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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7daf8b1111ee9fd200a3deb3a55a50c1a81efaf29f766284885ee861a832bc0. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1c232b6-7eb5-4775-aa19-95c104080551.json and https://artists.proofprofile.net/proofs/artist/f1c232b6-7eb5-4775-aa19-95c104080551.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Improvisaciones en un Espacio Sin Tiempo
I. Profecias y Evocaciones Antiguas (From Medea, Act II): Invocacion: Coro: Tethysque novos detegat orbes, Pt. 1
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4540d4dd33262c1deb9eac3f2309fd2b3479ce56e539888f4e1f90c37c5206. 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/CH4210600073.
Bitayhí: Zejel "Oh Cría De Gazela", Zejel "Este Amor". "The Splendour Of Al-Andalus" (M.A.-M026A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa61e804086a1101ecb0b84e8567d71dbd6e4f7185abe161743afb135b50bab. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/ES7730208727.
Rumi & Ibn Arabí. Oriente & Occidente Siglo Xlll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3844bbea5f480f8896a0b2e37e462510918fcf1eba8163ae2f5077f1485279eb. 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/ES7730508300.
I. Profecias y Evocaciones Antiguas (From Medea, Act II): Recitado “Vendrán los tardos años del mundo...”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89495b32cc7f80dbf5cd1a5e6ff7d4feb12b7bf6e4aa37401767fc346a714947. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CH4210600079.
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
I. Profecias y Evocaciones Antiguas, 1408 Reinado del Emir Nazarí Yusuf III: Instrumental Arabo-andaluz (Mowachah Billadi askara min aadbi Llama) [Improvisation Arabo andalou]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081eaae0b1fdd4565944a84df03380a842aa9857aa20a7de2f946bc4a9e0c23. 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/CH4210600082.
IV. El Fin Del Al-Andalus: Recitado: texte en arabe de Ibn Zamrak
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9165582c9a9f1d86c41caa6e2f8499cc97fc86cc8cd73e6cd74eb7a1716bd6e0. 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/CH4210600098.
IV. El Fin Del Al-Andalus: Jarcha ("Ya amlaja halki") [Andalousie XIIIème siècle ]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcc292d5919874d2646bf41683a381721ce11dc1f515e1f7c8cdaa7b6469c6b. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/CH4210600099.
VI. Descubrimientos y Agravios, 1502 Conversión forzosa de todos los Moros de los Reinos de Castilla: Lamento arabo-andaluz s. XVI (Nuba Hiyay Msmarqi. Mizan Bsit. Ya muslimin qalbi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdbfb3ec3e5fab099559eda9bdfdb8b57cd3ae03f458ce8f2e36f222c80ca6d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH4210600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc5263cb42e65a1f766cd887f6e7a31f86aa3fc969e475bd5c9a3e98c615f5. 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/ES7730508295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8465a9bad9978c9ab9403a9574485c61ba01e30d983c02a6449f4785d7d35c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES7730508296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47ae2d1a172edd9f8c6dfc2234d15aef5255b3fae333bec4a12983fda89db02. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ES7730508298.
Cantiga De Amigo 4 De Martín Codax s. XIII. (Versión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb26749e1cccaff16853b289e97cc9f02d107b032a0caf4860583746c3a27946. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7739508073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258dd8fa96de0199147c5a0321b46b7c5680a8eb105f8428bd5d55b45d3b43e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES7730808186.