Key architectural design choices define best use for any blockchain Distributed & Decentralized Uncommon Everyone is equal s •Any party can write to but only •Any party can write to / access ain les select parties can access blockchain data ch ion blockchain data •Required to forge trust & transparency across large ock iss network of parties unknown to bl erm each other to P “write” Internal blockchain or “Intranet” Some more equal than others •Only select parties can write to •Only select parties can write to to ed / access data but all can access data ion •Good for internal use wanting •Good for transparency of data iss ability shared, immutable ledger where a consortium controls a erm posted messages ak P … Distributed & Private Public Centralized …aka ability to “read” from blockchain