Jusant is a 2023 puzzle platform game developed and published by Don't Nod. The player controls a lone wanderer as they climb a desolate tower, filled with the artifacts of civilizations long past. Th
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 0x62474d2cc9c121e9919e895c531457a868a283ae99b0525bcf161917f99ceff3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ee26276-58ac-4db4-a591-03e5c7f04ecc.json and https://artists.proofprofile.net/proofs/artist/6ee26276-58ac-4db4-a591-03e5c7f04ecc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).