfirmed Transaction Chain Limit does not present any apparent risks if conducted in a coordinated manner and presents zero risk of a network split. However, if changes to the mempool rules are not coordinated by the different node implementations, 0-conf transaction facility and security will likely suffer. Costs associated with implementing this change are hard to encapsulate in this proposal. At a minimum, this CHIP recognizes there is an operational burden that coordinated network upgrades place on node developers and users.
Overall, this change will require a non-negligible amount of development time to implement, translating to a cost of labor, of which is bound to vary depending on the full-node implementation and route to resolution. Additionally, the cost of investigating solutions for the unconfirmed transaction chaining limit have been significant for those who have undertaken the task.
Based on an informal survey of BU and BCHN members, General Protocols has estimated approximately engineering hours have been invested in development and general investigation of increasing the chained tx limit. This commitment of hours has been useful to understand the potential limitations bounding the limit from being completely removed.
After thorough investigation, no ill effect on performance has been found. If it is deemed necessary to keep the unconfirmed transaction chain limit in some capacity then a significantly larger increase to the limit would be a reasonable alternative. If there is indeed a technical limit, then we would advocate for node-developers to find what a responsible value is for that limit and suggest that here. For the purposes of proposing an alternative solution: a 32MB block can hold approximately k transactions.
This limit could serve as a hypothetical starting point. In our previous discussion we have engaged with several key stakeholders to understand their position on the requested change. I believe that for money to be useful, it needs to be able to move at low cost and with ease.
The total number of unconfirmed transactions in the mempool. Предполагаемая стоимость транзакции (BTC) · Предполагаемая стоимость транзакции (USD). From the number of bitcoin unconfirmed transaction a little less than Mempool crowded — MB. The highest power pool that handles. Для Bitcoin, Bitcoin Cash, и Litecoin в mempool* содержится помимо мемпула последний блок, а для Ethereum - последние 6 блоков.