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 0x48b794efe126f5c831bdee18d36aecd72ac8b102c1edf0f09b930b9a9f428bdc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58607071-7287-48f1-8f1b-c1f737ba1026.json and https://artists.proofprofile.net/proofs/artist/58607071-7287-48f1-8f1b-c1f737ba1026.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cervecita, Boquita De Caramelo, Que Seas Feliz
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 0xd6600f118645a9a9ba49249cef5e1a1187d3a8e69923291cddc2f39883b62b50. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFF2442397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3171e2e42289c6f0e73e6e96cff429c4ba957c731b6f3bbe658c3093bdf6f5df. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PECR22401638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1336f7e53a17141292fb8f0be88fc9a7c06acebd2689c1dc8796e61b68c08d. 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/PECR22401785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c9789cdb4b862c4fb1f12fcb147e9cb0f2c914dab21a119a932f16423befff. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PECR22401784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af756b7afac579863ec4579c698add7f1b203a5a31f64a4884a0731bf985095. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:44Z), 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/PECR22401782.
Porque Te Fuiste, Amorcito, Dejen De Joder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5819453616e110c1c68e2e568ba8bbaefe16b99261de9b573fd06a567679c437. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFN2498446.
Papeles, Que Bonito Es El Amor, Cenizas De Amor
Cuzqueñita, Te Quiero Hablar De Amor, Tienes Tu Dueño
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a13fa7da68b189a8eeeb19b7cfefc10eb7fe8bd9933678b8e03609267f4860f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:47Z), 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/QZWFN2486594.