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 0x64b47cf505aa6d099e4babd74f11377436f4d68facee98b2713eebfcfa0a7813. 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/0aa3dd20-4a4d-410a-841a-da530dcf9b36.json and https://artists.proofprofile.net/proofs/artist/0aa3dd20-4a4d-410a-841a-da530dcf9b36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Daughter Just Like You (MBC Drama) OST Part.5
딱 너 같은 딸 (Original Television Soundtrack), Pt. 5
울지않는 새 (Original Television Soundtrack) Pt.5
My Mother is a Daughter-in-Low (SBS TV DRAMA) OST Part.9
어머님은 내 며느리 (Original Television Soundtrack), Pt. 9
다 잘될 거야 (Original Television Soundtrack), Pt. 2
That Sun In The Sky (KBS 2TV DRAMA) OST Part.11
저 하늘에 태양이 (Original Television Soundtrack), Pt. 11
그 여자의 바다 (Original Television Soundtrack), Pt. 5
A Sea of Her Own (KBS 2TV Drama) OST Part.5
빛나라 은수 (Original Television Soundtrack), Pt. 20
보그맘 (Original Television Soundtrack), Pt. 3
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 0xc17c3650f6aa436f6968ed8d18a5eb15a85947948db8ac47c1b725f629d4d9d8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/KRA381801572.
The Wind Blows, Pt. 6 (Original Television Soundtrack)
The Wind Blows (Original Television Soundtrack, Pt. 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aff29727ed8e61e7a3701cc952147cd8bc4032734b4b81ff339aae316593f2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381905013.
Love Interference Season3 (Original Television Soundtrack), Pt. 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d173a3723ccfcde469b81fd7d1deaf895101974006df5a22ed3211eb35df0f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2023211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431160317415ce39cce0db9c857efe528e878d12b891fd3beeff1f508cac5d81. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRA382300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e8748dccafd44c9b2327b3fadd29bd8a1ac17e3da1b3075fc23f86afe5a156. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382302189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11e044c933d03fa617d10341108d955637418133bf3c3b14bed9b809f300c59. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRA382506556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26767eb388d5b27f46fa27b0b7b4b4012702ec704256c5a24fdc71de4cab98fe. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/KRA341747863.