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 0x6303c6a7cf12d8f302d34cdc8f26342e56dea5034b0b27daf43062df66d827e2. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3807b7d-303f-4b1b-8bbd-61c4a82a9187.json and https://artists.proofprofile.net/proofs/artist/d3807b7d-303f-4b1b-8bbd-61c4a82a9187.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
유은성 3집 You Eun Sung 3rd - 회복시키소서 Restore Me
유은성 4집 You Eun Sung 4th - 난 이렇게 많이 받았는데 Because I Received So Much
난 이렇게 많이 받았는데 Because I Received So Much
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 0x1a57415d8979ecdd2cbe9408655701c7b820f0b9e848863e43627492a77195b7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:50Z), 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/KRA351900169.
주의 손에 나의 손을 포개고 Resting My Hand in His (feat. 박요한 Park Yo Han)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b144d237806bb0180785207e6bb8c4187573df85e066f4bef682bcdc92087e. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/KRA351900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9d5d7a376ee613c5d7c31fc56e822fada6e47338b9cd089da30d9393137f44. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/KRA351900176.
유은성 5집 You Eun Sung 5th - 하나님만이… Only God
너로 인해 행복하게 될 거야 I Will Be Happy Because of You