Documentation
What is Flowhash
Flowhash is an open primitive for cryptographically anchored attestations. It standardizes how claims are structured off-chain, canonically hashed, and minimally anchored so any party can verify who made a claim, in what structure, and when.
What is this registry
The first official public registry operated by the Flowhash Foundation. It is a reference public instance, not the only possible one. The protocol supports multiple independent nodes.
Certification
A Flowhash Certified Site has its registration data cryptographically hashed (SHA-256 of canonical JSON) and recorded in the hash-chained event log. Certification is a registry state, not a truth claim. It does not imply endorsement.
Verification
Every mutation creates a hash-chained event. Each hash includes the previous hash, forming a tamper-evident chain. Events are batched into daily Merkle trees. Any party can verify inclusion without downloading the full log.
Certexi
Certexi is a separate commercial entity that builds enterprise workflow integration on top of Flowhash. It is the first enterprise-grade platform built on the protocol. This registry is operated by the Flowhash Foundation, not by Certexi.
API
| Method | Endpoint | Auth | Description |
|---|---|---|---|
| GET | /api/v1/sites | Public | List sites |
| GET | /api/v1/sites/:slug | Public | Site detail |
| GET | /api/v1/operators | Public | List operators |
| GET | /api/v1/operators/:slug | Public | Operator detail |
| GET | /api/v1/events | Public | Event log |
| POST | /api/v1/verify | Public | Verify hash |
| GET | /api/v1/health | Public | Health check |
| POST | /api/v1/sites | Admin | Register site |
| POST | /api/v1/operators | Admin | Register operator |
| POST | /api/v1/certifications | Admin | Issue cert |