How to get signed transaction hash before mining? [Ethereum]

Question

Is it possible to get transaction hash before send transaction to node? How transactionHash is calculated?

score 1 · Answer 1 · answered Jan 07 '18 at 18:22

1

The transaction hash is the rlp hash of the signed transaction: i.e.

answered Jan 07 '18 at 18:22

user2163865

Is it the same hash as received by ETHEREUMJS-TX.hash()? [ethereumjs.Util.sha3(ethereumjs.RLP.encode(tx_.raw)).toString('hex')] – user3184743 Jan 12 '18 at 20:08
I believe this is wrong: the transaction is hashed, THEN signed. From the linked article – Dogweather Nov 05 '20 at 18:56

1 Answers1