Cassie is a feminine given name and a short form of various other given names Cassandra, Cassandro, and Cassidy mostly used in English-speaking countries. It is more rarely a surname. People and ficti
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 0xf46a91e684ac44afcfe05e0a4ad77ded9e8864107c5549810adcef9b450e5313. 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/48399255-a1f1-4175-b220-284db389beca.json and https://artists.proofprofile.net/proofs/artist/48399255-a1f1-4175-b220-284db389beca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).