eth_getTransactionByHash

eth_getTransactionByHash returns the full transaction object for a given transaction hash on Base — sender, recipient, value in wei, gas fields, input data, nonce, and, once mined, its block hash, number, and index. Base is Coinbase's OP Stack optimistic rollup that settles to Ethereum L1 and pays gas in ETH, and with the sequencer producing blocks every ~2 seconds a freshly submitted transaction usually resolves here within a couple of seconds. Call it at https://base.therpc.io/YOUR_API_KEY (chain ID 8453, hex 0x2105) with a 32-byte hash; you get the transaction object, or null if it is unknown or still pending in the mempool.

Use cases

• Confirm a transaction you broadcast to Base has been included by checking that blockNumber is non-null — given ~2s blocks, that flip happens quickly.
• Decode the input field's 4-byte selector and arguments to identify which contract function was called, for example a swap on Aerodrome or Uniswap.
• Pull the from address and value to verify an incoming ETH payment before crediting it.

Parameters

Response

Example request

1curl https://base.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 Base playground.

Errors & troubleshooting

Common pitfalls

• A non-null object only means the transaction exists, not that it succeeded — fetch eth_getTransactionReceipt and read its status field (0x1 success, 0x0 revert) for the execution outcome.
• A pending transaction comes back as a real object but with blockHash, blockNumber, and transactionIndex all null; treat those nulls as "not yet mined".
• Dropped or never-broadcast hashes return null outright, so null-check the response before reading any field.

Supported networks

• Mainnet — Chain ID: 8453
• Sepolia — Chain ID: 84532

See also

• eth_getTransactionReceipt
• eth_getTransactionByBlockHashAndIndex
• eth_getTransactionByBlockNumberAndIndex

1curl https://base.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":[""]}'