Hubi may refer to: Hubert Hurkacz (born 1997), Polish tennis player Hubert Kós (born 2003), Hungarian swimmer Hübi, a village in the Lerik District, Azerbaijan Huzhou ink brush (), a Chinese ink brus
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 0xdf83b954694d81f6f8ef35e811d3732590e7d613d4f728d69dfb8c6d2029f0c7. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa5a52b6-f994-429e-abd7-58c0a7572df7.json and https://artists.proofprofile.net/proofs/artist/fa5a52b6-f994-429e-abd7-58c0a7572df7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).