Add Python binding for PoT generation and verification

[Heime-Jorgen]

Summary

OpenTTT currently ships a TypeScript/Node.js SDK. A Python binding would open the library to the data science and ML/AI agent ecosystem, where Python is dominant.

Scope

• Wrap generatePot() and verifyPotSignature() from the openttt npm package — or implement the same protocol in pure Python
• Target: openttt PyPI package or openttt-python GitHub repo under Helm-Protocol
• Must match the TS SDK output format (PoT JSON structure)

Acceptance Criteria

• pip install openttt (or openttt-python)
• pot = generate_pot(agent_id="...", sources=[...]) returns valid PoT dict
• verify_pot_signature(pot_hash, signature) returns bool
• README with usage example

References

• TypeScript SDK: src/pot_signer.ts
• PoT JSON schema: src/time_synthesis.ts
• Ed25519 signing uses @noble/ed25519 — Python equivalent: cryptography or PyNaCl

Difficulty

Medium — requires understanding the PoT structure and Ed25519 signature format. No blockchain knowledge needed.