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A Polygon transaction hash (txhash) is a unique 66-character hexadecimal string that identifies every transaction on the Polygon PoS blockchain. When you send POL, interact with a smart contract, or mint an NFT on Polygon, the network generates a unique transaction hash that permanently records that event on-chain.
The hash looks like this: 0x227f7a71b4be6780c6825aca1aa53eee675fd0754006ee0d4db0f9b6299cda2c. It always starts with "0x" followed by 64 hexadecimal characters.
"A transaction hash is a cryptographically signed instruction that changes the blockchain state — it is the permanent, immutable record of every Polygon transaction."
— Polygon Documentation
Every transaction hash on Polygon is generated using the Keccak-256 hashing algorithm, the same algorithm used by Ethereum. Because Polygon is EVM-compatible, transaction hashes follow the same format as Ethereum transactions.
- Always starts with "0x" followed by 64 hexadecimal characters (0–9, a–f)
- Cryptographically unique — the same transaction will always produce the same hash
- Instantly verifiable on any Polygon block explorer like PolygonScan
- Immutable — once recorded on-chain, the hash cannot be changed or deleted
When you submit a transaction, your wallet broadcasts it to the Polygon network. Validators pick it up, include it in a block, and the transaction hash is returned to you immediately. You can then use this hash to track the status, confirm it was included in a block, and view all transaction details.