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 0x4ca90916e87347c3d693f73cd23d7a9401970b4afd26eba028aa23e38c82a931. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/122f755b-90d3-4f6d-99c7-9430d89119fa.json and https://artists.proofprofile.net/proofs/artist/122f755b-90d3-4f6d-99c7-9430d89119fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jo Duck Bai's 1st Album (When Love Is Over)
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 0x9ef385d4e451c26a9052b8bbf0ba1d99a349aa96654e326d9011af15cce8db38. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRA341565164.
Jo Duck Bai's 3rd Album (A Woman With A Foggy Flower)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40508b482282ac9a6cea419fd45d259707b0b54dd3a9f10feb464adb05b6002. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA341208459.
Jo Duck Bai's 3rd,5th Album (I'm Not Going To Sing A Sad Song)
Jo Duck Bai's 1st,2nd Album (In My Dream)
Jo Duck Bai's 5th Album (If You Come Into My Heart)
Jo Duck Bai's 9th Album (The Ninth Story)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedba44dc468fa1849a07e6d4b69955f88c9c2da23114b1e1597fd139aaf7a816. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USA370991132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26da117944a13a090e71b22e29fa73deb424bacb589b0827d786ed0eb04026d4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:10Z), 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/USA370991133.