A transaction hash — also called a transaction ID or TxID — is a unique identifier for every transaction recorded on a blockchain. It acts like a digital receipt, letting anyone verify, track, and review a transaction's details on-chain. This guide explains it.
What it is and how it's made
A transaction hash is a cryptographic hash of a transaction's raw data [1]. When a transaction is created, a node encodes the transaction data (inputs, outputs, amounts, signatures, and so on) and runs it through a hash function to produce the TxID. It is typically a 64-character hexadecimal string; on Ethereum, TxIDs are prefixed with 0x [2].
Transaction hash at a glance
What it's used for
With a TxID, you can paste it into a block explorer to confirm a transaction's status, amount, time, and addresses [1]. When you check a transfer with support or a counterparty, the TxID is often the most direct proof.
The bottom line
A transaction hash is the unique "fingerprint" of each on-chain transaction, used to verify and track it. Knowing where to find it and how to use it lets you check any transfer with confidence. To keep learning the fundamentals, follow more from Bitbase Academy.
Disclaimer: This article is educational content from Bitbase Academy, provided for information only. It does not constitute investment, trading, tax, or financial advice. Written as of June 2026; refer to the latest official information.
References
[1] Binance Academy, "Transaction ID (TXID)." academy.binance.com
[2] Coinbase, "What is a transaction hash/hash ID?" help.coinbase.com
