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 0x15b3d3a8f45e30d8562bf62d5af7f66560c36aa96f7c9ec2a26e65eac3caa608. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04a22fb1-62e6-45e9-8df6-8dd891316580.json and https://artists.proofprofile.net/proofs/artist/04a22fb1-62e6-45e9-8df6-8dd891316580.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Karaoke - Contemporary Christian February 2003
Karaoke - Contemporary Christian March 2003
Karaoke - Contemporary Christian April 2003
Karaoke - Contemporary Christian December 2002
Rock the Boat-3 - In the Style of Hues Corporation (Karaoke Version With Backup Vocals)
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 0x89bc3f3543eeead4f8e9da8462b2c94c3d28df96d4d2380f8d69b0caa734e5bd. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/US8K20914546.
I Love a Rainy Night - In the Style of Eddie Rabbitt (Karaoke Version Teaching Vocal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75709413c8a5c3ce2f0d1565cc9f70b6c78540b58a942ff4106a1c0887f12551. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US8K20964554.
Karaoke - Contemporary Christian January 2003
Traveling Light - In the Style of Joel Hanson & Sara Groves (Karaoke Version Teaching Vocal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb9d75223a9bf47041e2b5d3a07bded119070644bca9b543670f00831b55c54. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/US8K20968154.
Adrenaline - In the Style of Gavin Rossdale (Karaoke Version Teaching Vocal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd79ac5d38aac37e25bc527f8dc7555e45736a088e861f1f35d7dad818a7b7c8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US8K20967637.