Hanna may refer to: People Hanna (Arabic name), a family and a male given name of Christian Arab origin Hanna (surname), a family name of Irish origin Places United States Hanna City, Illinois, a
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 0x5d9914fcdd542910860850e9d1443bd5e6608a53f4b2803d066cc8da437af5d0. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c05adec4-368e-491c-9b0b-52b5d35c94e2.json and https://artists.proofprofile.net/proofs/artist/c05adec4-368e-491c-9b0b-52b5d35c94e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).