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 0x52643518c6c199452a9c1e54a5cf93f26aac42a2d8dee6f243519a6f7144eee0. 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/52e88332-f014-4acb-b963-02730ebb290f.json and https://artists.proofprofile.net/proofs/artist/52e88332-f014-4acb-b963-02730ebb290f.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 0x987cad93f41adbfab105135cf7e14ef928fb4872c65737a64a5368890c6a4c1c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DGA062387389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a5b00bf841c8e114a1fbabf06be8df84a99676cd00a5a4c4a8e35c967329bf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA062387390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d870fcd2957ea08d2905559023e95f1a5d280850d1f40462adebde829701c79. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA062387394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9769e56e16aa7906cb89096cf9881fb759fcaca36670f9cd8aa34a7d1292c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:15Z), 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/FRX201911845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021924826af1dacbb814236150a1135f8f6f3c53dd954f77947e7132a1e6ebd7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201911848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd19874126d6bec7ed70689ad849671c856e6efa890385fe0365c23553d7446. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX201911852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497b324264a9bf2e443615dd9e692e81f951b53a2d80bfc957692dc44771df44. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX201911855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd076f652e1999a4ba405f1a4c2d484adaab4e696737a3f946b234a606c65eb3d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:21:24Z), 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/FRX201911540.