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 0x82c861f84766f816d48d86690a884c978b8c89f24aa1b77fdb384fb4d1016168. 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/77ef10f0-951c-46cc-b092-05e6b667da3f.json and https://artists.proofprofile.net/proofs/artist/77ef10f0-951c-46cc-b092-05e6b667da3f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Amor / Procura / No Te Pido Flores / Amarte es un Problema
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 0xa58f3ef1ac421e2e94a4d1687e94d41c40903f4cc0dacbbf2cac3ff2aa6acaf5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES19G1000318.
Grandes Exitos da Orquesta París de Noia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a23c728a678fb95a4b31e6973fab03793872d698ae33952651996c63ea8740d. 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/ES03S1300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bb55f538216bd361d8044df162be0a9bdc793606d8df8f2e5a9deca58c98d3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES03S1300154.
Cumbias para Bailar Con Orquestas de Galicia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a76edadf3bf47f1eeef3e4acad2661d061767c56f091c21478a0ce55d99f1b. 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/ES19G1000314.
Fiestas de Pueblo Con Orquestas de Galicia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff63bc3b002268d3ff062ffcb378c131e54a44e6e3cef3932e170502f1a983. 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/ES03S1300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a76edadf3bf47f1eeef3e4acad2661d061767c56f091c21478a0ce55d99f1b. 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/ES19G1000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f3ef1ac421e2e94a4d1687e94d41c40903f4cc0dacbbf2cac3ff2aa6acaf5. 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/ES19G1000318.