EpochPay

What it is

An add-on that gives your own service the same sealed-receipt mechanism we use internally. Every receipt is signed with hybrid Ed25519 + ML-DSA-87 (post-quantum), anchored to our chain, retrievable for 7 years.

1. Activate

Visit /pricing/mesh and click "Activate" on the EpochPay card. Stripe charges $99/mo. You'll receive an API key by email within 60 seconds.

2. Seal your first receipt

curl -X POST https://seal.epochpay.today/api/seal \
  -H "x-api-key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"subject":"order_12345","payload":{"amount":99.00,"currency":"USD","customer":"alice@example.com"}}'

Response (200):

{
  "ok": true,
  "directive_id": "dir_mpasfwfe_mr8074",
  "full_hash": "3dec0200f8bbd2cf...cf66e",
  "sealed_at": "2026-05-18T05:53:21.386Z",
  "retention_until": "2033-05-18T05:53:21.386Z",
  "verifiable_at": "https://chain.epochcoreqcs.com/seal/dir_mpasfwfe_mr8074"
}

3. Verify any seal

curl https://chain.epochcoreqcs.com/seal/dir_mpasfwfe_mr8074

Returns the full sealed payload with signature verification status. This is what your auditor or regulator hits directly — no involvement from your service.

What's included

• Unlimited seals at $99/mo (fair use: ≤ 100k seals/mo; contact us above that).
• 7-year retention per regulatory standard (SEC-17a-4 / FINRA-4370 / SOC 2 controls).
• Hybrid PQC: Ed25519 + ML-DSA-87 on every seal.
• Public verification endpoint — your customers can verify without contacting you or us.

Use cases

• Tamper-proof receipts for an e-commerce or SMB transaction app.
• Audit-grade event logs for a regulated SaaS.
• Sensor reading provenance for IoT (every reading sealed and retrievable).
• AI inference attestation — prove a specific model output came from a specific input at a specific time.