On-chain records with one API call

Canton Infrastructure

Production Canton validator on Global MainNet. Record actions write immutable Daml contracts; the facilitation flow exercises Splice’s audited Amulet and Canton Token Standard choices over the Ledger API — ccledger does not reimplement transfer, escrow, or settlement logic. Spring Boot backend, PostgreSQL, gRPC + JSON Ledger API. Backed by the Blueprint index — every Canton Coin transaction since the network’s June 2024 genesis, typically seconds behind the head of the chain.

Non-Custodial & Secure

ccledger is non-custodial — enforced in code. Prepaid CC is a non-refundable fee credit that pays per-action fees only and never funds on-chain value movement; there is no withdrawal endpoint, and ccledger never holds your CC as a spendable balance. You keep your Loop wallet and keys. Every live action returns a verifiable on-chain proof. API key authentication, rate limiting, and security headers on every response.

How to Use ccledger

Two paths for developers. The Community API for self-service payments and records, or admin-provisioned enterprise integration for high-volume ledger submission. Both settle on Canton MainNet.

Record actions (attest, attest-mutual, mint) create immutable on-chain records. Every live response returns an on-chain proof — contract ID, update/transaction ID, and ledger offset. Sender-signed value movement via the delegated facilitation flow (transfers only) is live.

Get Started in Seconds

Register for an API key, record on-chain, and quote fees before you spend. No Canton node, no wallet setup, no blockchain experience required.

# 1. Register — 50 trial record actions included, no payment needed
curl -X POST https://ccledger.xyz/api/v1/community/register \
  -H "Content-Type: application/json" \
  -d '{"appName":"my-app"}'

# 2. Record an attestation — uses a trial credit (no CC required)
curl -X POST https://ccledger.xyz/api/v1/community/attest \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"appName":"my-app","dataHash":"abc123","description":"My first record"}'

# 3. Quote any fee before spending — read-only, no side effects
curl -X POST https://ccledger.xyz/api/v1/community/quote \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"actionType":"attest"}'

{
  "actionId": "8f41d9c2-5b7e-4c1a-9d3f-2e8a6b0c4f17",
  "actionType": "attest",
  "status": "confirmed",
  "appName": "my-app",
  "dataHash": "abc123",
  "mintedAt": "2026-08-05T07:41:22Z",
  "proof": {
    "contractId": "0043a1…9be2",
    "transactionId": "1220c47d…88aa",
    "ledgerOffset": 1834211,
    "synchronizerId": "global-domain::1220…",
    "effectiveAt": "2026-08-05T07:41:22Z"
  },
  "rewardMarkerCreated": false
}

Full documentation at /docs/ · Interactive API explorer at /api-docs/ · OpenAPI spec at /openapi.json