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 0x89aff568b7f65d96165c45da1a53e4f92c403f828064fb3ff4788b97d0fa7d73. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88ef29db-d81f-4a9a-b9c6-0e4037e857c2.json and https://artists.proofprofile.net/proofs/artist/88ef29db-d81f-4a9a-b9c6-0e4037e857c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Baile Flamenco, Vol. 12: Bulerías - Soleá por Bulerías
Bulerías (Avanzado) : Falseta de Salida y del Cante
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 0x7f1c01c53722ccaec055bb32d5deb5da10578fc68659472a98ee2ff17672630c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5270500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73346b65a730c06ca59b818f15465ebe56647d5837a4e96cc6540d759c748068. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5270500403.
Bulerías (Avanzado) : Grupos de Pies 1ª Parte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501f8dde97a2de7fd8c8f6a64871833774560f68d409d92ecca66cbff77948ed. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5270500407.
Bulerías (Avanzado) : Grupos de Pies 2ª Parte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939e1800086331e5f35b91d5172184e4ba8caa871e6e688d97b220a145d1b88b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5270500408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b26ec75706fc4c39a49c2501619851a6f57c36d5268f14aff24dd6d12899b7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5270500410.
Soleá por Bulerías (Avanzado) : 1ª Falseta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113985b37a788f9cb1f1b96512fbc50f9a9f092444b475c5fd43dd519f01192b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:28Z), 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/ES5270500415.
Soleá por Bulerías (Avanzado) : 2ª Escobilla y Subida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bdf06de4be80dcdd8c4022a34755ffe5ab71db562608a7d813fdf23c441afc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5270500419.
Soleá por Bulerías (Avanzado) : Patá por Bulerías
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35ed511c8dafa8289c41e6083ab845f5e16316571f0f97196019d18963cc296. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5270500421.
El Baile Flamenco, Vol. 11: Fandangos - Garrotín
Fandangos (Avanzado) : Falseta de Salida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c783fb9616b8b8ca336469d6fb5b21f983a6e3fae54c4784157e02b1a178a4f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES5270500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f62d0509c4f47a8cfc8623b45871bd3f717e6e04de3a09ab30d8e283c12dedb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:33:06Z), 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/ES5270500312.
Garrotín (Avanzado) : Entrada 1ª Letra de Tangos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0c71c8fed111a38bec49e67e1d7d952784f70a3834c6c76097d52a8630cfc5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:34Z), 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/ES5270500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f336778b1d554758cb03ff85610e90aa660b43ab135fcdf4e37b29e07cd027. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ES5270500315.
El Baile Flamenco, Vol. 18: Rumbas - Tarantos