The , stylized as NEO•GEO, is a video game platform released in 1990 by Japanese game company SNK Corporation. It was initially released in two ROM cartridge-based formats: an arcade system board (Mul
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 0x9a7b5ba948f20682b1b32d06dd24f9ca893422a2a8f1665dda513858c170fe2a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5144b88c-a8db-472e-a4aa-e9e62bc09c77.json and https://artists.proofprofile.net/proofs/artist/5144b88c-a8db-472e-a4aa-e9e62bc09c77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).