K-Crypto · SHA-256

Native WebCrypto SHA-256 with selectable hash mode and optional local signing. No paid service or API key required.

K-Crypto uses the browser's built-in crypto.subtle engine. Records are chained by previous-record hash. Local hashing / signing is not blockchain, RFC 3161, government, or third-party notarization.

Live Hasher

CANONICAL JSON mode. Deterministic structured hashing (sorted keys). Verification always uses the mode recorded on the receipt.

Canonical form (sorted keys)

{"message":"SignalLink","value":1}

SHA-256 digest · CANONICAL JSON

716ad48a63d204f6696d476d77fe6fc2da50c31ca849796be35092027e543346

256-bit integrity

Signing Identity

No signing identity yet. Signing is optional — the console works fully without it. Generate a local Ed25519 / ECDSA key pair to sign receipts.

Import identity

Engine Capabilities

SHA-256 hashing (WebCrypto crypto.subtle)
CANONICAL JSON + RAW TEXT hash modes
Deterministic canonicalization before hashing
Timestamp generation (ISO 8601, local)
Unique event / anchor IDs (crypto.getRandomValues)
Chained records via previous_hash
Verification by hash recalculation
Tamper detection (HASH MISMATCH)
Optional Ed25519 / ECDSA receipt signing
Signature verification (VERIFIED / INVALID / UNSIGNED)
Downloadable JSON evidence receipts + PDF packs
Local verification of imported receipts

Local Chain Hashes

AI Response · EVT-B6B0C138B27C8CCA · CANON

cd42dd1c0747fdd59ab3106271fedd8b50fe831e65e621be338b930f83246298

Document · EVT-1391DEB7D2AE320B · CANON

822d3fff43fc9e0cf698e598762076ade6bbbbd882a5c3b0e4a675bffc687450

Telemetry Object · EVT-952EB031DF588E82 · CANON

c9cdd5f1074701ed7ac269e48f1601f30f83c90582767a20f4cf7694f38cb041

System State · EVT-8AB89E32FD16D911 · CANON

50b28e7acc785db5c3520f843e3bbe71d1906e389e88b88303c50afc01d95085

Digital Event · EVT-655416D9149290FC · CANON

7559829d214ebc5805f977f2723d8fc3425fec9fa2a3d42fa5b768a86607171c