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 0x0dfc69ad04f27c6e8e59fec40be1c0f681ced86b01ea994add665046c0d0b931. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/653dae20-8b2a-4fa7-abf3-7b8bf7882074.json and https://artists.proofprofile.net/proofs/artist/653dae20-8b2a-4fa7-abf3-7b8bf7882074.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Idontwannabeyouanymore (with Alba Pando)
El Caruso del Son: Homenaje a Abelardo Barroso
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 0xdc6e2fbe039f6a61704f9af701764924b1142ae7ff72348b2bec80cb4c121508. 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/CUA020215902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c30e5b0c5fecf7496f81bac37c4addbac70c11f0b0bc2874278ba463d1eabdd. 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/CUA020215903.
Danzando entre Puentes (En vivo en Conservatorio Tomás Luis de Victoria Ávila 2024)
Trueno y Tambor (En vivo en el Conservatorio Profesional Tomás Luis de Victoria Ávila)
Caribeña (En vivo desde el Auditorio Ramón y Cajal de la Facultad de Medicina de la UCM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2485a43110e2c996e0debe5d0231b0b95cb134a98281944253e30eee3ce3b708. 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/CUA012101410.
Rumba con swing. Re-creaciones de Chano Pozo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6605e0a34de9ed455e1d89393ef0eae5a46a59beb6bc877a50f0c4b815f4d36f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBMA22571359.