Marturia is a cryptographic audit and observability platform designed to provide tamper-evident evidence for every decision made by AI agents. Addressing requirements such as those outlined in the EU AI Act for automatic, immutable logging and provable human oversight, Marturia generates cryptographically signed, hash-chained, and Merkle-anchored receipts for every agent action. These receipts are further cosigned by multiple parties, ensuring that a single compromised operator cannot rewrite audit history without collusion among all cosigners.
The platform operates entirely self-hosted, relying on in-house cryptography without third-party key management or cloud signing services. Each agent action is recorded as a span, which receives an Ed25519-signed receipt. These receipts are chained using SHA-256 hashes and aggregated into Merkle roots, which are then cosigned by a quorum of witnesses running independent Marturia instances. This structure allows auditors and customers to independently verify the integrity of logs and audit trails, with any tampering immediately detectable through the verification process.
Marturia integrates with OpenTelemetry, enabling organizations to use their existing SDKs and exporters. By pointing the OpenTelemetry HTTP exporter at the Marturia ingest endpoint and providing a project key, every span generated within an application is automatically signed and included in the tamper-evident chain. The system supports features such as live tailing of streamed spans, Sentry-style issue grouping with PII redaction, per-customer and per-model LLM spend tracking, and comprehensive agent module views that display end-to-end traces, tool calls, and token usage.
Verification is facilitated by an open-source Python package, marturia-verify, available on PyPI. This offline verifier allows auditors to independently walk and validate receipt chains and Merkle roots without relying on Marturia's infrastructure. The platform is intended for organizations, auditors, and compliance teams seeking robust, cryptographically secure audit evidence for AI decision-making processes.
marturia-verify sits in PulseGate's Observability & monitoring category. It focuses on verifying cryptographic audit receipts for transparency and compliance, including EU AI Act oversight. It is built as an open-source project for developers and compliance engineers. marturia-verify is open source under the MIT license. The product ships for the web, the command line, and API, and it can be self-hosted.
Behind marturia-verify is Seppapath / Open Source Maintainers, and the product first shipped in 2026. Key capabilities include audit receipt verification, HTTP SDK, and cryptographic validation.
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