μαρτυρία — witness, testimony
Marturia is OpenTelemetry tracing with tamper-evident receipts. Every Claude, OpenAI, or agent action is signed into a hash-chained audit log that you, your customer, or your auditor can verify cryptographically. Multi-party witness cosigning means a compromised provider can’t forge logs after the fact.
What Marturia ships
Three primitives, layered. Every agent action becomes a span; every span gets a signed receipt; every receipt rolls into a Merkle root your auditors’ instances cosign. No third-party SaaS in the trust chain — everything self-hosted, in-house cryptography.
Per-tenant Ed25519 signing keys, HKDF-derived from a master KEK. SHA-256 hash chaining across receipts. Modify any event and every subsequent receipt is invalid — verifiers detect it on the next walk.
Your customers and auditors run their own Marturia instances and cosign your Merkle roots. Sigstore/Rekor pattern, productized. A compromised operator alone can’t rewrite history; quorum forgery requires colluding with every cosigner.
/api/marturia/gl/invoice/1234
returns every span, every agent action, every retry that ever touched that object.
The customer-support and dispute-resolution view no other observability tool has.
60-second integration
Marturia speaks OpenTelemetry on the wire, so existing OTel SDKs Just Work. Point the HTTP exporter at your project’s ingest endpoint, set your project key, and every span you record is signed and chained automatically.
marturia.dev/api/v1/traces# pip install opentelemetry-exporter-otlp-proto-http from opentelemetry import trace from opentelemetry.sdk.trace import TracerProvider from opentelemetry.sdk.trace.export import BatchSpanProcessor from opentelemetry.exporter.otlp.proto.http.trace_exporter \ import OTLPSpanExporter provider = TracerProvider() exporter = OTLPSpanExporter( endpoint="https://marturia.dev/api/v1/traces", headers={"X-Marturia-Key": os.environ["MARTURIA_KEY"]}, ) provider.add_span_processor(BatchSpanProcessor(exporter)) trace.set_tracer_provider(provider) # That’s it. Every span is signed + chained on ingest.
Pricing
Free tier exists so devs can start sending spans the same evening. Paid tiers gate the cryptographic features — you only need them when you have a customer asking you to prove something. Audit tier exists for the SOC 2 / HIPAA buyer who’s comparing us to Vanta.
Early access
Drop your email and I’ll send you the launch link the day Marturia opens for paid signups. No drip-marketing nonsense. One email, one link, one founder writing it.
Or email me directly: [email protected]