Cecilia is a personal name originating in the name of Saint Cecilia, the patron saint of music. History The name has been popularly used in Europe (particularly the United Kingdom and Italy, where
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 0x1a21d38a628e99e3ee23935067d4388d57909411a3036b4b4fac866252432d98. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac1cb18a-9678-441d-a360-132859777866.json and https://artists.proofprofile.net/proofs/artist/ac1cb18a-9678-441d-a360-132859777866.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 0x026880425df428640fdd936a0542f5e9585f8818484fcffc6366e14589976cca. 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/ES5021702512.
Un Ramito de Violetas (with Julio Iglesias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8772e86d1381cbc026af73a9986c74216f306f81fc9fbbcecc31da608a4ec901. 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/ES5119600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456f80aa22f750bf1a97c1454bb73ff25a5e9ff76e35f5f7286c348d28529d94. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5118300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b9cab1ddc0e72558b250f549e8f26c1205103c7fa5df08d7007450df64b4f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5117300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536ce498733b9bc8250b6881ed59ed8e492c1b12d45dc4669a5c14fcdf367841. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5117200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3730231a833ad226861d966cb79241e82c372dbb3faad2a2e1ab458d78e578. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5117500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02acfe4f4eea168a24f8fbcd5eef71677f91d653582e4c13215a2f31f56e7f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5119200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8772e86d1381cbc026af73a9986c74216f306f81fc9fbbcecc31da608a4ec901. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5119600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe40f055b668a949ce628a992328c921e85e340d91da04120a978f76e2988a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5119400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12f4fa3c81ee775d7e163cc9d3664eb9101fc4e953294deb53028b029958ab3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5119600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e96b8c0bdf3c91459cf6c3c77e9c8dd119a501eaad2551ad37ab28bc81ef57e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5119200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8145ded49bfff6dc421667880a7fdbe48012ed2c1eae30fcbb8c1cdab962dbc0. 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/ES5119200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc70a92120756652757ce191026c79d15fd065df6e98029ada4e79a008c4e523. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES5119600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e3ff22f7bd4b969597d00d459d2bfde23e00e5b61ca8bb8a6a5546931ca276. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5119400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb6d22c12e3dd4c7b476f1314faa33d2484b1d22b30ac0a09ef586d841b5bf3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5119200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29902a8cb90253f1936b749b1d17eaacfe28f6454c9caaaa24d2ac8bc4acb6c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5022301851.
Si No Fuera Porque... - Remasterizado 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2510808a5bef038f34c0be6b639c007730310b8bcea87ba06689b0e7f7a44c8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5022301854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd05249fb7dce69d48fa33484a683bbbb8a2854dc6742daaf931c26ee78b6dc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES5022301859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb5c4f4aa7f3950da0491be98d61832912db3888cbbf11027cae068752ae08a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5022301860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53234c5f303f929c382137cd36f68135b8d9f50b90cb81c4f89b61853e3f7103. 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/ES5119200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a348d0ea007494f3b828bc03503b1f73c2c556241e13fd62441a4241b64c79. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:43Z), 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/ES5119200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0f5091ed2bf1c1ba213145777f7636236acb2ed53eab3f1f0a45d7c29915fb. 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/ES5119200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b98589c6ee225cb5e9d5d5a77eda9f71570d6058b356780a34da74f38cf7b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5119400006.