What makes the smart contract on Partisia Blockchain different from contracts on other blockchains is that we allow you to add a privacy layer parallel with the immutable ledger. Specifically, you can through your contract, allocate nodes in the blockchain to handle Zero Knowledge computation. If you, for example, want to create an auction, you can keep the identity of the current bidder and account information secret and off the record, while the identity of the winner and seller will be added to the immutable record. This will secure a record of change in ownership while at the same time preserving the privacy of all interested parties that don’t give the winning bid. This principle of a combination of a privacy layer and a public record means that the Patisia Blockchain effectively replaces the trustee in binding transactions in this example.