NU'EST W was the second sub-unit of South Korean boy band NU'EST. The group consisted of NU'EST members: JR, Aron, Baekho, and Ren, promoting in the absence of Minhyun, who at the time was promoting w
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0821e1daeffb4b271cd441c4c04dd24651dcf34b708f9a9e7cf86867bc95a8a0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63a49210-f3ce-499f-9291-07a6f7ed5701.json and https://artists.proofprofile.net/proofs/artist/63a49210-f3ce-499f-9291-07a6f7ed5701.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbc64b94c3492ff70dd4ad9f4c2e804d0e1eb2a4b9b351851bd5cc1701cb643. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/KRA871700006.
A Korean Odyssey (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1055fe45198bce6ddc9ea3c3aa64b7d9f0185b647774b1e57dd389bb745339. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA491700420.
Let Me Out ('A Korean Odyssey' Original Television Soundtrack / Pt. 1)
Mr. Sunshine, Pt. 10 (Original Television Soundtrack)
AND I [From "Mr. Sunshine (Original Television Soundtrack), Pt. 10"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0699d186c7ad72747dc3334d5febd7d478ca5d0024294df10b916204b56e9a5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/KRA871800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856a02d0b7601ffeff9b614e69108c0f9d27d6b62458d6f9d1054247d1a389c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:10Z), 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/KRA871800028.
A Korean Odyssey (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7031b5145821a0cdd98c8b06375be522632457acbea6d3aa7361defba6e07c07. 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/KRA491700419.
Mr. Sunshine (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f213d3bd4f00895349dc0ce237767abe49052d7aa2908b91765021a031eb25. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA491800746.