About

A proof engine for AI agents.

DarkMatter creates an independent, tamper-evident record of every consequential AI agent action. Each commit is sealed at the moment it happens using a cryptographic hash chain held outside your system. Altering a record after the fact breaks verification for it and for every record that follows, so the change fails against any copy exported beforehand - including a change made by DarkMatter. That is what makes the export worth keeping.

We built DarkMatter because AI agents are now making consequential decisions, and the records of those decisions live inside the same infrastructure that made them. When something goes wrong, the record is controlled by the party being investigated. That is the problem we solve.

Read the docs → Integrity model

How it works

L1

Tamper-evident hash chain

Every commit is SHA-256 hashed and linked to its parent. Modifying any record breaks every downstream hash, detectable by anyone offline.

L2

Timestamp anchor

Checkpoints sign the Merkle root of the log with an Ed25519 key and are delivered to registered witnesses for co-signature. The only witness running today is operated by DarkMatter, so a co-signature does not yet mean the attestation has been checked by anyone else.

L3

Non-repudiation

Commits are signed with a key only you hold before they reach our servers. DarkMatter cannot forge a record on your behalf.

Contact

For questions about the product, integrations, or enterprise deployments, reach us at [email protected].