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The Mempool team has launched an off-chain service to speed up bitcoin transactions outside the blockchain through mining pool partners. The service will be useful in the event of a sharp change in commission rates.
The platform cooperates with Foundry USA Pool, MARA Pool, SDICrypto, SpiderPool and Ocean Pool. They account for ~40% of the hashrate, according to the organization.
For confirming "stuck" transfers, Mempool Accelerator users will have to pay an additional fee for mining and service.
The process looks like this:
* search for a transaction on mempool. space;
* select the acceleration option;
* Payment in Bitcoin via Lightning Network (LN) or fiat via Cash App, Apple Pay or Google Pay without registration.
Mempool sends a request to partners who can make a decision about speeding up based on the new commission rate.
The transaction is not replaced – pools consider it with a higher priority. This increases the chances of its validation in the next block, although this is not guaranteed.
"Your transaction will be a priority for 43.4% of miners. This will reduce the expected waiting time before the first confirmation to ~9 minutes," the project's website says.
Bitcoin applications can integrate Mempool Accelerator through its API.
To increase transparency, request acceleration is shown in purple in the Mempool Block Audit panel.
Once the request is sent, they cannot be changed, and some may mark them with no refund to ensure that the service is not used for "pinning transactions or other types of abuse". Thus, the team intends to prevent an unfair advantage at the expense of other users.
Mempool Accelerator offers an alternative to existing on-chain methods to increase the chances of miners to enable transfer: replace-by-fee (RBF) and child-pays-for-parent (CPFP).
In RBF, the sender of an unconfirmed transaction creates a new one with a higher fee, spending some of the UTXO inputs often accepted on top of the original transaction.
However, a new transaction must be signed, the sender's wallet must support RBF, and the ID will also change.
In CPFP, the recipient spends their unconfirmed withdrawal, increasing the effective commission of the original transaction, since the miner cannot include a new transaction without processing the original one.
In this case, you also need to sign a new transfer, the sender's wallet must support CPFP, and restrictions mean that this is not possible for some transactions.
As an alternative, Mempool Accelerator relies on an off–chain payment. In this case, there is no need to sign a new transaction.
The main disadvantage is that in this case, users rely on a centralized third party, and not on the network of the first cryptocurrency.
In addition, the fee for the service is significantly higher than the average commission — about 100 times compared to its current level of $0.39, according to The Block. In other words, the service is only suitable for higher-priority transactions.
According to the Mempool team, users should always apply RBF or CPFP if possible.
Mempool Accelerator is useful in the following scenarios:
* limited wallet options for transactions;
* multisig difficulties;
* opening and closing LN channels;
* storing the same transaction ID.
Recall that the co-founder and CTO of Casa Jameson Lopp in October 2023 called on developers to more actively experiment with the first cryptocurrency to expand and improve its ecosystem.
In particular, the specialist noted solutions that appeared relatively recently-drive chains, Spiderchain and BitVM. In his opinion, they allow you to "unload" the mempool and expand the capabilities of smart contracts on bitcoin.
The platform cooperates with Foundry USA Pool, MARA Pool, SDICrypto, SpiderPool and Ocean Pool. They account for ~40% of the hashrate, according to the organization.
For confirming "stuck" transfers, Mempool Accelerator users will have to pay an additional fee for mining and service.
The process looks like this:
* search for a transaction on mempool. space;
* select the acceleration option;
* Payment in Bitcoin via Lightning Network (LN) or fiat via Cash App, Apple Pay or Google Pay without registration.
Mempool sends a request to partners who can make a decision about speeding up based on the new commission rate.
The transaction is not replaced – pools consider it with a higher priority. This increases the chances of its validation in the next block, although this is not guaranteed.
"Your transaction will be a priority for 43.4% of miners. This will reduce the expected waiting time before the first confirmation to ~9 minutes," the project's website says.
Bitcoin applications can integrate Mempool Accelerator through its API.
To increase transparency, request acceleration is shown in purple in the Mempool Block Audit panel.
Once the request is sent, they cannot be changed, and some may mark them with no refund to ensure that the service is not used for "pinning transactions or other types of abuse". Thus, the team intends to prevent an unfair advantage at the expense of other users.
Mempool Accelerator offers an alternative to existing on-chain methods to increase the chances of miners to enable transfer: replace-by-fee (RBF) and child-pays-for-parent (CPFP).
In RBF, the sender of an unconfirmed transaction creates a new one with a higher fee, spending some of the UTXO inputs often accepted on top of the original transaction.
However, a new transaction must be signed, the sender's wallet must support RBF, and the ID will also change.
In CPFP, the recipient spends their unconfirmed withdrawal, increasing the effective commission of the original transaction, since the miner cannot include a new transaction without processing the original one.
In this case, you also need to sign a new transfer, the sender's wallet must support CPFP, and restrictions mean that this is not possible for some transactions.
As an alternative, Mempool Accelerator relies on an off–chain payment. In this case, there is no need to sign a new transaction.
The main disadvantage is that in this case, users rely on a centralized third party, and not on the network of the first cryptocurrency.
In addition, the fee for the service is significantly higher than the average commission — about 100 times compared to its current level of $0.39, according to The Block. In other words, the service is only suitable for higher-priority transactions.
According to the Mempool team, users should always apply RBF or CPFP if possible.
Mempool Accelerator is useful in the following scenarios:
* limited wallet options for transactions;
* multisig difficulties;
* opening and closing LN channels;
* storing the same transaction ID.
Recall that the co-founder and CTO of Casa Jameson Lopp in October 2023 called on developers to more actively experiment with the first cryptocurrency to expand and improve its ecosystem.
In particular, the specialist noted solutions that appeared relatively recently-drive chains, Spiderchain and BitVM. In his opinion, they allow you to "unload" the mempool and expand the capabilities of smart contracts on bitcoin.
