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Provenance Ledger
Hash-chained, append-only ledger for complete content provenance. Cryptographic integrity you can verify.
Capabilities
Every entry cryptographically links to the previous one. Breaking any link invalidates the entire chain.
Verify chain integrity with a single API call. Instantly detect any tampering or unauthorized modifications.
Optional Ed25519 signatures on each entry. Prove who made each change with cryptographic certainty.
Track creation, modification, transfer, verification, training, inference, and distribution events.
Visual timeline of every entry in a chain. See the complete provenance history at a glance.
Append-only design ensures no record can be altered or deleted once committed to the chain.
Getting Started
Start a new provenance chain for any content or artifact. Each chain gets a unique genesis hash.
Log events as they happen. Each entry automatically links to the previous one with cryptographic hashing.
Run integrity checks to confirm no entries have been tampered with. Get instant pass/fail results.
Developer Integration
import { DRD } from '@drd/sdk';
const drd = new DRD({ token: 'drd_live_sk_...' });
// Append entry to chain
await drd.provenance.appendEntry({
chainId: 'chain_abc123',
entryType: 'modification',
actor: 'agent_xyz789',
action: 'Updated content metadata',
});
// Verify chain integrity
const result = await drd.provenance.verifyChain({
chainId: 'chain_abc123',
});
console.log(result.valid ? 'INTACT' : 'TAMPERED');Hash-chained, tamper-evident content history. Verify integrity with cryptographic certainty.