B2B API · Developers

API Reference

Integrate immutable blockchain anchoring into your product with a single POST request. No Solana wallet required — DataMirror handles the transaction on your behalf.

Request API key →How it works

Authentication

All API requests require an x-api-key header. Contact api@datamirror.app to get a key. Each client gets a unique key and a unique memo namespace.

Request header

x-api-key: YOUR_API_KEY

POST/api/anchor

Anchors a certificate or data fingerprint on Solana. DataMirror signs and broadcasts the transaction using a managed keypair — no Solana knowledge required on your end.

Request body

Field	Type	Description
`certId`	string	Your certificate or record identifier (any string)
`hash`	string	SHA-256 hex digest of the data to anchor (64 characters)

Response

Field	Type	Description
`tx`	string	Solana transaction signature (base58)

Verification URL: https://datamirror.app/verify/{tx}

On-chain memo format

Solana Memo Program · namespaced per client

ClariMac:{certId}:{hash64}

Your API key determines the prefix. Custom namespaces available — contact us.

Full example

curl

curl -X POST https://datamirror.app/api/anchor \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "certId": "CERT-2026-001",
    "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
  }'

Response 200

{
  "tx": "4dos5Vxk3EnTN18zmNf4XGCufysuzHuqGbM13iPW1c7gX..."
}

Error codes

Status	Meaning
`200`	Anchored successfully — tx returned
`400`	Invalid JSON, missing certId, or invalid hash format (must be 64-char hex SHA-256)
`401`	Missing or invalid x-api-key
`500`	Solana transaction failed (network issue or keypair misconfiguration)

Health check

GET/api/health

No authentication required. Returns { "status": "ok" } when the API is up.

Verification

Once anchored, any browser can verify the proof at:

https://datamirror.app/verify/{tx}

The page resolves the Solana transaction, parses the Memo, and displays the certificate ID, hash, timestamp, and source — with a "View certificate" CTA linking back to your platform.

Pricing

Self-Serve

Free

No account needed

✓Unlimited proofs

✓Wallet required

✓~$0.001/proof in SOL

✓Shareable verify link

✓PDF certificate

B2B API

Free beta

Paid plans coming soon

✓No wallet required

✓x-api-key auth

✓Webhook on TX confirmed

✓Custom memo namespace

✓Priority support

Ready to integrate?

Send us your project name and use case — we'll provision an API key within 24h.

Request API key →