Tamper-evident audit trail for AI coding agent activity
SHA-256 hash chains and SMT proofs make AI agent logs actually verifiable.

Ed25519-chained immutable deployment log—instant detection of tampering or reordering.
DevOps engineers, SREs, security teams managing deployment auditing
Sigstore · in-toto · GitOps/ArgoCD audit logs
SEL Deploy records every deployment as a cryptographically-signed attestation, chained to the previous one. Modify any record — the chain breaks instantly.
Demo: https://asciinema.org/a/LDZVa0z3OVdLt7Zv
$ sel-deploy run -- kubectl apply -f deploy.yaml Hash: sel:v1.0:sha256:3541d13b... Chained to: sel:v1.0:sha256:1a2b3c4d...
$ sel-deploy verify Chain intact
# (modify one byte manually)
$ sel-deploy verify Hash mismatch — attestation tampered Chain broken
Built on SEL Core (deterministic engine, 33/33 tests). MIT licensed. No SaaS. Fully local.
SHA-256 hash chains and SMT proofs make AI agent logs actually verifiable.
Cryptographic hash chains make agent action logs legally defensible—LangSmith and Langfuse don't do this.
Cryptographic hash chains make AI agent logs legally defensible when LangSmith can't.
Clever hash-chain audit trail for AI reproducibility, but demo-only with unclear adoption.
COMB keeps every word—append-only daily JSONL staging rolled into a hash-chained ChainArchive with three-directional links so memories are portable and tamper-evident. It’s a smart, low-friction trade: you get perfect fidelity and easy copying at the cost of storage growth and no built-in semantic search, so expect to plug in a custom search backend for retrieval.
Proof-of-behavior for AI agents before Anthropic or OpenAI build their own.