Dekimu · anchored receipts docs
AAR — Anchored Attestation Receipts
Cryptographic proof of a qualified trust service event — eIDAS issuance or revocation of a qualified artefact.
Purpose
An AAR anchors qualified trust service events: the issuance of a qualified electronic signature, seal, timestamp, or certificate, and the subsequent revocation of any such artefact. Each receipt is linked to the issuing Trust Service Provider's entry in the applicable Trusted Services List (TSL).
AAR receipts allow verifiers to confirm that a qualified artefact was valid at the time of issuance and to determine whether it has since been revoked — without querying the TSP directly.
Event types
| Kind | Label | Description |
|---|---|---|
issuance | Qualified issuance | Trust service artefact issued. |
revocation | Qualified revocation | Trust service artefact revoked. |
Key fields
qualified_service_type — the type of qualified trust service: QES (qualified electronic signature), QESeal (qualified electronic seal), QTSP (qualified timestamp), QCert (qualified certificate), or QWebAuth (qualified website authentication).
trust_service_provider — identity of the TSP, including name, country, and TSL identifier. Allows independent cross-referencing against the EU Trusted Lists.
tsl_reference — URI of the specific TSP entry in the applicable Member State Trusted Services List, enabling automated validation of TSP qualification status.
Regulatory context
eIDAS Regulation (EU) No 910/2014 establishes the legal framework for qualified trust services in the EU. Art. 20 requires supervisory bodies to maintain Trusted Services Lists. Art. 24 sets requirements for qualified certificates. AAR receipts provide a verifiable audit trail for qualified trust service operations — complementary to the TSP's own audit obligations — and are particularly relevant in cross-border recognition scenarios under eIDAS Art. 25 (legal effect of qualified electronic signatures).