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 0x0054dae0a7c40f97bb799fb0ed4186a8b73d0364d38323184d2aeabe8784c569. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e444d20e-1748-4aba-aaab-4f461645f884.json and https://artists.proofprofile.net/proofs/artist/e444d20e-1748-4aba-aaab-4f461645f884.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jazz Karaoke Hits - Ella Fitzgerald Vol. 2
Karaoke Hits in the Style of Susan Boyle
Karaoke Hits in the Style of Barbra Streisand Vol. 1
Karaoke Classics from Leona Lewis Vol. 1
Katy Perry's Favourite Karaoke Hits Vol. 1
Karaoke: Classic Film Soundtracks Vol. 1
Jazz Karaoke Hits - Ella Fitzgerald Vol. 1
Karaoke: Classic Film Soundtracks Vol. 2
Look At Me Now (In the Style of Chris Brown, Busta Rhymes and Lil Wayne) [Karaoke Version] - Single