Live log · TACET spec · Whitepaper · For LLMs · Canon
Every hour, a public randomness beacon opens an epoch. TACET fetches the model cards of the AI systems under watch, runs a published predicate over the bytes — does this card name its training data? — signs each answer, commits them all to a sparse Merkle map, and anchors the hour in Bitcoin. When a lab stays silent about training data, the silence becomes a proof anyone can verify offline.
Crovia states observation facts, bounded by two public clocks. It never asserts intent.
pip install -e countersign/tacet/reference/python -e crovia-seal/reference/python -e countersign/tacet/operator
curl -sO https://croviatrust.com/registry/data/tacet/proofs/mistralai__Mistral-7B-v0.1.seal.json
tacet-operator verify mistralai__Mistral-7B-v0.1.seal.json # recomputes roots, drand, Bitcoin anchors, signatures| countersign | TACET: specification, reference implementation, conformance vectors, the live operator, the canon and the site sources. Start here. |
| crovia-seal | The Crovia Seal (crovia.seal.v1): tamper-evident, offline-verifiable receipts for AI outputs. IETF Internet-Draft. Every TACET proof is a Seal. |
| crovia-core-engine | The 2026 archive substrate (collectors, signed envelopes, batch seals, anchors). Observation paused 2026-06-01; data stays public. |
| crovia-evidence-lab | Public data exports of the archive, CC-BY-4.0. |
| causari | Sibling product: causal provenance of what AI agents do to a codebase. Same Seal, different subject. |
| Crovia | Causari | |
|---|---|---|
| Watches | what AI providers disclose about training data | what AI agents do to your codebase |
| For | regulators, litigators, journalists, the public | software developers |
| Output | TACET silence proofs, LACUNA certificates | causal provenance of code edits |
| Home | croviatrust.com | causari.dev |
This account does not open issues, pull requests or discussions on repositories outside
croviatrust/*. An automated outreach experiment in early 2026 was stopped and will not
resume. If you received an unsolicited issue from us, we apologise — write to
info@croviatrust.com.
Independent · no vendor money · code Apache-2.0 · specs CC0 · data CC-BY-4.0 · info@croviatrust.com