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 0x435ce0fb543f476179820f15eea1e0e9d218bb1de575accc874fd886f5a5876d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4d6a7cd-51b2-425e-b599-5903cc790bfe.json and https://artists.proofprofile.net/proofs/artist/f4d6a7cd-51b2-425e-b599-5903cc790bfe.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 0x9018a15ef9bf186cb4c302ec56ff3fdd99d260c6858c1e32ed04a417d811ecb3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:53Z), 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/US7VG2142454.
Disney Music / Once Upon a Dream / Beauty and the Beast / How Far I'll Go / Let It Go / an Ideal World (Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f5e128892871c510268b4ec19c736c3ba04a80a78473ee019d9cf2f9fb19c8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:00:20Z), 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/QZMZ92211085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1a869006a77e0c5811a8e4e5936599bc68d9f2777a7d1b39708ef27d082b46. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:39:33Z), 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/QZTPX2491234.
Have Yourself a Merry Little Christmas (Cover)