ELYDORA
ELYDORA LEDGER

The evidence chain.
For every agent action.

Elydora Ledger is the core responsibility evidence chain layer. Every covered operation produces a signed, tamper-evident, chain-linked record with a verifiable Elydora Acknowledgment Receipt (EAR).

VISUALIZATION: EVIDENCE_CHAIN
MODE: SEQUENTIAL
Capabilities
01

Signed Operation Records

Every agent operation is signed with Ed25519, canonicalized via JCS (RFC 8785), and hashed with SHA-256. Each record is cryptographically chained to the previous operation via the Elydora Chain Hash (ECH).

02

Acknowledgment Receipts

Every accepted operation receives an Elydora Acknowledgment Receipt (EAR), a platform-signed admission receipt carrying the server timestamp, chain position, and receipt hash.

03

Edge-Fast Admission

Write-path validation runs at the edge on Cloudflare Workers: signature verification, nonce check, chain head update, and receipt signing complete before the response.

04

Durable Persistence

Accepted operations persist through an async queue: D1 for indexed queries and R2 for the canonical evidence objects.

05

Chain Integrity

Per-agent chain heads keep sequence numbers monotonic and reject a mismatched prev_chain_hash: no gaps, no forks.

06

Legal Evidence Grade

Every record is structured for legal admissibility under FRE 901/902. Evidence packages include process documentation, certification workflows, and chain verification.

Technical Specifications
RECEIPT
Signed EAR
SIGNATURE
Ed25519
HASH
SHA-256
CHAIN
ECH
Integration
import { ElydoraClient } from '@elydora/sdk';

const client = new ElydoraClient({
  orgId: 'org_acme',
  agentId: 'agent_underwriter',
  privateKey: process.env.ELYDORA_KEY,
});

// Create and submit an operation record
const record = client.createOperation({
  operationType: 'loan.approve',
  subject: { id: 'borrower:BRW-2026-0042', type: 'borrower' },
  action: { decision: 'approve', loanId: 'LN-2026-001', amount: 50000 },
});

const { receipt } = await client.submitOperation(record);
// receipt is the Elydora Acknowledgment Receipt (EAR)
console.log(receipt.chain_hash);  // Elydora Chain Hash
Standards Compliance
Ed25519 (RFC 8032)SHA-256 (FIPS 180-4)JCS (RFC 8785)FRE 901/902

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