Every AI decision backed by cryptographic proof. Ed25519 signatures, canonical JSON serialization, and independently verifiable receipts make AI governance mathematically certain—not just procedural.
Industry-standard primitives, zero proprietary magic
Elliptic curve signatures (Curve25519) for every AI decision. FIPS 186-5 compliant, resistant to side-channel attacks.
256-bit security • 64-byte signaturesRFC 8785 canonical JSON serialization ensures identical byte-level representation. Hash collisions mathematically impossible.
Deterministic • Sortable • VerifiableFIPS 180-4 secure hashing for request/response bodies. Detects any tampering down to a single bit.
2^256 collision resistance{
"version": "1.0",
"id": "proof_2NvZvk9K3xRqJ8mP7nQwY",
"timestamp": "2024-10-25T18:42:33.847Z",
"request": {
"method": "POST",
"path": "/v1/chat/completions",
"hash": "8f4a7c9d2e1b3f6a..."
},
"policy": {
"decision": "allow",
"policy_id": "ciso_v2_restricted",
"rules_matched": ["pii_filter", "cost_limit"]
},
"response": {
"status": 200,
"hash": "3b2f8e1a9c4d7f2e...",
"model": "gpt-4o"
},
"signature": {
"algorithm": "Ed25519",
"public_key_id": "railguard_prod_2024",
"value": "A3F7E8D9C2B1F..."
}
}Don't trust us—verify cryptographically. Use our CLI or any Ed25519 library.
npm install -g @railguard/verifyrailguard verify receipt.json✓ Signature valid
✓ Timestamp authentic
✓ Policy hash matchesUse any Ed25519 library in your language of choice:
cryptographytweetnaclcrypto/ed25519ed25519-dalekhttps://railguard.ai/.well-known/public-keys/Once signed, neither you nor we can deny a decision occurred. Perfect for regulatory disputes.
Any modification to timestamp, decision, or policy invalidates the signature instantly.
External auditors can verify receipts without access to our systems or databases.
Receipts remain verifiable decades later—no proprietary formats or vendor lock-in.
Cryptographic proofs accepted as evidence in EU courts under eIDAS regulation.
Don't trust Railguard—verify every receipt independently. That's the point.
Deploy Railguard Gateway and start generating verifiable proof receipts in 15 minutes. Verify independently with our CLI or any Ed25519 library.