eth_getTransactionByHash on Optimism
Fetches a transaction's full details (from, to, value, input, gas) by its hash. Returns null if the transaction is unknown or still pending propagation.
Null covers both 'unknown' and 'still propagating', so treat it as 'not yet' and retry rather than 'never'. The blockNumber field stays null until the tx is mined — the cleanest pending-vs-mined check.
Optimism endpoint (public — no key)
https://rpc.nodeflare.app/op/publicMethod
eth_getTransactionByHash
Cost
2 CU
Chain ID
10
Block time
~2 s
Finality
~2 s soft · L1-final ~13 min
Transactions on Optimism
As the OP Stack pioneer, Optimism transactions carry an L1 data fee on top of L2 execution. Read the receipt's l1Fee fields for the true total cost.
Parameters
[txHash]cURL
curl https://rpc.nodeflare.app/op/public \
-X POST \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x0000000000000000000000000000000000000000000000000000000000000000"],"id":1}'ethers.js
import { ethers } from 'ethers';
const provider = new ethers.JsonRpcProvider(
'https://rpc.nodeflare.app/op/public'
);
const result = await provider.send('eth_getTransactionByHash', ["0x0000000000000000000000000000000000000000000000000000000000000000"]);Try it live
Runs the example above against the public Optimism endpoint — straight from your browser.
eth_getTransactionByHash on Optimism — FAQ
How do I call eth_getTransactionByHash on Optimism?
POST a JSON-RPC 2.0 request with "method": "eth_getTransactionByHash" to NodeFlare's Optimism endpoint at https://rpc.nodeflare.app/op/public. No API key is required for the public endpoint.
What does eth_getTransactionByHash cost on the free tier?
eth_getTransactionByHash is weighted at 2 compute units per call. The free tier includes 2,000,000 CU/month, so that is roughly 1,000,000 eth_getTransactionByHash calls per month — no credit card.
Is eth_getTransactionByHash available on the public Optimism endpoint?
Yes. eth_getTransactionByHash works on the public Optimism endpoint (https://rpc.nodeflare.app/op/public) with no API key, rate-limited per IP. A free key adds higher limits and a dedicated path.
Anything Optimism-specific to know when using eth_getTransactionByHash?
As the OP Stack pioneer, Optimism transactions carry an L1 data fee on top of L2 execution. Read the receipt's l1Fee fields for the true total cost.
Call eth_getTransactionByHash on Optimism with a free key
2,000,000 compute units/month, heavy methods unlocked, every chain included. No credit card.
Get your free API key →eth_getTransactionByHash on other chains