DJ Boy (DJボーイ) is a 1989 beat 'em up arcade video game developed and published in Japan by Kaneko and in North America by Sammy. DJ Boy, also known as DJ Kid, was partially based on the hip hop cultur
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 0x559758bb2123d2a703d2fa17d9f67e7d7b9f9e4e9284fd83f656bc2275419034. 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/d5cbaf40-0696-43d2-933e-bc7fcca54681.json and https://artists.proofprofile.net/proofs/artist/d5cbaf40-0696-43d2-933e-bc7fcca54681.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).