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 0x8866875bde8cba54df1e0c4d9e8f0722e29bdc88847874aeef76c6eafd975a73. 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/9047824a-96a1-4323-a9fd-ee2e818ee553.json and https://artists.proofprofile.net/proofs/artist/9047824a-96a1-4323-a9fd-ee2e818ee553.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x8324a2151e664c4da35e02d57d29f7d092f750a5501b5fd01330c43c6e396a65. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRZ291613349 — a six-check JSON result.
family2015 (Original Television Soundtrack), Pt.5
그래도 푸르른 날에 (Original Television Soundtrack), Pt. 4
In Still Green Day (KBS 2TV Drama) OST Part.4
다 잘될 거야 (Original Television Soundtrack), Pt. 6
My Mother is a Daughter-in-Low (SBS TV DRAMA) OST Part.21
어머님은 내 며느리 (Original Television Soundtrack), Pt. 21
여자의 비밀 (Original Television Soundtrack), Pt. 7
The Secret Of a Woman (KBS 2TV DRAMA) OST Part.7
I'm Sorry Gangnamgu (Original Television Soundtrack), Pt. 1
Shine Eun-Soo (KBS 1TV DRAMA) OST Part.11
빛나라 은수 (Original Television Soundtrack), Pt. 11
A Sea of Her Own (KBS 2TV Drama) OST Part.9
그 여자의 바다 (Original Television Soundtrack), Pt. 9
School Master, Oh Soon-Nam (MBC DRAMA) OST Part.13
훈장 오순남 (Original Television Soundtrack), Pt. 13
무궁화 꽃이 피었습니다 (Original Television Soundtrack), Pt. 14
The Roses of Sharon have blossomed (KBS 1TV DRAMA) OST Part.14
돌아온 복단지 (Original Television Soundtrack), Pt. 13
Dal Soon`s Spring (KBS 2TV Drama) OST Part.13
꽃피어라 달순아 (Original Television Soundtrack), Pt. 13
미워도 사랑해 (Original Television Soundtrack), Pt. 16
Love Returns (KBS 2TV DRAMA) OST Part.16
역류 (Original Television Soundtrack), Pt. 17
내일도 맑음 (Original Television Soundtrack), Pt. 3
Sunny Again Tomorrow (KBS 1TV Drama) OST Part.3
끝까지 사랑 (Original Television Soundtrack), Pt. 7
Love To The End (KBS 2TV Drama) OST Part.7
차달래 부인의 사랑 (Original Television Soundtrack) Pt.8
Ugly Miss Young-ae Season 17 (tvN DRAMA) OST Part.19
막돼먹은 영애씨 시즌 17 (Original Television Soundtrack), Pt. 19
Home for Summer Pt. 17 (Original Television Soundtrack)
여름아 부탁해 (Original Television Soundtrack), Pt. 17
꽃길만 걸어요 (Original Television Soundtrack), Pt. 5
우아한 모녀 (Original Television Soundtrack), Pt. 6
위험한 약속 (Original Television Soundtrack) Pt. 6
위험한 약속 (Original Television Soundtrack), Pt. 6
기막힌 유산 (Original Television Soundtrack) Pt.13
No Matter What (Original Television Soundtrack) Pt. 15
누가 뭐래도 (Original Television Soundtrack), Pt. 15
빨강 구두 (Original Television Soundtrack), Pt. 14
Beautiful Now (Original Television Soundtrack) Pt. 18
Coffee Fox Kim Sam Wol OST Part.3 (Soundtrack)
If I go back to that day, I could do better
Secret Lovers (Original Television Soundtrack), Pt.8
바이트미 (Original Webtoon Soundtrack) Pt.14
Taepung's Bride OST Part.11 (Soundtrack)
요조신사 마초숙녀 (Original Webtoon Soundtrack) Pt.12
Three Siblings Bravely OST Part.18 (Soundtrack)
오, 보이! (Original Television Soundtrack), Pt. 9
PETER PANDA (Original Webtoon Soundtrack) Pt.8
악녀로 살라신다 (Original Television Soundtrack), Pt. 1
잉어님과 떡볶이 (Original Television Soundtrack), Pt. 4
베이비 드래곤 (Original Webtoon Soundtrack) Pt. 11
우당탕탕 패밀리 (Original Television Soundtrack), Pt. 11
피도 눈물도 없이 (Original Television Soundtrack), Pt. 5
가짜 공녀님의 만렙 토끼 (Original Television Soundtrack), Pt. 27
뱀은 꽃을 먹는가 (Original Webtoon Soundtrack) Pt.3
미녀와 순정남 (Original Television Soundtrack), Pt. 11
things that are carried away by the wind
터치터치 그대 (Original Webtoon Soundtrack) Pt. 4
수지맞은 우리 (Original Television Soundtrack), Pt. 33
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3093120e37078e24a26970970f5bb2bebcca35adb24ca9b9bf5b8224c4a4030. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252402846 — a six-check JSON result.
Crazily, Only You (Original Webtoon Soundtrack), Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ed3131d36f67952a2130f291a19817ed16602da8fad9694839ef1f8f810a9d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252403340 — a six-check JSON result.
결혼하자 맹꽁아! (Original Television Soundtrack) Pt.16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68ff3368c8ce6cb05f99b39bb0defb67c3409d957e450ebf990af60310a20d0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSB012332137 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5bdb3ad509edc42dd2134a5247aba6f93a314fbf1e646e545328efe20faacf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012375877 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eb3db3348e7520dca63a619d62ae60272143e672bc3952527928390099fd2c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSB012333799 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496e6e7a921eec695583f8da361a45f8766bac5d0afbf712913bd923fd016326. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252500645 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bbd0930f238201760a3ddef55523d226d80922a660c6b63bb101d7e188febf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012384185 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd3d80afe4825acb5df47f8e0683837f285926c968d2720a8e2b6297b357a6. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012385516 — a six-check JSON result.
Catch Your Luck (Original Television Soundtrack), Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e0520a09c67d74eee6aaecb019e479db8b450ebd191ea3052100ece4e2725f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252501145 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765fed42115157d7d232d90731c3a16b11bcb8cb0bff6dc22134862748fd1161. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252501288 — a six-check JSON result.
Movie 'USURY ACADEMY' (Original Soundtrack), Take. 2
Our Music Drama Part.1 Any Moment with You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2566c005f06b3430ea89b8d962f5ccf35cdf09ebab63be5e89051c4a8d1b80. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382505527 — a six-check JSON result.
여왕의 집 (Original Television Soundtrack) Pt.14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e783344e4dfc824af75f8bc39be8fbc9a66de860d902b6a021f6a3196f8afa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA252501633 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3686aeaa96eddd9f517af0c718c14f22079a94a1e70562194efeaf0d58981db1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012406383 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb5cc7f4794086dc570bdc9aff08ea445ea4f0d2e5520926cb1d0a5644cd948. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA002622235 — a six-check JSON result.
Movie 'Little toad, Little toad' Take. 1 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd975bd75cbe4d9ba5844419b946142e3ef404d9abf92d2a6b6bf213b6fe77af8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KSA012411126 — a six-check JSON result.