Developer API

REST + gRPC + WebSocket. Signed webhooks. SDKs for TypeScript, Python, Go, and Java.

Requests / minute

+8%

4,120

p95 latency

-4ms

112ms

Active API keys

Error rate

-0.01%

0.04%

Quickstart

anchor an event in 3 lines

import { LedgerCore } from "@ledgercore/sdk";

const ledger = new LedgerCore({ apiKey: process.env.LEDGER_KEY! });

const proof = await ledger.anchor({
  type: "BATCH_RELEASE_APPROVED",
  actor: "quality.director",
  payload: batchRecord, // hashed client-side
});

console.log(proof.hash, proof.block, proof.merkleRoot);
// 0x8f3a29c1…c21e  8412907  0x7fa2b1…c001

Webhooks

signed with Ed25519

erp.northwind.io/hook

anchor.*

compliance-tool.io/lc

credential.revoked

slack.com/services/…

tamper.detected

Endpoints

v1 · REST

Method	Path	Description	RPS
POST	/v1/anchor/event	Anchor a business event	220
POST	/v1/notarize	Notarize a document hash	42
POST	/v1/credentials/issue	Issue a verifiable credential	18
POST	/v1/credentials/revoke	Revoke a credential	2
GET	/v1/verify/:proof	Verify a proof by hash	640
GET	/v1/trace/:productId	Return product provenance	88
POST	/v1/oracle/attest	Submit oracle attestation	120
GET	/v1/compliance/report	Framework evidence bundle	6

API keys

active credentials

prod-erp-connector

last used 12s ago · 2.4M requests

anchor:write

sk_live_••••…9f04

cred-studio-web

last used 1m ago · 48k requests

credentials:*

sk_live_••••…9f04

public-verifier

last used just now · 18M requests

verify:read

sk_live_••••…9f04

auditor-firm-ka

last used 22m ago · 14k requests

compliance:read

sk_live_••••…9f04