was a Japanese corporation that developed and published games for the Game Boy, Famicom, the Super Famicom, and the Sega Mega Drive during the 1980s and the 1990s. It was founded in 1986 and closed i
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 0x37153d62a0dc65a24ee757385ae555880e371045b5c5909cc91875c566e1223a. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2bc6825-2d26-4587-a92b-935b3744edb6.json and https://artists.proofprofile.net/proofs/artist/d2bc6825-2d26-4587-a92b-935b3744edb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).