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 0x3a2c6d6afdd66707574a6048986d9ad31f392448111bb426187bf70d54cb1609. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeec112e-789d-4930-9f41-577f4ff6312c.json and https://artists.proofprofile.net/proofs/artist/aeec112e-789d-4930-9f41-577f4ff6312c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chris R. Music : Instrumental Music for Rest & Relaxation
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 0x031b24ff175b0491117fce1ec8510eb4506985514b78feddb0d97061826788cc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:04Z), 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/QZNWY2499221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cdf12245bdfaccee3ab905547af53cba0ba20cf01c4618679eecfbb59656d4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWY2499222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f449506aa6772fe58dcdc135aaeb8e86e93a06ce78dda533ecdcec225c3af0b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWY2499223.
VOL 2. INSTRUMENTAL MUSIC FOR REST & RELAXATION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf067ad69cf12f5ac81629aae3b5fc7d3108e87bd09af221214841e5ff5059f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFF2416649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c03ef49530a509bfddeb4d9456d14ad14769cfecbacbcc7652398a191e4eec. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFF2416650.