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 0x5633ed6692819691b5b218679a625c47b7fd9e4c40c15662e19dba04037d2e6e. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aec64ad4-7bc7-415e-a2d8-f25b5dbf0bcd.json and https://artists.proofprofile.net/proofs/artist/aec64ad4-7bc7-415e-a2d8-f25b5dbf0bcd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
어머님은 내 며느리 (Original Television Soundtrack), Pt. 10
My Mother is a Daughter-in-Low (SBS TV DRAMA) OST Part.10
훈장 오순남 (Original Television Soundtrack), Pt. 9
School Master, Oh Soon-Nam OST Part.9 (Soundtrack)
School Master, Oh Soon-Nam (MBC DRAMA) OST Part.9
돌아온 복단지 (Original Television Soundtrack), Pt. 11
Happy Sisters (Original Television Soundtrack), Pt. 5
Happy Sisters, Pt. 5 (Original Television Soundtrack)
역류 (Original Television Soundtrack), Pt. 10
끝까지 사랑 (Original Television Soundtrack), Pt. 20
차달래 부인의 사랑 (Original Television Soundtrack) Pt.24
여름아 부탁해 Pt. 21 (Original Television Soundtrack)
여름아 부탁해 (Original Television Soundtrack), Pt. 21
태양의 계절 Pt. 15 (Original Television Soundtrack)
태양의 계절 (Original Television Soundtrack), Pt. 15
결혼하자 맹꽁아! (Original Television Soundtrack) Pt.17
Crazily, Only You (Original Webtoon Soundtrack), Pt. 16
터치터치 그대 (Original Webtoon Soundtrack) Pt. 24
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 0x331c563a09e1d35354eb1de24d9dff90de0d9787d558b258bf3156de57901edc. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/KSA012380921.
Catch Your Luck (Original Television Soundtrack), Pt. 5
여왕의 집 (Original Television Soundtrack) Pt.4
본능적인 그대 (Original Webtoon Soundtrack) Pt.21
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbfed8c170eba1ba01f77d9bc88115cc3017f99abd54eb7121366fa52903ef4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/KSA012400071.