1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x91b143266d0949f06dbc53c7c5f8ec89c5e0dcf8adfd95d177629a09f8ff1855. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5383d26-8a74-44e9-beb7-ccbab203df66.json and https://artists.proofprofile.net/proofs/artist/d5383d26-8a74-44e9-beb7-ccbab203df66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Secret Healer Pt. 2 (Original Television Soundtrack)
좋은 사람 (Original Television Soundtrack), Pt. 11
A Good Person (MBC TV DRAMA) OST Part.11
오 마이 금비 (Original Television Soundtrack) Pt. 2
오 마이 금비 (Original Television Soundtrack) Part. 2
20th Century Boy and Girl (Original Television Soundtrack, Pt. 4)
Love Interference Season2 (Original Television Soundtrack), Pt. 5
Love Interference Season2 연애의 참견 시즌2 (Original Television Soundtrack), Pt. 5
태양의 계절 (Original Television Soundtrack), Pt. 1
A Place in the Sun Pt. 1 (Original Television Soundtrack)
Miss Lee (Original Television Soundtrack), Pt. 3
내가 가장 예뻤을 때 (Original Soundtrack), Pt. 3
When i was the most beautiful (Original Television Soundtrack) Pt. 3
I hurt that person (Nth Romance X Jeon Sang Keun)
I hurt that person (Nth Romance X Jeon Sang Keun) (Inst.)
The distant future (From "Going to You at a Speed of 493km" [Original Soundtrack]), Pt.6
Beautiful Now (Original Television Soundtrack) Pt. 12
Romance (WEBTOON 'Discovery of Love' X Jeon Sang Keun)
Romance (WEBTOON 'Discovery of Love' X Jeon Sang Keun) (Inst.)
The Golden Spoon (Original Television Soundtrack, Pt. 9)
Spring will come after this winter - Instrumental
Why break up? (My love X Jeon Sang Keun)
Why break up? (My love X Jeon Sang Keun) (Inst.)
That day (Our Secret Diary X Jeon Sang Keun)
That day (Our Secret Diary X Jeon Sang Keun) (Inst.)
Please, Don't Go (Original Soundtrack from the Webtoon A Not So Fairy Tale)
Hidden Masterpiece Re'born Episode.5 My Room, My Heart
End of a Day, You (Original Soundtrack from Just For Meeting You)
On That Day (Jeon Sang Keun X Lulu-lala Friends)