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 0x1d69c66ed57e84ad94b199417214ed4dfa4178be0e4523a09918a04b591311b5. 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/579abca0-725d-4d0f-b4ee-4999f6565df0.json and https://artists.proofprofile.net/proofs/artist/579abca0-725d-4d0f-b4ee-4999f6565df0.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 0x7e6b95b9f3b6e121a0a83f143df4bf6ae8ef0f8369cb43f3b3fe125ef65478ba. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:38Z), 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/USBMS1350149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13475448628d9deee7710b76f7ef159b4f8599081547ff3adf2cc1bc5652e9c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USBMS1350151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515272cc62ca7e364651e1efaa5190cb1e65273db047aa3e76672bede3aca31. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP52181022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ccab5592b0b537c97264882e64e1eeeb8a8f12d9c9b38f6688849cc9bd8b15. 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/US3Z42500063.
Latin Hits 2017 Club Edition (50 Latin Music Hits - Reggaeton, Urban, Salsa, Bachata, Dembow, Merengue, Timba, Cubaton, Kuduro, Latin Fitness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51f979c0a8d10267dc83ebe5fbcc036fc7cc02657743e1b9c2871b7197423ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DOA151700012.