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 0x840e13db6ba01ea6bd9949e7f23e8111fe937bcb0096411491e8429302d9c4b3. 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/cb74478e-5824-4f10-bd03-64bc1a5d1540.json and https://artists.proofprofile.net/proofs/artist/cb74478e-5824-4f10-bd03-64bc1a5d1540.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 → 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 0xd7ed7328b03f08a2d904a4c2396b85cd8bf6d86c345b0a3ddd3d8375261e52fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPZ921306040.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80e0365c36d64b0603b185c779e376074c1f21751807e0207f93c6fac461334. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPZ921315531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54100997b01675f768b5f581ecca146d24763831be37e8f7022d079d13a48d7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPKI01815935.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0eee56e4d9d29266717bd5b8e61b6eb3ad5ff31b887dbdf93a97ced5fc032. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPZ921315534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198b485008850db3cc9dc9b727320be358b2e283286f125017fa7da19020a778. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPZ921315530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4c6f0120b4091a3eb98a8332c756439cf072386f2831ef02972fb08ee4ef25. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPZ921315538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c36de0a4bd91d42b47ec3b620c9d8b125f5065234188d6f98268d1780166a0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPKI02015220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46112fad1bd1f5ea5996a8b41adb70029933bd2525d2d89fe3ecea926628bf28. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPKI02015225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e31f00fed059ce093f4d3ea328e7cfa1f05d022452ef5678b460be968f1faf5. 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/JPKI02015228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f92496420cd3ce096d08881118aa78893fc2d354d39af0a11331c9cfb73be0a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPKI02015229.
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