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 0x549cb573211ab4bc8449c78fc40ced14b41feec97d41668f736fcafb81bdeb36. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a27aab74-63f2-4d5f-817b-6cff361ac54b.json and https://artists.proofprofile.net/proofs/artist/a27aab74-63f2-4d5f-817b-6cff361ac54b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ladies & Gangsters Vol. 4 - Gunz N Roses
Sir Nasty Classics - Disturbed 7 / Generation 80's
Sir Nasty Classics - Dark Side of the Mic / Good Morning AmeriKKKa
Sir Nasty Classics: Black Christmas / Let Me In
Sir Nasty Classics: American Horror Story / Game Over
Sir Nasty Classics: Middle Georgia Massacre Collection
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 0x51fb67261117f5ba78015690b1a6b4654db8809c7fca9dd0b143d5a897c4d2d2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USX9P2483112.
Sir Nasty Classics - Alpha Male Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fa692d20d1c0a0adab680ecbaeafa726dbde947b78d23abf612c10b5d1b2a2. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:01:07Z), 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/USL4R2444936.
Sir Nasty Classics: Jason Gang-Life Of A Sinner
Sir Nasty Classics: Murder House Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9537cf6f783a5ff6c9e6a65894b0e9dd159c0d55468672e4af95d0d9e7d533b7. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:02:00Z), 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/USHM82588280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1152eba746ea44384cec2bec6e2bb0dab257ab583474cceab6da6a520545189d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM82588282.
Sir Nasty Classics: Streets Elevated - 1983
Sir Nasty Classics - Restoration - Late Nights and Early Mornings