The /docs route is now a real landing site (still one self-contained HTML, inline CSS + inline SVG, zero external assets): - One-sentence definition up top: what the LTL is and the cost asymmetry it exists for (one signature + a few hashes in milliseconds vs hours of theorem proving). - THE GRAPHIC: the accumulator itself, rendered server-side from the LIVE log at page load - real leaf hashes, real internal nodes, the real root and signature. Green leaves are boundary-exact verified attestations; grey leaves are the historical audit-failure entries, labeled "kept forever - an append-only ledger does not erase its bad day". The signature box names the dogfood backend and the provider's self-inclusion check (the signature vouches for the code; the tree vouches for the signature's code). - "What do I download?" - exactly three artifacts, numbered, each with what-it-is and where: (1) provider.ed25519.pub, the sole trust anchor, cross-checkable between this site and the GitHub mirror; (2) the attestation = the claim; (3) the receipt = the proof of inclusion. Plus the maximal-benefit path: clone the mirror, run verify.py --all, become a witness. - Three usage lanes (quick check / zero-install audit / autonomous agent), the API, and the means / does-NOT-mean cards. Rendered against the real 8-leaf log and content-asserted in tests' presence. 54/54 green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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| pyproject.toml | ||
| README.md | ||
PACTA Proof Check Provider
This nested project is a prototype third-party proof-checking service. It reuses host Lean/Aeneas infrastructure, runs portable PACTA replay/audit checks, and emits signed attestation certificates.
It does not modify anything outside this repository. It may read configured toolchains such as /Users/oho/GitClone/ClaudeCodeProjects/your-lean-project/aeneas-toolchain/env.sh.
It can also maintain a local transparency log. The log is an RFC 9162-style Merkle accumulator over signed attestations. It emits Signed Tree Heads with Ed25519 today and records an ML-DSA/FIPS 204 signature slot as unavailable unless a real backend is present. Agents that require both signatures must reject such receipts.
Commands
PYTHONPATH=src:provider/src python -m pacta_provider discover
PYTHONPATH=src:provider/src python -m pacta_provider init-key --key-dir provider/state/demo-provider
PYTHONPATH=src:provider/src python -m pacta_provider check \
--config examples/repos.yaml \
--repo-name dalek-ed25519-verified \
--repo repos/dalek-ed25519-verified \
--provider local-pacta-provider \
--private-key provider/state/demo-provider/provider.ed25519.key \
--public-key provider/state/demo-provider/provider.ed25519.pub \
--out provider/out/dalek.attestation.yaml
Transparency log:
PYTHONPATH=src:provider/src python -m pacta_provider log-init \
--log-dir provider/state/transparency-log \
--provider local-pacta-provider \
--public-key provider/state/demo-provider/provider.ed25519.pub
PYTHONPATH=src:provider/src python -m pacta_provider log-append \
--log-dir provider/state/transparency-log \
--attestation provider/out/dalek.attestation.yaml \
--private-key provider/state/demo-provider/provider.ed25519.key \
--public-key provider/state/demo-provider/provider.ed25519.pub \
--out provider/out/dalek.receipt.yaml
PYTHONPATH=src:provider/src python -m pacta_provider log-sth \
--log-dir provider/state/transparency-log \
--private-key provider/state/demo-provider/provider.ed25519.key \
--public-key provider/state/demo-provider/provider.ed25519.pub
The resulting certificate can be consumed by pacta with --attestation, --trust-attestation-provider, and --attestation-public-key.
The receipt can be consumed with --transparency-receipt, --transparency-log-public-key, and --require-transparency-receipt.
The private key must remain provider-side. Downstream agents only need the public key, the inclusion receipt, and a policy decision that the provider name/log key is trusted.