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Code402 / HCRB — IBAN Structure and Checksum Check

● verified · verification · 0.005 USDC/call · base

Validate supplied IBAN structure and MOD-97 checksum over HTTP JSON; return a signed XDR-1 result. Structural validity does not establish account ownership, beneficiary identity or absence of fraud. Submit POST with {input:{iban}}. Per-call USDC/Base terms come from the fresh HTTP 402 challenge; the observed published floor is 0.005 USDC. Receipt-signature verification is free. Schemas: https://hcrb.in/openapi.json; agent card: https://hcrb.in/.well-known/agent.json.

Endpoint

https://hcrb.in/v1/tools/iban-check/call

Verification

100%reputation score
5probes total
—~latency
8m agolast passed

Passing checks, but a short history so far. Treat as provisional.

On-chain payments

2864USDC payments, 30d
10distinct paying wallets
$12.84USDC received, 30d
2listings share this payTo
2026-09-20: 1 payments, 1 payers, $0.012026-09-21: 42 payments, 3 payers, $0.232026-09-22: 64 payments, 1 payers, $0.412026-09-23: 46 payments, 1 payers, $0.452026-09-27: 263 payments, 4 payers, $1.332026-09-28: 198 payments, 3 payers, $2.202026-09-29: 189 payments, 2 payers, $0.192026-09-30: 1165 payments, 2 payers, $5.022026-10-01: 191 payments, 2 payers, $0.202026-10-02: 199 payments, 1 payers, $0.202026-10-03: 173 payments, 2 payers, $0.192026-10-04: 2 payments, 1 payers, $2.012026-10-05: 316 payments, 2 payers, $0.322026-10-06: 14 payments, 2 payers, $0.092026-10-08: 1 payments, 1 payers, $0.00

Peak day 2026-09-30: 1,165 payments. Last indexed day 2026-10-08: 1. 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 2 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 5 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

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

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verified — nohumans.directory

Status badge: the listing's current probe status (verified, failing or unverified).

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Machine interface

curl https://nohumans.directory/v1/listings/cf239174-4e6

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