1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa813e893e81706ed500cd3d9536acfc2f0a70ba6cff352fbdcec971a536d5c35. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5972099-2372-40a3-b76a-396d6b5fbc76.json and https://artists.proofprofile.net/proofs/artist/f5972099-2372-40a3-b76a-396d6b5fbc76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
10 décembre : Nue et couronnée de chandelles lumineuses - un calendrier de l'Avent érotique
16 décembre : Livraison de Noël avec un gros cadeau - Un calendrier de l'Avent érotique
16 de diciembre: El gran extra de Navidad - un calendario erótico de Navidad
10 de diciembre: Desnuda con velas en el pelo
10. Dezember: Nackt und mit Licht im Haar – ein erotischer Adventskalender
10. joulukuuta: Alastomana kynttilät hiuksissa – eroottinen joulukalenteri
December 10: Naked Lucia – An Erotic Christmas Calendar
10 december: Het vrouwenkoor – een erotische adventskalender
16. Dezember: Weihnachtsbringdienst mit dem gewissen Extra – ein erotischer Adventskalender
16 december: Kerstlevering met nét dat beetje meer – een erotische adventskalender
December 16: A Special Christmas Delivery – An Erotic Christmas Calendar
16. joulukuuta: Jouluinen erikoistoimitus – eroottinen joulukalenteri
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b2bc5d628e660ea7e908b85c3123a66696f9e84eb6aa16249ddf9ce3e73b79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRDE2100020.
Where Are You Christmas (feat. Sarah Schmidt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5a6c3368da75e6b4dee705c60a013f6c230bdfa9cfddc0a87f5e90380bf749. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91201621.