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 0x23497dd6435570b648c0a17aa42820a754c56bba523fd991f0972d1c811e051c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/968d76cf-4f65-4f88-a505-97c355cec492.json and https://artists.proofprofile.net/proofs/artist/968d76cf-4f65-4f88-a505-97c355cec492.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Luisa Fernanda, Acto i: Introducción y habanera del saboyano
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 0x7ebb3b687de8cae818b911d80f2b4699e5c158c8596061da1df2d6fd142878e5. 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/CA5KR1981884.
Luisa Fernanda, Acto i: Romanza de Javier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6642dce41e494c89ab5fe2a3520f1beb6a4137c367501b2ed2e73b77505beeed. 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/CA5KR1981885.
Luisa Fernanda, Acto i: En mi tierra extremeña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63206784fbe6b92a576908844e2a83bcb1bc1c85f5418893239c2f5ccdc3cf3. 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/CA5KR1981886.
Luisa Fernanda, Acto i: Caballero del alto plumero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cf5e8ee863dc2e41eff6acc056de121dd64d5a2947a8b984e5239c1524d7b7. 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/CA5KR1981887.
Luisa Fernanda, Acto ii: Mazurka de las sombrillas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1e6049a221afea796ff24c9b30d393b7bf9123891dd64be60f3560ca34fa71. 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/CA5KR1981888.
Luisa Fernanda, Acto ii: Para comprar a un hombre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279148b83af811880058f4eb3a4342280b09b3332bae077843f3b5caf6a626d2. 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/CA5KR1981889.
Luisa Fernanda, Acto ii: Por el amor de una mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb299cd7ed91ed5ded8955e289057d21ea088c1f0cc0c4ab07a593853e158c9b6. 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/CA5KR1981892.
Luisa Fernanda, Acto ii: Final del acto ii
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57972780c4d599603aa64f1768c547a9c24097131549f088d7394f75284380fd. 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/CA5KR1981893.
Luisa Fernanda, Acto iii: Romanza de Vidal y coro de vareadores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccab46ac1764b1c6814941063b40b86ed582ea30a7a7bad18f0107a9d33dc3ae. 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/CA5KR1981894.
Luisa Fernanda, Acto ii: Escena y cuarteto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fde548ff9a62fafe4699093ebebcf83f474fe2e31657304bc10c9f2813fe2d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CA5KR1981890.
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
Luisa Fernanda, Acto ii: Escena de la subasta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e9724d89180e40e0388ce9be22f00827d0107224abacd87866eb019931f8d8. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CA5KR1981891.
Luisa Fernanda, Acto iii: Subir, subir y luego caer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71918e7787f1e9e0fec5cb4f9df224b65392d40247cec5ee9b1cd24ccd395136. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/CA5KR1981895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d250233dd8be94ed617397ed47d8848e4573a3142d782c5a3e1e5a3a828a33. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CA5KR1981896.