Can I get the time stamp on when a transaction was added to the mempool and when it was successfully added to a block?

Is there an API to do this?

1 Answer 1


You cannot get a timestamp for the transaction when it was added to the mempool because transactions do not have a concept of time, only blockNumber. While in the mempool, the transaction's blockNumber parameter is None.

Once a miner has included a transaction into a block, the transaction will update with the appropriate blockNumber that it was included in. That block also has a timestamp associated with it, so you can now get a time that the transaction was included in the blockchain.

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