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 0x963ab72daf088fe6784c1af2fd4750bfafde33db091cce73e6e7973384179869. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90c33f10-a898-4f0b-af92-83546565e623.json and https://artists.proofprofile.net/proofs/artist/90c33f10-a898-4f0b-af92-83546565e623.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
How Many You & You & You - Artist: June Lover & Buckshot
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 0x9488a1a492a70bccc2df0f8c8d0807d442ddbbd17b8006a26af20553e8d71bca. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:03:07Z), 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/SEYOK0987807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba499d829f68f0a9453c34a3635eba23bcec812d7b0561fde7a92b91b3c143c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:21Z), 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/SEYOK1018480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea344290f60381f145648d9f25c44a866d42af3a684f2ef377453a217b6672b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2532440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef6a920f3d0611c05af6880e13a4941bb471ad626187e155dbb9b520d1efb3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2533508.