CertChain — Certificate Verification

Verify a Certificate

Enter a certificate ID or upload a signed JSON proof to verify that the certificate exists and is valid on the blockchain.

Certificate ID

Or upload proof (JSON)

Integration notes:

Replace /api/verify?cid=... in verify() with your backend or on-chain indexer endpoint.
Wallet connect button should call a real Web3 provider (MetaMask, WalletConnect).
Store only hashes on-chain; verify certificate data by hashing and comparing on-chain.

Sample Certificate

John Doe

Professional Certificate — Blockchain Fundamentals

ID: cert_2025_0001_abc123

Issued: Jan 22, 2025

Issuer: Cert Academy

Verification API (placeholder)

GET /api/verify?cid=<certificate_id>

Response (example):

{
  "cid": "cert_2025_0001_abc123",
  "status": "valid",
  "issuedAt": "2025-01-22T10:00:00Z",
  "issuer": "Cert Academy",
  "onChainTx": "0xabc..."
}