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 0xea9837f63254430f9157e62bc2468aab27737ea6cba7abb3c90a36cb7e624736. 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/9595992d-1a12-43b8-8c68-8ab8685b9798.json and https://artists.proofprofile.net/proofs/artist/9595992d-1a12-43b8-8c68-8ab8685b9798.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 0x018cd5a4c7400c2d1cef88fac3d724910baa0bb1e308f1c20ab412c5c01da6ef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6N2004888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f686630a685f42b9cad88ae918cdeb00c26bfbf036f0df10bdf41ac25e6d795. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFYW2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa110a6322751ab8b1d2a29cb99f1d4597b71a70d7e4e094b666697c1ae549a17. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:43Z), 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/AE2DY2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d02000110662137376f22499925d5919d5acbaf9f800cc1009908a165ef5ef. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:03:14Z), 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/AE2DY2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf9fa87574fb67536aeacb11cdc8792b6a3bba4b27401777d147f76cf4d4f54. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AE2DY2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab54248508398465f6fa85b627378052a6c8fed38175cd2c02ef01b34b1b8d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AE2DY2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ed697a2d7f87a5b1463fed96e346381f6cb6c0ebee7e941f0a5a6914b79e8a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:21Z), 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/AE2DY2400075.