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 0x6f29e6cc848109d25dbec7424134834127678f51204193f999b713a48bb9f816. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5f19de7-0116-4ac7-ae89-21f23ff63c2a.json and https://artists.proofprofile.net/proofs/artist/d5f19de7-0116-4ac7-ae89-21f23ff63c2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Generala: "Salida del Príncipe" - Remastered
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 0x1d1b31e400c8eab3c5f70a9a1b4bed05de5ca5799db619fb5666c30f015e689b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271300802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a383492122217fd043db17c01f8b10eb6cade8505832640e2bdde33f9248c. 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/ES5271300803.
La Generala: "Salida de Berta y Canción de Arlequín" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4d84e86eb12d3cc4d3b874f75d1a87ef90e6f9d54ee185d913c06f260786dd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5271300804.
La Generala: "Final Primero" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1096b814f367699caf3aa642ae92d66c7804bbfc4f62b82cb01b3bcc040131. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271300806.
La Generala: "Duo de Olga y el Príncipe" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e48a08d443a4c88e2453f82c01f228eeac84160ccb26f2a5c628a89c409fae4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271300808.
La Generala: "Canción Escocesa y Giga Militar" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f6364ea84bbc382a8c10ea656e48185b4c626dba630cca2562e942369ee0dd. 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/ES5271300809.
La Generala: "Terceto Cómico" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c601778a938cd81ad3315e8c70a7c7a0a8dea6696a2af871cea22237038af19. 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/ES5271300810.
La Generala: "Escena y Duo de Olga y el Príncipe" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa838648af41551729fa960fbb7768de531f531f10e495b68a49a556cd5f840. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5271300811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe33698ad34deb116cac44f98bedf546f7515e273fe6aaf26f8110ae037e30e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271300812.
La Generala: "Introducción y Escena" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c79a5d9562bb96479f14052342a10a4059eec23656231fc4a9987a96aa7c3. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ES5271300801.
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
La Generala: "Duo de Berta y el Príncipe" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac4afbd22a826ab423253857d6879ce7e850cd8e0c131fd87c66aa54ff7cb1. 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/ES5271300805.
La Generala: "Salida de Olga/Ofrenda de las Flores" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a985eb3a624c8d77f55b8b1ab037fbafd628e0ddfcad8670741ae660ccf1943. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ES5271300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c94360a42eee5dd3535e9ae9efb397eb7c10e233953530ae512f43638805da. 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/ES5021702689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d035c682548f4a28774bc2fb89d0e16a55ab62d59ab4402975509c80b3bf14. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM4TW1574987.