eth_getTransactionByHash

eth_getTransactionByHash returns the full transaction object for a given hash on OP Mainnet — sender, recipient, value in ETH wei, gas fields, calldata, and signature — or its pending state if it has not yet been included. It is the standard way to look up a transaction once you have its hash. OP Mainnet is an OP Stack optimistic rollup (Bedrock) settling to Ethereum L1, with gas paid in ETH and ~2s blocks, so a submitted transaction usually moves from pending to mined quickly. Send the request to https://optimism.therpc.io/YOUR_API_KEY (chain ID 10, 0xa).

Use cases

• Confirm a transaction you submitted to OP Mainnet has been included by checking that blockNumber is non-null.
• Decode the input calldata to identify which contract function was invoked — for example a Velodrome swap or a Synthetix call.
• Pull the from address and value to verify an incoming ETH payment.

Parameters

Response

Example request

1curl https://optimism.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H "Content-Type: application/json" \
4  -d '{
5    "jsonrpc": "2.0",
6    "method": "eth_getTransactionByHash",
7    "params": ["0x0000000000000000000000000000000000000000000000000000000000000000"],
8    "id": 1
9  }'

Try it live in the Optimism playground.

Errors & troubleshooting

Common pitfalls

• A non-null object only means the transaction exists on OP Mainnet, not that it succeeded — fetch the receipt and check its status field for the actual execution outcome.
• A pending transaction comes back with blockHash, blockNumber, and transactionIndex all null; do not treat those nulls as "not found".
• A dropped or never-broadcast transaction returns null outright, so null-check the result before reading any field.

Supported networks

• Mainnet — Chain ID: 10
• Sepolia — Chain ID: 11155420

See also

• eth_getTransactionReceipt
• eth_getTransactionByBlockHashAndIndex
• eth_getTransactionByBlockNumberAndIndex

1curl https://optimism.therpc.io/YOUR_API_KEY \
2  -X POST \
3  -H 'Content-Type: application/json' \
4  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getTransactionByHash","params":[""]}'