APIs / API 01
Article 50 Attestation API
Per-interaction cryptographic attestation for Article 50(1) interaction disclosure. Every receipt is Merkle-anchored and RFC 3161-timestamped. Article 50(2) synthetic-content marking ships in v1.1 (Q4 2026).
A regulator inquiry resolves to a signed Merkle proof in minutes.
Included in Agency Pro & Enterprise
Patent-pending
Request
POST /v1/attestation
bashRequest
curl -X POST https://api.audact.ai/v1/attestation \
-H "Authorization: Bearer $AUDACT_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"interaction_id": "call_8h2k9d7",
"modality": "voice",
"article_50_clause": "1",
"disclosure_method": "spoken_intro",
"agent_identity": "ai_agent_v3",
"jurisdiction": "DE",
"subject_hash": "sha256:e3b0c44..."
}'Response
200 OK · signed receipt
jsonResponse
{
"receipt_id": "rcpt_01HX7K9M3P4Q5R6S7T8U9V",
"merkle_root": "0x4a7d1ed414...",
"merkle_proof": [
"0x1b2c3d4e...",
"0x5f6a7b8c...",
"0x9d0e1f2a..."
],
"rfc3161_timestamp": "2026-08-02T10:14:23.412Z",
"tsa": "https://tsa.audact.ai",
"signature": "ed25519:ba7816bf8f01cfea...",
"verifier_url": "https://verify.audact.ai/rcpt_01HX7K9M3P4Q5R6S7T8U9V"
}Use cases
Voice agents
Inbound and outbound AI calls. Attestation at session-start and per significant turn.
Chat widgets
Every AI-generated message marked with an Article 50(1) receipt.
AI sales reps
Synthetic-voice product walkthroughs. Article 50(2) provenance marking arrives in v1.1 (Q4 2026).
Included in Agency Pro & Enterprise.
Included in Agency Pro & Enterprise — book a call and we'll scope it with you. 1,000 events/day rate-limit. Production gated by domain + entity verification.