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 0xc6fbc8f00cb05ce9ab1448c9f9a3e584b6a36d885efe602f8015b1ab4e79c607. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f4aeb97-81df-4f2e-b7ad-a098fb78c97c.json and https://artists.proofprofile.net/proofs/artist/3f4aeb97-81df-4f2e-b7ad-a098fb78c97c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classic for Developing my Baby's CQ (내 아이 CQ 높이는 클래식)
Classic for Developing my Baby's IQ 2 (내 아이 IQ 높이는 클래식 2)
Classic for Developing my Baby's EQ (내 아이 EQ 높이는 클래식)
Nocturne No.2 In E Flat Major Op.9-2 (쇼팽, 야상곡 2번 내림 마장조 작품번호 9-2)
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 0x5d13525fba805a5fe98666f8986e645ded22a5882d2c82881864a61b512c839a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:29:44Z), 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/KRB361433111.
Classic for Developing my Baby's IQ (내 아이 IQ 높이는 클래식)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cf6b7273dddd4fd75edef42fa02e04b44d7cb181c5b08179a93f8e45d400f5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRB361433101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd48ff779fcc78ffdd679426390a9384382831bf5f64139e80cef03361ed74f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRB361433104.
Nocturne No.2 In E Falt Major Op.9 (Chopin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa18f21e5323436f283375a71b83e850237f72a74f5a14a0e7b5dace2e420c76. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:21:10Z), 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/KRB361433105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97746fa23d1b11d214509f4e2d3045067abfc6d8686a3136ab69ac60ade35d8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:02Z), 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/KRB361433106.
Humoresque In G Flat Major Op.101-7 (Dvorak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f61f65540281891dcab3ffeaa3673090bc8c7e8d213c63291b782e35d62040. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRB361433108.