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 0x241b51d601dfdb16ddefb811ffe399f33ef331f571d8bd0b4cfd61f1d3aa58d0. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbcdf248-b267-4517-8db6-4157f2838463.json and https://artists.proofprofile.net/proofs/artist/cbcdf248-b267-4517-8db6-4157f2838463.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 → 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 0x0f4f37ddca29f5556f10b60683c1877169fc20f29bc868b05fb4ba0e56bbe4b6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES7732202084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1cde0b702e80d40470a8014ca838a6b5ed700bc79855f1143101058ca59f01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES7712413202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2248e24eb2203bdebda879beefbb35c09fede420b08c63702bc9e9b3e63c6fb3. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ES7730802239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6648befaa74c2b43ea8bebaa022727bdf73870eb0286d71be22fdb123556db0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES7730802246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e7115c0248b5762fb288ef7004c1822b6f92d95eac1d151535859177e31cff. 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/PLC592200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c8d461563701e7507ecc38b95c8ffb50994db3095ea0e563634b4b812d2da. 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/PLC592200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79c11e945febcbd2661ce18baa64f779889fb67aa912cb2a6db3d17ebe3e84. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PLC592200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694b84b89fded75466a7349806f38912609631cb50deeaf25b7de7ae3e0fe964. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/PLC592200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ea952c840470cbf2d50e6c60091ca727fc76a978a26740cb97c84ab94a710c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLC592200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8f4ccd467bf0e4e83c05df6e2a3f27f9d03817c756ad69c77f758b536255ff. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PLC592200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18efe247483f5d066fcb308fba3ba0adf3246459c5b86c503d3a4de9c2792b14. 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/PLC592200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875456c9d67afe0e5aa55026a50931cf4932553564b28764f557a33ed0abf4c9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ES8070620378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc34d45ac1f9cd017ff5fcb887b46582abc33069d1450e019493438d93b0971. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES56S2300444.
El Piano de Ana Es una Máquina del Tiempo / Bellaterra Música Ed.
From Harlem To Madrid Vol. 4. The Real Thing
El Saxo y Otros Instrumentos de Viento / Bellaterra Música Ed.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1a562b346b40ba4ca3eaa5e978ab6de0b6537ffe9dde8e90a8bbaa613442ba. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ESA032005239.
Un Circ Sense Lleons (feat. Perico Sambeat, Albert Bover, David Mengual, Marc Miralta)
Toni Vaquer and the Voodoo Children Collective Vol. 1
Die Enttaeuschung Des Hans Castorp (Edición DeLuxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9042ac83826de5320fbb9208481128935f274c84a14cf62d507ef8583de1d19. 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/BRTRB2503646.