Polygon is a layer 2 Ethereum blockchain scaling solution that allows quick transactions and low fees, without sacrificing on security. It combines the best of Ethereum and sovereign blockchains into a full-fledged multi-chain system.

Networks Mainnet, Mumbai Testnet
Released 2017
Consensus Polygon Proof of stake (PoS)
Smart contracts Yes
Block time ~ 2.3 seconds
Smart contract language(s) supported Solidity, Vyper
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Blockchain for a decentralized future

Polygon aims to contribute to a decentralized future by enabling developers to build dApps faster, safer and cheaper. By providing the needed infrastructure it fosters the growth of Web 3 applications.