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 0xda355c7ecd27973039f2742aff07a2ab4d469b9adf205488499be4dd58b1a305. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86334f23-c0be-4880-87f3-d69660f10567.json and https://artists.proofprofile.net/proofs/artist/86334f23-c0be-4880-87f3-d69660f10567.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 0x59ed09534be88a70462de2d1d270e2222d9fc0e155ceb3c7270e8db97fbe6aa1. 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/BRXNZ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf99f171b492555fa125deb18e8ba54221de1581df636ac7e0fda412ab0fd737. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/BRXNZ1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be0f24d442159b1d638ab21ff8527cb0c82c21c66cc2c5d6672e6670c4936b8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRXNZ1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c210dd0f06e5030529fa57c6c1c8aee8c12ef92325692738f32180b26c50901. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:43Z), 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/BRXNZ1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0af982a82787c74c2de6938ad894309f95604abd892edb3bce3bd30075e526d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BRXNZ1900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c5b94785cb8d26c5f0993c3c6cfa3947eeb550f0dad92010c916b325db3bd. 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/BRXNZ1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7531bdcdd08dcbf04d9c4b14f59eddf60819039aabc4e7c0813af50f6e17a6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRXNZ1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf98fb04f79141c017f7979e4cbcb01e7e3fb6f789a8f7f60d42b0760007495. 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/BRXNZ1900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cf0839653a4fce4395f3571b7818cb203d40cd1b919aeabdd29036d4e7ac17. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BRXNZ1900053.