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 0x5faedb59ac9cddd84e97ddc32cdd656e67d97bdb7034236fa36426f285c9bace. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d79a9b9-d75b-4923-9ba7-d0870f3efe7c.json and https://artists.proofprofile.net/proofs/artist/9d79a9b9-d75b-4923-9ba7-d0870f3efe7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Palau De La Musica Catalana (En Directo)
La Luz (It's Summer In My Heart) - En Directo
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a369d50df1ef21b153bf4e5919bdbe87f6ecdcc6a5ede829456c23862d6016. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4k3A3s8SwAL4sjmi9Xch0H.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4k3A3s8SwAL4sjmi9Xch0H.
{"copyright_id":"0x98a369d50df1ef21b153bf4e5919bdbe87f6ecdcc6a5ede829456c23862d6016","isrc":"ES17D2201604","name":"One of Us","registered_at":"2026-06-24T18:42:22Z","spotify_id":"2BGZNOmBOItx2KecloebnO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a369d50df1ef21b153bf4e5919bdbe87f6ecdcc6a5ede829456c23862d6016. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2BGZNOmBOItx2KecloebnO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2BGZNOmBOItx2KecloebnO.
Et Queda Tant per Viure (El Disc de la Marató 2021)
Et Queda Tant per Viure - El Disc de la Marató 2021
En El Medio Del Camino (Sister Golden Hair)
Generación OT Juntos (Operación Triunfo)
{"copyright_id":"0x77179ae696ff7b2b40bd14b9e8b14242c2881fd1c6181994e2de961dfbaec252","isrc":"ES6010300055","name":"En El Medio Del Camino (Sister Golden Hair)","registered_at":"2026-06-09T07:20:31Z","spotify_id":"0IrDyrfyVAw3JTzCTizjaL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77179ae696ff7b2b40bd14b9e8b14242c2881fd1c6181994e2de961dfbaec252. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0IrDyrfyVAw3JTzCTizjaL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0IrDyrfyVAw3JTzCTizjaL.
Eso Es La Amistad - That's What Friends Are For
Operación Triunfo – Gala Eurovisión 2003
{"copyright_id":"0x5993facaa5d78278a93e75159d00ebbf7acd5a7f000de6f18bfacc29d7b90bef","isrc":"ES6010300069","name":"Dime - Version Gala Eurovisión","registered_at":"2026-06-06T10:06:39Z","spotify_id":"3igJiKcDRiPbyPEhvWj9TU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5993facaa5d78278a93e75159d00ebbf7acd5a7f000de6f18bfacc29d7b90bef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3igJiKcDRiPbyPEhvWj9TU.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3igJiKcDRiPbyPEhvWj9TU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882524083325944089428473983c62eaf9a4b825f1fd8b1aacea2f6dd6cff1b4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0i0cPmGTLuk2wPHUJNG5pM.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0i0cPmGTLuk2wPHUJNG5pM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf022aa6d8dfc27c4554f5d80d2cc072c66444e233f726d913466a4ca68299aab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/10LJTJrDbdta27a3fZOVQB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/10LJTJrDbdta27a3fZOVQB.