Ethereum: bitcoind error “minimum mempool fee not met” preventing me from sending btc on the blockchain

Bitcoin Transaction Error on Ethereum: Minimum Mempool Fee Not Reached

As a frequent user of the Ethereum blockchain, it is frustrating to encounter errors that prevent you from sending Bitcoin (BTC) and other cryptocurrencies. In this article, we will take an in-depth look at the issue and provide solutions to help you resolve the “minimum mempool fee not reached” error in your Bitcoind client.

What is Mempool?

On the Ethereum blockchain, a mempool is a queue of transactions waiting to be executed by the network. When a transaction has enough space available in the mempool and meets specific conditions (such as having enough balance and enough time since the last update), it can be executed, resulting in an “out of mempool” error.

Error #26: Minimum mempool fee not reached

When you see the following message:

BitcoindException(super=com.neemre.btcdcli4j.core.BitcoindException:

Error #-26:66: Minimum mempool fee not reached, code = -26)

This indicates that the Bitcoind client has encountered an error while trying to execute a transaction due to not enough space in the mempool. This error can be caused by several factors, including:

• Insufficient available space in the mempool

• Excessive network congestion

• High demand for Bitcoin transactions

Solutions to resolve the minimum mempool fee not reached error

To resolve this issue, follow these steps:

• Increase the mempool size – You can increase the mempool size by adding a --max-memory or --mempool-size parameter when running Bitcoind. For example:

• Using bitcoind -m 10000 increases the maximum available memory in the mempool to 10,000 bytes.

• Adjust network congestion – If the issue is caused by high network congestion, try reducing the number of connections or increasing the network connection timeout. You can do this by adding a --network parameter, such as:

• bitcoind --network=eth1 to use the Ethereum network instead of the default testnet.

• Increase mempool size in large-scale scenarios – If you are working in a large-scale environment with many transactions, increasing the mempool size can help alleviate congestion issues.

• Try using a different Bitcoin client

  – Some Bitcoind clients may have bugs that affect mempool behavior. You can try switching to a different client, such as bitcoind-cmd or bitcoin-cli.

• Increase Bitcoin transaction processing time – If you are experiencing high transaction demand, increasing the transaction processing time (TPT) on your mining rig could help alleviate congestion issues.

• Check for updates and bug fixes – Make sure Bitcoind is updated to the latest version, as newer versions often fix performance and security issues.

Additional Tips

• Regularly clear the mempool by running bitcoind --clear-mempool or bitcoin-cli clearmem.

• Use a reliable and fast network connection when sending transactions.

• Consider using a more powerful mining rig or upgrading your hardware if you experience high transaction volumes.

By following these steps and adjusting your Bitcoind settings, you should be able to resolve the “mempool min fee not met” error and continue successfully sending Bitcoin transactions on the Ethereum blockchain.