1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xefd8ab22d4e5191e5e6dd47fd399740fc537d91d483836c6eec26e1f31e10402. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dc88f09-2d6f-46ef-83f2-ebef277e4aff.json and https://artists.proofprofile.net/proofs/artist/8dc88f09-2d6f-46ef-83f2-ebef277e4aff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 → block OTSBitcoinBlock must exist at that height 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 0x716cb4216e19c45ab6f579bc22993a8c9474f5127211aeb66b6a7a27712e21f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCLQ9900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831e32db4e316499a2cb5f3f70949e431742fdccce13bd4832860eb362b53f21. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCLQ1700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85113b9995e19a9c05ef0b8f01e7285f87fd41db22e9e46c7e06ae8bdc23b72e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCLQ1403457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ab166ee6b14e64b9feb837bfc18584126b0564bc4e478e63cf7a1de7efe586. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRRGE8300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4bd32ae40ea859da419f34a6d13ebd56d8b091f2afae7aa6414562c22a7f63. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRSGL6900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5791d534dd9f7406496a859fcebc9139cc78631ae40d805147a23aa79d438d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S2030050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e579ad57b2edf2d29162579bfc6080a2158e36018578a3c9d1514e764f422f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6F31928440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e30086b8c0dccd044f70be5ce522531a436dcbb938e1eb1379a8242dc99f3d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLQ9900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f517d56f937a49876f4c316d02a44b0ba7d35b68dd79096600546b4a60151c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6F31928450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae2e33ee2958b03ed179375de40988aae0435672438f4324cb4591272427df. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBCLQ0601135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51ddd9ac4eb109a017c65881f713d89e511a69e708cb3443ecb0d3c18a562ca. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBCLQ1402196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb078fb74a9dd372a047b92de867617daa974ef6d9abdffb79efa5a563d3559a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSGL8300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2ee6b19d1ad8e59b829b6e5f8c5a4d99c964a305c9afa5ba6ac0b228425392. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBCLQ1600296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdaddcd25b1940ce703323fcad367959603be4dc2bb9cda4790816ef3ade4a4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRSGL8300164.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841046f06d67cd3e9f8a7f8b0a9ae73747726d51ddd336d3263fdec93b73a123. 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/GBCLQ1501768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5427ef5d0e603a54ebc21fd90455eadf08c96e60ca5c80544195c97544e8d057. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRWMB0700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7f3389609242a55d0ddae061479cd2cca8a2668d81975660dccd554fc97e60. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCLQ2000043.