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 0x6d4aa8b32a7326ecfb1cec1e6ce84a970b9c5a2ff19bb281df58170f72f3b17c. 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/c1010279-36b9-434b-907c-c9a2ed053c33.json and https://artists.proofprofile.net/proofs/artist/c1010279-36b9-434b-907c-c9a2ed053c33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xbdb3cb89dbf3dbfe1c7696bd56220518d0bb75421726d4b1a9b1f6f772401651. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/KRA491400414.
It's Okay, That's Love, Pt. 5 (Original Television Soundtrack)
Second Love From The End (Original Television Soundtrack), Pt. 5
Second Love From The End 끝에서 두 번째 사랑 (Original Television Soundtrack), Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0411f752514855a3c046deed095ce0be39827142bf404772e8ae2295582f4480. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/KRNAR1604482.
Introverted Boss (Original Television Soundtrack), Pt. 1
Couple on the Backtrack (Original Television Soundtrack), Pt. 6
Couple on the Backtrack 고백부부 (Original Television Soundtrack), Pt. 6
About Time (Original TV Soundtrack) Part 5
About Time, Pt. 5 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc11310f045151113f9d2ccc80d2678b8f4ba93ddb69587249ab6aa96af533. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA491800573.
Dance Sports Girls (Original Soundtrack) Part.1
Her Private Life, Pt. 2 (Original Television Soundtrack)
Her Private Life (Original Television Soundtrack), Pt. 2
The Wind Blows, Pt. 5 (Original Television Soundtrack)
하자있는 인간들 (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79ce67bd71ae9d8fbad2827fa2bc51b7fe834ff592b4b52c177a240c9c857e2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/KRA381905213.
Manga Cafe 2 (Original Television Soundtrack) Pt. 1
Young Lady And Gentleman (Original Television Soundtrack), Pt.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28011232532c8a17e8c9de3c3a141db9edb2f10f94ea7791c20e27a894191978. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KSA012142846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18673b7497511e23940c18778088150b28dcb1714b290eb58582e8df0afe9766. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRA382206949.
어쩌다 전원일기 (Original Television Soundtrack) Pt. 1
Once Upon a Small Town (Original Television Soundtrack), Pt.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16acf314cbead00ffa8a56de5aa03bacc94ab338b61a4e20da2e324452bcc943. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/KRA492300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845ff6a8e8b200ff84ed6398ae736495af1e815d8c6cb619110b3bd81394228e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382502183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc82413b72b3dff3e7c1627084f5bbc0c0d6f6ef450167ae14e3f7029d61060. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRA382502184.
My lovely journey OST Part.2 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d52ab505e13a49e47600530f36f3c61dcc8357b2a121674cdf952d82807c2a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381205148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d12e5c34c38e5feac01d1d6c724dc96e78e7c6a56c65f40f8bbb8fddb4b70f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381205156.