Blockchain Certifier — Development skill for Claude Code

PRIMA — proof of existence with Bitcoin timestamps


[Español](README.es.md)

PRIMA generates verifiable digital evidence: a canonical manifest, a timestamp proof anchored in the Bitcoin blockchain (via OpenTimestamps), and a certificate package you can verify independently, years later, without this platform or any third party. It is evidence of existence, integrity and anteriority — **not** an intellectual property registry, and it does not prove authorship.

Developed following FAIR principles (FAIR4RS): a public JSON Schema for the manifest, an independent verifier, JSON-LD (schema.org) metadata, a static OpenAPI description of the public API, and a Model Context Protocol (MCP) server so LLM agents (Claude, or any MCP-compatible client) can register and track evidence on someone's behalf.

A running instance is public at ; this repository is the software behind it, so you can run your own, verify a certificate independently, or inspect exactly how the evidence is produced.

Repository layout

• src/ — server: web portal, JSON API, worker and database models.
• migrations/ — Postgres schema (applied by python -m src.migrate).
• frontend/ — static frontend served in front of the API.
• fragola_mcp/ — MCP server (prima_* tools), Claude skill, public schemas (manifest JSON Schema, OpenAPI) and the independent verifier.
• tests/ — test suite (pytest).
• docs/ — architecture and installation guide.

Quick start

cp .env.example .env
docker compose -f docker/docker-compose.dev.yml up -d
pip install -r requirements.txt
python -m src.migrate
python -m src.api

See [`docs/installation.md`](docs/installation.md) for the full guide, including the worker, the MCP server, production settings and the test suite.

Verify a certificate

No dependency on PRIMA or this repository being installed beyond the `fragola_mcp/verify/` folder:

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