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How it works · Traces

How Traces works.

Group events, documents and AI attestations into one sealed record of a whole process. This page covers the mechanism: what happens to a request, what is signed, and how someone outside your company checks it.

Read the docsProduct page
sha-256 · 3a352297…2592
sha-256 · 6be98f12…d283
Traces filling and sealing, livePOST /v1/traces
acme.com · tracesLive
3 rows · a sealed trace rejects new items
The path of a request
  1. 01 · SendOpen a traceCreate it with a label
  2. 02 · ProcessAttach recordsPass trace_id when you post events, documents or attestations
  3. 03 · SignSealInvoance orders the items by time and computes SHA-256 over their hashes, then signs the result
  4. 04 · VerifyShare the proofExport JSON or PDF, or make the proof page public
Step by step
  1. Open a trace

    Create it with a label. You get a trace_id.

  2. Attach records

    Pass trace_id when you post events, documents or attestations.

  3. Seal

    Invoance orders the items by time and computes SHA-256 over their hashes, then signs the result.

  4. Share the proof

    Export JSON or PDF, or make the proof page public.

Technical factsAPI reference
Composite hashSHA-256(h1 ‖ h2 ‖ … ‖ hN), chronological
SealEd25519 signature over the canonical seal payload
After sealingNew items are rejected with 409 trace_sealed
ProofGET /v1/traces/{id}/proof and /proof/pdf
Empty tracesCannot be sealed

How a third party verifies

Verification does not need an Invoance account or access to your systems. The verifier recomputes the hash from what they hold and compares it with the signed record.

  1. 01 · AnyoneOpens the proof linkNo account, no dashboard access
  2. 02 · CheckRecompute the hashSubmitted payload against anchored hash
  3. 03 · Resultmatch_result: truePlus issuer domain and signing time

Try it against a real record.

Open the verifier, or create a record of your own on the free plan.

Open the verifierAll mechanisms

Verified documents and records. Invoance records the exact version of every invoice, report and notice your company sends, so the people who receive them can confirm they have the version you sent, without taking your word for it.

Products

  • Evidence Rooms
  • Audit Logs
  • Event Ledger
  • AI Attestation
  • Document Anchoring
  • Traces

Developers

  • Documentation
  • API reference
  • SDKs
  • How it works
  • How traces seal
  • System status

Verify

  • Audit Log
  • Event
  • AI Attestation
  • Document
  • Trace

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