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 0xfdab310a6dd2c3a599678b69830b77ab780f1ae8ec1a829c2808568ca61ded01. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/646caa63-b6a4-46c1-8ff3-489cd0042f24.json and https://artists.proofprofile.net/proofs/artist/646caa63-b6a4-46c1-8ff3-489cd0042f24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Teddy Bear Dreams: Whimsical Bedtime Music for Kids to Dream Peacefully
Sophisticated Sounds for Picky Pooches: Classy Canine Jazz, Elegant Tunes, Relaxing Melodies for Dogs (Piano for Dogs)
Twinkle, Twinkle, Little Star: Piano Lullabies for Peaceful Nights and Happy Dreams
Jazz Lullabies: Calming Piano, Ultimate Relaxation Collection to Sleep Aid
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 0x6b8b50b0d38ddd994f2a310e4cadf9274caafc523e8cb79b88383a7041250de7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEWWH2402346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0024557b3e48176fbbf9dadf4aef991e28c3958a2c230bf953068d0dff81b54. 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/IEWWH2402349.