📖Introduction
What is Cronos EVM, why build on it, and how it fits in the Cronos universe.
What is Cronos EVM?
Cronos Network is a EVM compatible blockchain delivering sub-cent, sub-second 24/7 global settlement, built for financial services and tokenized real-world assets.
As a leading blockchain ecosystem, we have partnered with Crypto.com and more than 100 application developers and contributors representing an addressable user base of more than a 150 million people around the world.
Transaction fees are paid in Cronos ($CRO), a blue chip cryptocurrency.
The Cronos universe
The Cronos universe encompasses 2 chains: Cronos EVM, the leading Ethereum-compatible blockchain built on the Cosmos SDK; Cronos POS, a leading Cosmos chain for payments and NFTs.
The Cronos Mainnet was launched on 8 November 2021. Cronos runs separately from the Cronos POS Chain, a Cosmos proof-of-stake chain also powered by $CRO.
Why build on Cronos EVM?
If you are a Web3 application creator, there are 3 main reasons to build on Cronos:
EVM compatible: Solidity and all the EVM tools just work out of the box.
Strategic partnership with Crypto.com: easy on-ramp to your dapp.
#CROFam: a highly engaged user and builder community of >150 million people worldwide, who are keen to try the latest and greatest apps.
As an application founder/developer on Cronos, you can leverage:
Wrapped versions of most of the world's top 50 cryptocurrencies
30+ leading wallets (including Crypto.com Defi Wallet, Rabby, MetaMask, Trust Wallet)
IBC cross-chain connectivity to Cosmos chains.
Convenient Ethereum developer tools (Solidity, Truffle, Hardhat, OpenZeppelin, Web3.js, ethers.js, ChainSafe Gaming SDK, etc.).
Cronos Technology Overview
The Cronos blockchain protocol is an open-source project based on:
Ethermint, an open-source Cosmos application module that allows the portability of the Ethereum Virtual Machine (EVM), its go-ethereum client, and its solidity-based smart contracts to the Cosmos ecosystem.
Cosmos SDK, the leading development framework to build interoperable sovereign blockchains.
Tendermint’s Core BFT Proof-of-Stake consensus engine, a scalable and energy-efficient blockchain consensus.
The open-source Cronos blockchain protocol is fast, cheap, and energy-efficient.
Going forward, Cronos aims to leverage the best of what the Ethereum/EVM and Cosmos ecosystems both have to offer for end-users and developers.
Cronos Consensus
The Cronos consensus is commonly referred to as a proof-of-authority (POA) consensus, as it is a permissioned variant of the proof-of-stake consensus.
Please refer to the Cronos repository for details.
Tendermint was selected by Cronos as the underlying technology for several reasons:
Backed by formal research
Robustly tested implementation
Strong track record: Tendermint has been in continuous development since 2014, and has been adopted by several high-profile projects
Modular architecture: It offers flexibility regarding which applications are developed on top of it, and how they are developed.
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