Glossary

//TODO: add links to docs.rs

Definitions of all Iroha-related entities can be found here.

DEX

A decentralized exchange (DEX) is a marketplace for cryptocurrencies or blockchain investments that is totally open sourced. Nobody is in control at a DEX, instead buyers and sell deal with each other on a one-on-one basis via peer-peer (P25) trading applications. source

In Iroha DEX represented as a module with a set of Iroha Special Instructions and Queries.

Order

Is a proposal to transfer (to or from) some assets inside Iroha implemented via trigger.

Iroha Query

Iroha read-only request to the World State View.

Iroha Special Instruction

Iroha provides a library of smart contracts called Iroha Special Instructions (ISI). To execute some logic on the ledger, these smart contracts can be invoked via either transactions or registered event listeners.

Out of the Box Iroha Special Instruction

Iroha provides several basic Instructions for utility purposes or domain-related functionality out-of-the-box:

Utility Iroha Special Instruction

This set contains logical instructions like If, I/O related like Notify and compositions like Sequence. They are mostly used by custom Instructions.

Domain-related Iroha Special Instruction

This set contains domain-related instructions (asset/account/domain/peer) and provides the opportunity to make changes to the World State View safely.

Custom Iroha Special Instruction

These Instructions provided by Iroha Modules, clients or 3rd parties. They can only be build on top of the Out of the Box Instructions.

World State View

In-memory representation of the current blockchain state.

Trigger

Triggers are Iroha Special Instructions registered on peer. Their execution depends on some conditions, for example on the blockchain height, time or query result.