1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf339487a0dfac03232a637128a868181f2bf10b6ebd080b27c6db3227ed582f1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/875a7e6b-9404-4a28-8d9f-340c00cf835a.json and https://artists.proofprofile.net/proofs/artist/875a7e6b-9404-4a28-8d9f-340c00cf835a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missa pulcherrima ad instar Praenestini: Kyrie
Missa pulcherrima ad instar Praenestini: Gloria
Missa pulcherrima ad instar Praenestini: Credo
Missa pulcherrima ad instar Praenestini: Sanctus, Benedictus
Missa pulcherrima ad instar Praenestini: Agnus Dei
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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545c494cda72b425556659499af6195302a44c4c35735f68ec2105b17dc7df3b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEJP1311006.
Missa Concertata La Lombardesca: Sanctus
Missa Concertata La Lombardesca: Benedictus
Missa Concertata La Lombardesca: Agnus Dei
Missa pulcherrima ad instar Praenestini: Sanctus
Canon a 6: I. Tres canones simul cantantur
Pękiel: Masses, Motets & Orchestral Works
Missa pulcherrima ad instar Praenestini: I. Kyrie
Missa pulcherrima ad instar Praenestini: II. Gloria
Missa pulcherrima ad instar Praenestini: III. Credo
Missa pulcherrima ad instar Praenestini: IV. Sanctus
Missa pulcherrima ad instar Praenestini: V. Agnus Dei
Missa senza le cerimonie II: IV. Sanctus
Missa senza le cerimonie II: V. Agnus Dei
Missa Concertata "La Lombardesca": Agnus Dei
Missia Concertata "La Lombardesca": I. Kyrie
Polish Baroque: Pękiel and His Contemporaries
Missia Concertata "La Lombardesca": II. Gloria
Missia Concertata "La Lombardesca": III. Credo
Missia Concertata "La Lombardesca": IV. Et Incarnatus est
Missia Concertata "La Lombardesca": V. Sanctus
Missia Concertata "La Lombardesca": VI. Benedictus
Missia Concertata "La Lombardesca": VII. Agnus Dei