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 0xa5736bf85bfdeb11e697a2593c6785202916518628e6a40da2b773dcec9075de. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71d65b3b-fb28-404a-b047-d719d7b5b9f1.json and https://artists.proofprofile.net/proofs/artist/71d65b3b-fb28-404a-b047-d719d7b5b9f1.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 0x51dfdb711b7554f418a2813768cd727be61519c649fb49163bca096c82297c73. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:16Z), 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/QZHN62329503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8ccc03c56c10da1d1102bf375d233951a899125e58cf25c412682e83da759e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:47:20Z), 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/QZWFE2485887.
Opera for Idiots: The Queen of the Night
Opera for Idiots: The Queen of the Night - Full Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb011f110bd3a5729712551c5d03ad57205758a0ce68571d1e5c3332cd7856d9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:14Z), 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/QZFYZ2552447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf2ecf30d0717de8e9aa3fe147c5ee3892789fa89e1e1296be475169b396811. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:48:24Z), 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/QZFYZ2552448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3cb0e0967bdbb59748e0a2b186905858cce7acd951efa64616d846ea7cbaea. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:51Z), 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/QZK6L2518247.