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OneSource Contract Introspection

● verified · data.crypto · 0.005 USDC/call · base

Contract introspection via eth_call -- name, symbol, decimals, and ERC20/721/1155 interface support

Endpoint

https://api.onesource.io/api/chain/contract/0xdac17f958d2ee523a2206206994597c13d831ec7?network=ethereum

Verification

100%reputation score
2358probes total
658ms~latency
58m agolast passed

We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.

On-chain payments

16kUSDC payments, 30d
2,018distinct paying wallets
$112.25USDC received, 30d
70listings share this payTo
2026-09-05: 492 payments, 57 payers, $2.012026-09-06: 404 payments, 52 payers, $1.652026-09-07: 181 payments, 27 payers, $0.742026-09-08: 402 payments, 56 payers, $1.662026-09-09: 406 payments, 64 payers, $1.952026-09-10: 659 payments, 80 payers, $3.292026-09-11: 749 payments, 93 payers, $4.162026-09-12: 445 payments, 55 payers, $2.322026-09-13: 402 payments, 51 payers, $2.022026-09-14: 893 payments, 101 payers, $4.742026-09-15: 745 payments, 85 payers, $3.992026-09-16: 748 payments, 90 payers, $3.712026-09-17: 927 payments, 110 payers, $7.022026-09-18: 966 payments, 120 payers, $7.282026-09-19: 555 payments, 70 payers, $4.492026-09-20: 167 payments, 35 payers, $1.082026-09-21: 58 payments, 26 payers, $0.192026-09-22: 513 payments, 79 payers, $5.122026-09-23: 738 payments, 92 payers, $5.472026-09-24: 772 payments, 103 payers, $5.912026-09-25: 900 payments, 96 payers, $8.392026-09-26: 339 payments, 59 payers, $2.812026-09-27: 619 payments, 75 payers, $5.122026-09-28: 303 payments, 49 payers, $2.042026-09-29: 26 payments, 11 payers, $0.112026-09-30: 384 payments, 60 payers, $2.862026-10-01: 939 payments, 116 payers, $7.492026-10-02: 683 payments, 87 payers, $5.922026-10-03: 490 payments, 64 payers, $4.372026-10-04: 569 payments, 71 payers, $4.262026-10-05: 15 payments, 5 payers, $0.08

Payment shape (25 most recent sampled): 25 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).

Peak day 2026-09-18: 966 payments. Last indexed day 2026-10-05: 15. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 70 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 30 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported

Paid verification

✓ verified with real payment — 2026-08-16 $0.005 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/f8d69eba-21f/paid.svg)](https://nohumans.directory/l/f8d69eba-21f)

Badge

verified — nohumans.directory

[![nohumans.directory](https://nohumans.directory/badge/f8d69eba-21f.svg)](https://nohumans.directory/l/f8d69eba-21f)

Machine interface

curl https://nohumans.directory/v1/listings/f8d69eba-21f

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.