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 0x6bf6fdb1cc502086bd68d52222c23cbf6c49177d8a0a9ed4a99b67ae8f7b8433. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/326e4134-94da-4ff8-9b02-1a9a92ae8c05.json and https://artists.proofprofile.net/proofs/artist/326e4134-94da-4ff8-9b02-1a9a92ae8c05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
pretzel of love (Original Television Soundtrack, Pt. 23)
Bravo, My Life OST Part. 38 (Soundtrack)
요조신사 마초숙녀 (Original Webtoon Soundtrack) Pt. 22
오, 보이! (Original Television Soundtrack), Pt. 26
PETER PANDA (Original Webtoon Soundtrack) Pt.28
가짜 공녀님의 만렙 토끼 (Original Television Soundtrack), Pt. 4
악녀로 살라신다 (Original Television Soundtrack), Pt. 19
베이비 드래곤 (Original Webtoon Soundtrack) Pt. 13
잉어님과 떡볶이 (Original Television Soundtrack), Pt. 27
버려진 왕녀는 반역한다(Original Webtoon Soundtrack) Pt.24
사랑도 없이 결혼 (Original Television Soundtrack), Pt. 12
죽이고 싶은 나의 전복 왕자님 (Original Television Soundtrack), Pt. 8
뱀은 꽃을 먹는가 (Original Webtoon Soundtrack) Pt.9
A Profitable Cage OST Part.37 (Soundtrack)
마피아 보스가 나에게 집착한다 (Original Webtoon Soundtrack) Pt. 28
터치터치 그대 (Original Webtoon Soundtrack) Pt. 20
여왕의 집 (Original Television Soundtrack) Pt.13