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 0x72528244f90684190a6d620171228414a285d0f7559290b9decd23aaacac60e2. 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/ae286cdb-d33c-4e4d-8825-373ad4df9a5d.json and https://artists.proofprofile.net/proofs/artist/ae286cdb-d33c-4e4d-8825-373ad4df9a5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xeafab37fd860cda7f0940fcee380c3218b697eb2a1bff399ea1c8dee5ed69875. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:16Z), 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/JPD731501070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b8f9881a52e2ef185713fe163251ef79543ce71a377a02f4d1cfb3205cc736. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPZ921806984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331d68611a1029a39192b5706aac10118e589ae30279455bc892b7f45475d746. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPW461800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9167ef1a1e825e08e7c293728e4cd96f3138177d19d6e8cd90f9c1f4e35251b9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:10:30Z), 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/JPW462118451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc602dd53252c5ce60d71250f459a4e54628a5dc766c2eb82830022b3f68f90f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPW462118452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5700564ae5155982e4128486c2ab50d523e232736c84ec7f84d406046df5f3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPW462118453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838bb17b9bf5100734f643fa93c168070cf8081ea7d711d7a828e77c0bd79796. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW462118454.