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 0x5c2202806d846d6a320956bb97f8bd012f8be1df753a7a332b747637323d7d6c. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81ab3791-cbb0-4fc2-b611-03931695a65f.json and https://artists.proofprofile.net/proofs/artist/81ab3791-cbb0-4fc2-b611-03931695a65f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Velvet Voice VOL.13 [Nu Disco/Deep House]
Velvet Voice VOL.14 [Nu Disco/Deep House]
Velvet Voice VOL.12 [Nu Disco/Deep House]
Sing It Back Acapella [DRY/126 BPM/Dmin]
Can’t Get You Out of My Head ACAPELLA [126 BPM / D Minor]
Don't I Make It Look Easy Acapella [149 BPM/C Major ]
Сry for Me [The Author's acappella/124BPM/Fminor/WET & DRY]
Ain't No Sunshine Acapella [118 BPM/ a Minor/ Wet and Dry ]
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 0x940e445083215f2bf3f653c7e510365376efecc1d503c3ae71bc3a09a37cd464. 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/FR6V82221150.