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 0x1b802b3af16ca0159d28f93fcd16e2d691ccdbca45b290f9b894bea9783b32f9. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a155054b-8652-4a30-85d7-3a712ab714ba.json and https://artists.proofprofile.net/proofs/artist/a155054b-8652-4a30-85d7-3a712ab714ba.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 0x2216d9ecc6c641c9d1bf9ca987f24dc4ebead783252dcfe2107bc9afa5c3725e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:54:10Z), 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/QZWFH2377335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd0f341dbc8011a8ee4d587e55d0e5b522d48544635a6ba4aa9981c1e2ceb34. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFH2377336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f964b89420bcfb83d535a1fcfc86203a53cd4b01cdff22b70c6d0891d42d5bd. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZWFH2377337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72039512078792c8865c292430e5fb79d182ada5050bb1fbbafc5fd5fcdbd790. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:01Z), 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/QZWFH2377340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca56b071d2bd5c0ee409ccb0f16be0bad5402386330d4a0c697cda02eb15fac. 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/QZFYX2407413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7619655af587d96b2df307c73d75794aaa25150dea0f0872cbd6d97c0c9f8e77. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB92454277.
Kmen Ka Mynsiem ibanpynskhem ft wanjop ft Dame
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2488dae1f6b496e94a5bbaf4a54fbd4989265b8145d89e96181d1914a96ea2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBA2468704.