Evidence integrity infrastructure for compliance and audit workflows.
TrustSignal issues signed verification receipts so organizations can prove when evidence was created, where it came from, and whether it has changed - without replacing the system that collected it.
Compliance and audit teams rely on artifacts that pass through multiple systems. Without a durable integrity reference, provenance becomes difficult to validate during later review.
TrustSignal adds an integrity layer at the handoff point:
- Signed verification receipts - issued at artifact ingestion, binding hash, source, control, and timestamp
- Verifiable provenance - source metadata travels with the receipt from the start
- Later integrity checks - compare the current artifact against the original receipt before audit review
- Tamper detection - mismatch signals surface when a record no longer matches intake state
- No workflow replacement - fits alongside Vanta, Drata, and existing GRC platforms via a clean API boundary
POST /api/attest-evidence
{
"source": "vanta",
"artifact_hash": "sha256:93f6f35...",
"control_id": "CC6.1",
"timestamp": "2026-03-11T21:00:00Z"
}
-> Returns a signed receipt with verification signal and provenance metadata
-> Store receipt alongside the artifact
-> Verify again later when trust conditions matter
| Use Case | How TrustSignal Fits |
|---|---|
| Compliance evidence pipelines | Attests artifacts at ingestion, returns signed receipts |
| Audit-readiness workflows | Provides tamper-evident reference for later review |
| GRC platform integrations | Sits behind Vanta, Drata, or internal collectors |
| Security and partner review | Public API contract, claims boundary, and threat model available |
| Resource | Description |
|---|---|
| Developer Docs | Verification lifecycle, API overview, architecture |
| API Overview | Public request and response model |
| Security Model | Claims boundary and public-safe controls |
| Threat Model | Threat assumptions and review posture |
| Architecture | Workflow fit and trust-boundary framing |
TrustSignal provides signed verification receipts, verification signals, and verifiable provenance metadata.
TrustSignal does not provide legal determinations, compliance certification, fraud adjudication, or replacement for the system of record.