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 0x90e490735f1280c6935f6c71b4aa3cdb51da409ae4b49a3dfecf215310f14083. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/496b38b6-4fc4-4af2-b104-a6a5550ad51b.json and https://artists.proofprofile.net/proofs/artist/496b38b6-4fc4-4af2-b104-a6a5550ad51b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb792f5cc0e85ef2c213ffc57891a3d0cb0e85a44324093bdb922f2a66f6bc7ce. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNJY2281164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd02254dcf17ed23f7ccef453652a629acc0ed0bbff1638f09bc3fc8986af49e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNJY2281167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a97a15f6f4f2036d3ddad5a345df15c3b2cbc39948198eed4a3a57dab4ba84. 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/QZNJY2281169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb003dc9218e614231b3c6d31b717480f58bfaa7caea109d2ade2b64bc50dc9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTPX2244347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7e448002adaac7a40fbc51a1f50821b21af726290158bc098aa5dcdcb80848. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTPX2244354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4232929fb14adf842de4ca569dfa0709e5e5895dac8563c6827ceda667d71b09. 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/QZNJZ2277951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdd671993315c2a394a4a966eb70a663f4cb1b0980a8de2efda383b49364bed. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:17Z), 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/QZNJZ2277956.
Sembrador de Amor/ Manantial/ En Tu Sonrisa/ Traficante de Besos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9274dd0f68e79e5c7e8f5b60b5999abceaa035bd7ee0437fb454105b9bb89b32. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTPX2280483.