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 0x4ff0dfd8cdd3600becac16b76c0b78e1ea7f8926e9456607e73161066573b2db. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26db5313-3dc2-4e1c-ae17-8a739ab2a79f.json and https://artists.proofprofile.net/proofs/artist/26db5313-3dc2-4e1c-ae17-8a739ab2a79f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
For All the Good People: A Golden Ring Reunion
Music From Russia - Russian Soul - Traditional Songs Vol.2
Music From Russia - Russian Soul - Traditional Songs Vol.1
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 0x138044943de2779e815976fcf3c776e67ecf4d092aea7780792e183bb184f2f4. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QM6N21436594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5bd05f59737b52cc949aff9b5674c3049c43fd1a5473d16011aa0a58f5ac2f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6N21436595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539728e69994b6c5e3404689b45791f373e86ba983da71f3e67580545e002994. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:49Z), 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/QM4TW1547302.
Aftab, Mahtab (Iranian Pop, Rock Bands Music from 60's) on 45 RPM LP's, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a056d85f2b0f29a6d46e3bf4d07f266a479c203e070703cb93582aad6ef30f1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IRIRA1101937.