Solidity

Moonriver is a companion network to Moonbeam and provides a permanently incentivized canary network. New code ships to Moonriver first, where it can be tested and verified under real economic conditions. Once proven, the same code ships to Moonbeam on Polkadot. Quickly deploy your new or existing Solidity DApps to the Moonriver parachain — with little or no modifications — and gain easy access to the Kusama network. By mirroring Ethereum’s Web3 RPC, accounts, keys, subscriptions, logs, and more, Moonriver minimizes the changes required to run existing Solidity smart contracts on the network. Ethereum projects can simply replicate their DApp and deploy it to Moonbeam using Hardhat, Truffle, Remix, and other popular deployment tools. Quickly deploy your new or existing Solidity DApps to the Moonriver parachain — with little or no modifications — and gain easy access to the Kusama network.

Shiden Network is a multi-chain decentralized application layer on Kusama Network. Kusama Relaychain does not support smart contract functionality by design - Kusama Network needs a smart contract layer. This is where Shiden Network comes in. Shiden supports Ethereum Virtual Machine, WebAssembly, and Layer2 solutions from day one. The platform supports various applications like DeFi, NFTs and more. SDN token holders can stake their tokens on favorite dApps so that both nominators and the dApps developer can earn SDN tokens. If you are trying to deploy Solidity smart contracts, you have 2 ways to compile your smart contract: using Ethereum tools, or using Solang (a Solidity to WASM compiler). After compiling your contract, you can deploy it on our testnet, Dusty Network.