DJ D.O.C. is a South Korean hip-hop trio consisting of members Kim Chang-yeol, Lee Ha-neul and Jung Jae-yong. DJ D.O.C. stands for Dream Of Children. DJ DOC released their first album, Sorrow of Super
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 0xe1a17a1f4d80eba23a84d9a2d5dee0d6e6acc4b368dd200808aad56e1c14349e. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/042a8815-7a49-4da3-96a4-2e98a5783c1d.json and https://artists.proofprofile.net/proofs/artist/042a8815-7a49-4da3-96a4-2e98a5783c1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).