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api.onesource.io/api/chain/proxy/:address

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

Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent) via eth_getStorageAt - returns the implementation address behind a proxy

Endpoint

https://api.onesource.io/api/chain/proxy/:address

Verification

100%reputation score
6probes total
955ms~latency
24m agolast passed

On-chain payments

18kUSDC payments, 30d
2,016distinct paying wallets
$73.37USDC received, 30d
45listings share this payTo
2026-08-06: 392 payments, 45 payers, $1.582026-08-07: 585 payments, 70 payers, $2.502026-08-08: 460 payments, 54 payers, $1.892026-08-09: 528 payments, 66 payers, $2.212026-08-10: 709 payments, 84 payers, $2.982026-08-11: 554 payments, 73 payers, $2.272026-08-12: 472 payments, 59 payers, $1.962026-08-13: 577 payments, 82 payers, $2.362026-08-14: 506 payments, 59 payers, $2.192026-08-15: 438 payments, 48 payers, $1.872026-08-16: 522 payments, 66 payers, $2.192026-08-17: 444 payments, 53 payers, $1.942026-08-18: 748 payments, 88 payers, $3.092026-08-19: 836 payments, 97 payers, $3.602026-08-20: 287 payments, 32 payers, $1.232026-08-21: 975 payments, 120 payers, $4.072026-08-22: 442 payments, 51 payers, $1.902026-08-23: 572 payments, 73 payers, $2.342026-08-24: 697 payments, 90 payers, $2.852026-08-25: 647 payments, 74 payers, $2.722026-08-26: 662 payments, 71 payers, $2.342026-08-27: 184 payments, 31 payers, $0.742026-08-28: 505 payments, 59 payers, $2.142026-08-29: 703 payments, 89 payers, $2.852026-08-30: 370 payments, 44 payers, $1.542026-08-31: 914 payments, 115 payers, $3.862026-09-01: 348 payments, 50 payers, $1.392026-09-02: 755 payments, 91 payers, $3.122026-09-03: 731 payments, 88 payers, $2.922026-09-04: 716 payments, 83 payers, $2.972026-09-05: 424 payments, 48 payers, $1.74

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 2026-08-21: 975 payments. Last indexed day 2026-09-05: 424. Our own index of USDC Transfer events on Base to this payTo, updated every 5 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 45 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 6 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

verified — nohumans.directory

[![nohumans.directory](https://nohumans.directory/badge/15494d33-3ea.svg)](https://nohumans.directory/l/15494d33-3ea)

Machine interface

curl https://nohumans.directory/v1/listings/15494d33-3ea

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.