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 0xdfa8aef0daf7393c70c1ab9e4f163258fb3566f7f4de8c9e7d5eab80a7b906c9. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac1a771a-567e-4f8a-961a-4ca3607a10c8.json and https://artists.proofprofile.net/proofs/artist/ac1a771a-567e-4f8a-961a-4ca3607a10c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
This Is Why I Sing (Incl. Terry Hunter & DJ Garphie Mixes)
Dancing Feels Like - Pirahnahead's F Mix
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 0x6f5ef193de850a05213df284171d57ec49ca616a3d7a196d161e0330e04802c3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBGXG1200409.
Sightseeing (feat. Diviniti & Pirahnahead)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa98bf563c29944d4a9ee52e149915b8756dbc67598273a2bfc3408df2c41e25. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T20:40:28Z), 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/US9FL2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa98bf563c29944d4a9ee52e149915b8756dbc67598273a2bfc3408df2c41e25. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US9FL2100002.