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 0x78bd249011545b1a5c763601b14d76202b15bebf279dfbb4f9cda23fab1d0454. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/526d090c-3253-4e90-a823-21be4666f05f.json and https://artists.proofprofile.net/proofs/artist/526d090c-3253-4e90-a823-21be4666f05f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
pretzel of love (Original Television Soundtrack, Pt. 17)
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 0xf2b5e5fad27df521639c1f09baadc551fc1dd928c479b18795afdf00de9554ca. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNCB2185027.
Coffee Fox Kim Sam Wol OST Part.16 (Soundtrack)
Taepung's Bride OST Part.25 (Soundtrack)
Love In Eyes (Original Soundtrack), Pt.19
오, 보이! (Original Television Soundtrack), Pt. 19
잉어님과 떡볶이 (Original Television Soundtrack), Pt. 6
악녀로 살라신다 (Original Television Soundtrack), Pt. 12
Living as A Villain OST Part.12 (Soundtrack)
가짜 공녀님의 만렙 토끼 (Original Soundtrack) Pt.18
가짜 공녀님의 만렙 토끼 (Original Television Soundtrack), Pt. 18
사랑도 없이 결혼 (Original Television Soundtrack), Pt. 6
우당탕탕 패밀리 (Original Television Soundtrack), Pt. 22
Unpredictable Family OST Part.22 (Soundtrack)
피도 눈물도 없이 (Original Television Soundtrack), Pt. 17
미녀와 순정남 (Original Television Soundtrack), Pt. 21
Crazily, Only You (Original Webtoon Soundtrack), Pt. 19
Catch Your Luck (Original Television Soundtrack), Pt. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11e45732f10d6014ec7bbef78b5fe4b6b20ad6d90da6bd89759e11c068d2cec. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZNCB2149082.