code402
The Mathematical Verification & Trust Standard for Machine Payments
iban-check$0.005lei-check$0.005vat-mod97-check$0.005balance-check$0.005crypto-ticker$0.01rental-verdict$0.05๐ฌ๐ง Real UK IBAN
๐จ Catch Typo
๐ Apple LEI
๐ง๐ท Brazil CNPJ
๐จ๐ณ China USCC
๐ฏ๐ต Japan Corp
๐ฆ US Fedwire ABA
๐ UK VAT (Mod-97)
๐ฑ SWIFT Savings
๐ก๏ธ Insure $50k
โ
Checksum valid โ structure only (not proof of ownership)
Bank Account (IBAN)
This identifier passed ISO 7064 Mod-97-10 check digits. Structure and checksum only โ it does not prove the account exists or belongs to the named party.
| Standard & Algorithm | ISO 13616 / ISO 7064 Mod-97-10 |
| Input Identifier | GB82WEST12345698765432 |
| Country & Scope | United Kingdom (GB) ยท Checksum offline verifiable |
| XDR-1 Receipt Hash | 0x5ba830012e357aa84d38517fe58df04b947ff7db1709fb431b60897a77315dec |
๐ฑ Settlement Calculator: SWIFT Wire vs. x402 Rail
$50,000.00 USD
CURRENCY:
Our fee, published
from $0.005/call
validation calls; live quotes at /health
Settlement fees
set by facilitators
payer-to-seller on Base; we take no cut
Bank rail fees
set by banks
we publish no estimate for other parties' pricing
28 Deterministic Tools · Reference Implementation
Every endpoint executes offline deterministic algorithms. Neither latency nor cold-start timing is published. Checksum-verifiable vs format-only assurance levels stated transparently.
Bank & Identifier Checksums (Deterministic ISO/MOD)
iban-checkIBAN Check & Wire Fraud Shielddeterministicโ
lei-checkLegal Entity Identifier (LEI) KYB Checkdeterministicโ
vat-mod97-checkVAT Check & Tax Invoicing Shielddeterministicโ
abn-checkABN Check (Australia)deterministicโ
luhn-checkLuhn Check Digit Verifierdeterministicโ
isbn-checkISBN Checkdeterministicโ
sedol-checkSEDOL Check (UK/Ireland Securities)deterministicโ
isin-checkISIN checkdeterministicโ
ean13-checkEAN-13 checkdeterministicโ
gstin-checkGSTIN check (India)deterministicโ
aba-routing-checkABA Routing Number Check (US Fedwire/ACH)deterministicโ
cnpj-checkBrazil CNPJ Check (Cadastro Nacional da Pessoa Jurรญdica)deterministicโ
uscc-checkChina USCC Check (Unified Social Credit Code / ็ปไธ็คพไผไฟก็จไปฃ็ )deterministicโ
japan-corp-checkJapan Corporate Number Check (ๆณไบบ็ชๅท - Houjin Bangou)deterministicโ
Pattern & Business Formats
ein-format-checkEIN Format Check (US)deterministicโ
ifsc-checkIFSC Check (India NEFT/RTGS)deterministicโ
company-number-formatUK Companies House Number Verifierdeterministicโ
swift-bic-checkSWIFT/BIC Structure & Country Code Checkdeterministicโ
e164-checkE.164 International Phone Checkdeterministicโ
kra-pin-checkKenya KRA PIN Check (Kenya Revenue Authority)deterministicโ
rfc-checkMexico RFC Check (Registro Federal de Contribuyentes)deterministicโ
iso4217-currency-checkISO 4217 Currency Standard Check & Settlement Mappingdeterministicโ
Rental Due-Diligence
On-Chain Intelligence & Base L2
settlement-history-checkOn-Chain Counterparty Settlement Historydeterministicโ
balance-checkBase Balance & Solvency Snapshotdeterministicโ
erc20-balanceERC-20 Token Balance Snapshotdeterministicโ
tx-activityTx Activity & Contract Detectiondeterministicโ
block-infoBase Block Header Infodeterministicโ
Composite Verification & Batch
Market Data & Context Distill