ChainOfFact
A neutral, append-only evidence system for AI and software.
What can be proven, after the fact, without trusting the operator?
What It Does
- Records events as cryptographic facts
- Hashes and timestamps them at ingestion
- Preserves records immutably
- Provides independent verification
- Preserves absence explicitly (UNKNOWN)
What It Refuses to Do
- Judge correctness
- Claim safety or compliance
- Score risk or trust
- Infer missing information
- Narrate meaning
When It's Used
ChainOfFact produces artifacts designed to survive scrutiny by regulators, courts, journalists, and time.
Direct Answer
ChainOfFact is an append-only evidence system that records cryptographic facts about AI and software execution without interpretation, scoring, or inference.
What ChainOfFact Records
ChainOfFact records execution events as immutable cryptographic facts. Each fact is hashed with SHA-256, chained to the previous fact, and stored in an append-only ledger that cannot be modified after the fact is written.
What ChainOfFact Refuses to Do
ChainOfFact does not interpret events, score outcomes, certify compliance, claim safety, or infer meaning from missing data. It records what occurred and preserves UNKNOWN for what was not provided.
Who Uses ChainOfFact
ChainOfFact is used by legal teams during discovery, by compliance officers during regulatory audits, and by engineering teams during post-incident investigations requiring tamper-evident event records.