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 0xb1444dbb395f0c96ad31d6256879aaefa619c2a766421f1957300a5264391a05. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53b87a75-03a7-4b11-99cd-378ca8a564c2.json and https://artists.proofprofile.net/proofs/artist/53b87a75-03a7-4b11-99cd-378ca8a564c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Safina (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
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 0xe4ca9812a4355f032fa260887d92cd45fe6b6bf282fcec3e16e911ac1014d587. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:40Z), 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/QZFZ52130199.
Falasteen (The Noam Chomsky Music Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4183c0b8934397153876ff205840af82cbecb496a3203dfa219ccd6674f8f29f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBKQU2325948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2af6ccc72568b4efbec10b4fffd11d72a7ec69f5ebea11a7a70fe7705365fb9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU2325949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4183c0b8934397153876ff205840af82cbecb496a3203dfa219ccd6674f8f29f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBKQU2325948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2af6ccc72568b4efbec10b4fffd11d72a7ec69f5ebea11a7a70fe7705365fb9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKQU2325949.