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Transaction Hash Explained

What is a Transaction Hash?​

A Transaction Hash is a unique identifier used to identify a specific transaction on the blockchain. It is a fixed-length string obtained by hashing the transaction data.

Components​

A typical transaction hash is the result of hashing the following information:

  1. Basic Transaction Information
  • Sender address
  • Receiver address
  • Transaction amount
  • Gas fee
  • Nonce (transaction sequence number)
  1. Contract-related Information (if it is a contract transaction)
  • Contract address
  • Function call data
  • Parameters

Actual Example​

# A typical transaction hash
0x7d013a39fbf123e54b00f3a33c3f7f4d33057fb28d05e707aa39aeea83367ad0

Uses​

  1. Transaction Tracking
  • Query transaction status
  • Confirm whether the transaction was successful
  • View transaction details
  1. Transaction Verification
  • Ensure transaction integrity
  • Prevent transaction tampering
  1. Transaction Reference
  • Reference specific transactions in applications
  • Associate related operations

Using in Rooch​

// Query transaction details
const txInfo = await client.getTransaction({
    hash: "0x7d013a39fbf123e54b00f3a33c3f7f4d33057fb28d05e707aa39aeea83367ad0"
});

// Wait for transaction completion
await client.waitForTransaction({
    hash: "0x7d013a39fbf123e54b00f3a33c3f7f4d33057fb28d05e707aa39aeea83367ad0"
});

Notes​

  • Transaction hashes are unique
  • Hash values are irreversible
  • Any change in transaction data will result in a completely different hash value
  • Transaction hashes are usually used as receipts or proofs of transactions