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 0x74a8ad9cd3616af5b170f4f0ccf395153475107f7303c9d968f52d55d9cefaae. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db69658a-e230-4308-bced-77f2efa92f33.json and https://artists.proofprofile.net/proofs/artist/db69658a-e230-4308-bced-77f2efa92f33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf530a73e88b05103f6a1e5716062ab92f3227ec750a7012b072544e81877976b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GB3VA0900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94f427ce4c3fcaaf0c248a9a11e04b834b6e3100a22691a969e038aea2ff00. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB3VA0900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3cde7a12d90b7991d030787c3b12f661810be5ac02504733e86a8a4a1de24c. 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/GBBBA0220020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3474bdd3065164bd35da9bfeae8f92d00806a160577c71b3c3a68ade5612f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBBB2015401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de28e6266bc03c2e7848384935120eb145f0c26b050c381212e3e4d64e16d25. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBBA0320190.
Bizet: Les pêcheurs de perles - The Pearl Fishers' Duet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f041d6d9def5f47e5b8ae2d054262b67c5e3104df3733e97d433c59987cc4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBBBA0240601.
Leoncavallo: Pagliacci / Act 1 - "Vesti la giubba"
Puccini: Tosca / Act 1 - "Recondita armonia"
Soave sia il vento - From Cosi fan Tutte
Symphony No.29 in A, K.201: IV. Allegro con spirito
Serenade No.10 in B-Flat Major, K.361, "Gran Partita": III. Adagio
Smanie implacabili - From Cosi fan Tutte
Piano Concerto No.21 in C Major K.467, "Elvira Madigan": II. Andante
Horn Concerto No,4 in E Flat: III- Rondo
Symphony No.39 in E flat, K. 543: IV. Finale (Allegro)
Volgi a me (from Fra gil amplessi) - From Cosi fan Tutte
String Quintet No,3 in G minor, K.516: III. Adagio ma non troppo
Una donna quindici anni - From Cosi fan Tutte
Fortunato - Act II Finale - From Cosi fan Tutte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaed24e9bc06db4cb5fd25f27e81806484d04bcddabb03ac9e66a21945a5d613. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSM11104457.