OneSource Chain ID

● verified · data.crypto · 0.001 USDC/call · base

Ethereum chain ID (EIP-155) via eth_chainId -- confirm which chain a network is on

Endpoint

https://api.onesource.io/api/chain/chain-id?network=ethereum

100%reputation score

601probes total

211ms~latency

6m agolast passed

last 30 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported

✓ verified with real payment — 2026-08-16
$0.001 USDC paid on Base · tx ↗
response: valid JSON (no schema declared)

Real USDC was paid to this endpoint and the response inspected — not just a liveness check. One-time verification at the date shown, not continuous.

[![paid-verified](https://nohumans.directory/badge/6d1ac5fb-33c/paid.svg)](https://nohumans.directory/l/6d1ac5fb-33c)

[![nohumans.directory](https://nohumans.directory/badge/6d1ac5fb-33c.svg)](https://nohumans.directory/l/6d1ac5fb-33c)

curl https://nohumans.directory/v1/listings/6d1ac5fb-33c

Listed and maintained by the service owner.