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 0x8005f504d6318cd3839d15253d119f7ef9451b150e9ef734d0cd973d9c67019c. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd0e0355-b076-4d63-83ad-c91c7d1217dd.json and https://artists.proofprofile.net/proofs/artist/dd0e0355-b076-4d63-83ad-c91c7d1217dd.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 0x03faf0f2ad8dfdcd9fc85ce16f09e1fe641771b5143b0cd6635d5847a8b8cdb8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:30Z), 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/FRX282147009.
Deep Talk (Ost. Siapa Takut Orang Ketiga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0e0da785d896906d96cbe1a1fca09f49aded64940e31657fff338d3c49cf34. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/IDA642204181.
Never Let Me Go (Ost. Siapa Takut Orang Ketiga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699a96c114b5615f5b0bf3fd6d45910e617c998bdd176a413dca5ef038ab3fb7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/IDA642204180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e630f0266ca59ca1d518ce8f641fed0ee174b8a57df6d5860129d7a71ee8644. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:25:58Z), 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/FR59R2471463.