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-875F0D38907CEF40 · CANON

22bf0a56eca556191acb3d0d3978f875b5facae14f7222a14b92889f4b24caea

Document · EVT-8E81B89A01ECEB3C · CANON

cac0c5b4600adc067cb2b32c9c74c9a804e7d9e41bac361bf8aa6e45a64a809b

Telemetry Object · EVT-A205D34F3BA9F8F8 · CANON

ca1c213723a0d596414f5e6bf2b076abb7aa52ccd0f43d230696d75a0e0425b1

System State · EVT-F7F4BC02260C820E · CANON

548d86d87b32556761d520c6e409537ee98dd19b11e3f3304716a848ab6a0950

Digital Event · EVT-9AFF9E73ED57A654 · CANON

16a5e1f4a06346d96de8deef004786d8d53b22b331f8e5bb52ba272b482bf47e