All computation runs locally in your browser. CUSIP validation, routing number checks, SHA-256 hashing, Base64 encoding. No data ever leaves your device. No account required. No server involved.
Validate CUSIP identifiers using the ANSI X9.6 check digit algorithm. Verifies the MOD-10 check digit. Works for CUSIP (9 chars) and CINS (9 chars).
🔒 Computed locally — zero network requests
Validate credit card numbers, IMEI codes, and other identifiers using the Luhn MOD-10 algorithm. Detects single-digit errors and most transpositions.
🔒 Computed locally — zero network requests
Validate ABA routing transit numbers (9 digits). Uses the checksum formula: 3(d1+d4+d7) + 7(d2+d5+d8) + (d3+d6+d9) mod 10 = 0.
🔒 Computed locally — zero network requests
Generate SHA-256 hash of any text or document content. The same hash algorithm used by Bitcoin and Triple-Forged document anchoring.
🔒 Computed locally — zero network requests
Encode or decode text to/from Base64. Useful for document content transfer, API headers, and data URIs.
🔒 Computed locally — zero network requests
Look up CUSIP ↔ FIGI ↔ ISIN cross-references via OpenFIGI API. Free, no key required. Identifies the underlying security behind any identifier.
🌐 Uses OpenFIGI API (openfigi.com) — free, no key
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Forged on Chain LLC is not a law firm and does not provide legal advice. Our products are self-help document preparation tools. Consult a licensed attorney for legal advice specific to your situation.