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What is Polygon Supernet, custom sidechain networks for Ethereum

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Polygon, the popular scaling sidechain for Ethereum, has recently announced the launch of the Polygon Supernet. It is a proposal to take Polygon’s capabilities to a new level, allowing the creation of personalized networks adjusted to the needs of applications and companies that want secure, scalable and economical blockchain services. They are services that can be deployed on Ethereum or Ethereum Virtual Machine (EVM) compatible blockchains. This initiative has been developing since the presentation of Polygon Edge in May 2021.


What is Polygon Supernet?


Polygon Edge is a modular and extensible structure to develop custom blockchain networks, whether public or private, compatible with Ethereum. Using the power and flexibility of the EVM, in addition to its wide implementation in other projects, Edge opens the door for chain interoperation, a fundamental issue for the development of Web3 applications.

With the support of EVM, development tools such as Truffle, Hardhat, MetaMask, Remix or the Solidity programming language can be used in these new projects. The same goes for the universe of Web3 integration tools, like Ethers.js and Web3.js. Thanks to its “blockchain lego” architecture, Edge provides significant benefits in terms of performance, configuration, development, and deployment, compared to other solutions. In the end, the most benefited are the users.

In this context, Polygon Supernet adds greater possibilities to Edge, by offering

  1. Higher performance and scalability
  2. Greater customization capabilities, thanks to the possibility of public and private deployments, with your own configurations.

Polygon Supernet, strengthening ties in the Polygon ecosystem


Polygon Supernet works as a set of networks that act separately and are linked to the main Polygon network. In this way, each Supernet can create a bridge of interaction with Polygon and from there build bridges to other Supernets or compatible blockchain networks, such as Ethereum. Each Supernet can process your transactions autonomously, but with its own rules. All these operations are summarized within the main Polygon network, in order to generate a secure and non-tamperable history of the Supernets, which can be accessed in a decentralized way at all times.


Polygon Supernet, sidechain networks for Ethereum that you can create to suit you


In addition, the anchor also serves so that the security of each Supernet is enhanced thanks to the anchor with the Polygon Mainnet and its MATIC token. This allows Supernets to focus on aspects such as scalability or the design of specific functions for the dApp. In a way, it’s very similar to what Cosmos and its IBC protocol have created, with the difference that the Polygon ecosystem is much more widespread and supported, thanks to EVM.


Another important point is that each Supernet is a dedicated network. Thus, an application is executed on it and all network resources are focused on it. This, in addition to making greater scalability possible, facilitates a much more optimal service time for the application users.

An important point is that it allows it without neglecting interoperability between the different Supernets deployed, the Polygon Mainnet, Ethereum or any other that can be interconnected to it. In this way, the development possibilities are expanded to levels not seen until now, allowing Polygon to establish itself as a strong reference within the Ethereum ecosystem. Something vital, while Ethereum is currently unable to deploy Ethereum 2.0 and the expected sharding chains.


Scalable and autonomous networks


Another great advantage of Polygon Supernet is that it allows the creation of networks with consensus protocols, such as:

  • Sovereign supernet – In this case, the Supernet has its own set of validators (Proof of Stake or Proof of Authority). Optionally, these validators can be managed by a certified Polygon Edge partner.
  • Shared Security Supernet – This type of network is validated by recognized validators who have a staking of MATIC tokens, on the Polygon Mainnet. This serves to maintain the security of the Supernet, which is optionally managed by a certified Polygon Edge partner.
  • Supernet Rollup – It uses a system of zk-Rollups in Ethereum, to maintain the security, privacy and availability of the data that is generated and processed in the Supernet.
  • Supernet Validium – They depend on Ethereum for security, but not for data availability. Thus, the data can be stored in the Supernet itself or in Polygon Avail.

Furthermore, each Supernet can change its underlying architecture at any time. For example, a Supernet might decide to start as a sovereign Proof of Authority network, then migrate to Proof of Stake, and finally to a full Layer 2. Polygon Edge already offers an easy upgrade from Proof of Authority to Proof of Stake and the same will be offered for Layer 2 solutions.

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