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 0xbe582323b9f7a92faf46dc1ea7a4f95a9ef8bfcacb39422c318dc066aa1514f7. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c75dca1c-6e68-4665-ade1-e0a664db5803.json and https://artists.proofprofile.net/proofs/artist/c75dca1c-6e68-4665-ade1-e0a664db5803.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 0x524d256124e07d12f74b67836ea37d7d219933652e36ab032c3bb6971b30abba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM2PV1836378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d256124e07d12f74b67836ea37d7d219933652e36ab032c3bb6971b30abba. 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/QM2PV1836378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6276b0d43dab58e132c3a0a58bb25133df582a05db76a2bcdbd3d222e5058d2. 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/QZFZ62069026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4bbcb8b4289b310042db7c3820ce72fde839ce03490d8743ed2bc36ad407c6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFYX2498791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5577007e621cbbbae26b61afbd41a28d521f89fb0f71187f9bc87374840f2. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZNWZ2414783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846432d0bcb109f376f3cdef940724134828cbcbcdf4cf94e2d29fbf3c921cec. 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/NZPB12402917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e6f32648a2e7b9429a2e412533b62744c29d4b474a4b690e0abda343ab5591. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:01Z), 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/NZPB12403763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7aabd8354be15d21d3604373cdd7c875b4992ee6631b3e1cfdc948adcb7fa6. 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/NZPB12403766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dfc3dd1c37dc19c96608c3ee0ef50aca18d20de0f0cae9ca74b1d98ef916b5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:30:30Z), 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/NZPB12501949.