Juan Carlos Zarabanda y Su Grupo Sensación
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 0xb1c48bda0dd3999af70161189cce5f34a85864468af0aa528dec730fdb32c28a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a4c2809-29ec-4f77-b5cc-2556661da16b.json and https://artists.proofprofile.net/proofs/artist/5a4c2809-29ec-4f77-b5cc-2556661da16b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
16 Exitos - Rancheros, Corridos y Norteños
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 0x20ba24526a7a55f0ea96cf7b527ddd4273a1da8855e61979df7d4695991d8b08. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COF010000757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f7b05969de44191a973f90306e77e0285da94dfe5240c0a680e121caab29bf. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/COF010000758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ce022a2cc48ed10c7b61e93d7cf0669c89f31197e28759dbf6ad4e34c52d49. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:35Z), 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/COF010000767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b6491b612d895d2884848f82be472cc104326e647f6e0386a514b07866690. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/COF010000759.