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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c91bb57f40214010c32796e2bbb8caf6fe5bd5c56152a24b28ebe449185ada. 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/42806186-f2fd-449c-9499-60d999b97edc.json and https://artists.proofprofile.net/proofs/artist/42806186-f2fd-449c-9499-60d999b97edc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Waiting_Catholic Hymns Piano Recital 1 (Pauline Music)
The Cross of Salvation_Catholic Hymns Piano Recital 2 (Pauline Music)
I Am the Resurrection and the Life_Catholic Hymns Piano Recital 3 (Pauline Music)
Queen of Heaven (Salve Regina)_Catholic Hymns Piano Recital 4 (Pauline Music)
I Believe_Catholic Hymns Piano Recital 5 (Pauline Music)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34442b2e11cfba6388c3f80529c62b3c39e24206dbcf3ea25cb516cd12b6b06a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRMIM2336719.
Where Joy and Peace Overflow_Catholic Hymns Piano Recital 8 (Pauline Music)
사랑의 하느님_Catholic Hymns Piano Recital 6 (Pauline Music)
Easter_Catholic Hymns Piano Recital 7 (Pauline Music)
Welcome to Samdal-ri (Original Television Soundtrack) SPECIAL
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b81cde56a9b7a5fb7af5052f49945cf59b8b4ae404002d3079a462b0bc8b820. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2410761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc49c736cf348c6819d521b78fa56ac9c6b0736f4f9f50cda33831978f7efeac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRMIM2410782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a397bfe2fece66c3a943660438f28fb7bf566fc7834d240831c3723270a4416. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/KRMIM2410788.