Interactive Demo

Cryptographic Receipt
Infrastructure

Hazel ingests arbitrary POS payloads, normalizes them into a single receipt schema, signs the canonical payload with ES256, and exposes public verification plus partner access.

Normalize

3 POS providers — Square, Toast, Clover — unified into one schema.

Sign & Chain

ES256 digital signatures with hash-linked chain. Tamper-evident and publicly verifiable.

Monetize

2 partner apps with scoped OAuth tokens for PAR and bulk access.

Demo Walkthrough

Follow these steps to see the complete receipt lifecycle.

Ingest

Submit a raw POS transaction

Inspect

View the signed receipt & proof

Verify

Cryptographically verify authenticity

Tamper

Modify a receipt and watch it fail

PAR

Track same card across merchants

Partners

Mint scoped OAuth tokens

API Endpoints

GET https://api.hazel.bytea.io/.well-known/jwks.json

POST https://api.hazel.bytea.io/v1/ingest/transactions

POST https://api.hazel.bytea.io/v1/verify

GET https://api.hazel.bytea.io/v1/par/:par/receipts

Seeded Partners

Expense Portal

OAuth

expense-portal

receipts.readpar.lookup

Warranty Vault

Server

warranty-vault

receipts.readreceipts.bulkpar.lookup

Cryptographic ReceiptInfrastructure

Demo Walkthrough

Cryptographic Receipt
Infrastructure