SKALE chain is a unique multichain network capable of running an unlimited number of secure, decentralized, high-performance blockchains native to Ethereum.
In a sense, SKALE is a Layer 2 scaling solution for the Ethereum blockchain, with multiple unique features like:
- EVM compatibility,
- Fully decentralized,
- Zero end-user gas fees,
- High throughput with fast block times,
- Instant finality,
- Modular, customizable, and fast L2 bridge,
- On-chain file storage and
- Pooled security with randomized node selection and rotation.
SKALE’s architecture supports an ever-expanding set of dApp-specific chains, which makes it quick and easy to set up cost-effective multichains running Ethereum-compatible smart contracts.
In essence, SKALE provides a separate blockchain for each dApp while utilizing the same validators that frequently rotate to provide the processing power needed to run the smart contracts and validate transactions. The system is similar to sharding, with the main difference being each SKALE sub-chain is a kind of shard, and each sub-chain is only loosely coupled with the rest of the whole multichain network.
It achieves this by having app-specific sub-chains (shard). The system will continue running unaffected even if one of the sub-chains malfunctions. This is impossible with the classical sharding model.
SKALE utilizes algorithms that have been mathematically and practically proven to be secure. It uses the Byzantine Fault Tolerant (BFT) consensus algorithm, accounting for up to one-third of participants possibly acting maliciously. Its leaderless consensus mitigates the possibility of collusion among network participants by ensuring that each user has an equal right to propose and commit new blocks. The nodes in the network are structured asynchronously (similar to the internet’s structure). This means that they are only loosely coupled so that the system can function normally even if some messages are not delivered on time. Threshold signatures enable efficient interchain communication and support randomness in node allocation.
SKALE is designed to be free from network healing time, meaning that transactions have instant block finality. Users no longer have to wait to confirm that their transactions cannot be altered anymore.
SKALE utilizes all the existing Solidity tooling, which is the most extensive in the blockchain space to date. It allows easier, faster, and more cost-effective development. EVM is by far the most widely used smart contract platform with best practices, design patterns, and online support. In turn, it allows for more secure development as many code design patterns have already been tested and proven secure (or otherwise).
It also means that users can use the same wallets, token standards, and tools as Ethereum.
SKALE is interoperable with Ethereum through the Interchain Messaging Agent (IMA) bridge. IMA facilitates transferring any token standard or message between Ethereum and SKALE, using BLS (Boneh–Lynn–Shacham) Threshold cryptography to secure transfers.
SKALE integrates many excellent and progressive thinking features. It improves performance, scalability, security, and additional features like native on-chain storage, native oracles, randomness generators, etc. The code is open-source and regularly audited before each push to the mainnet.
One such push is imminent with SKALE V2 mainnet that will bring fast and zero-fee chain interoperability. It paves the road for new projects already in active development on the test net, the most important being a high-level DEX, Ruby.
Version 2 also brings native FIAT onboard and offramp, which will be incredibly valuable to 3air to easily onboard clients that are not yet familiar with blockchain and crypto.
Low fees are essential for end users to make regular, small-volume transactions such as monthly subscription payments. SKALE proposes feeless transactions for the end user. It still needs gas payments on transactions for security purposes, but the sFuel has no commercial value and can not be bought. sFuel is free to claim, but only in reasonable amounts to prevent malicious attacks that have become common in low-fee blockchains lately.
Another exciting feature is protection against front-running from miners (validators). The concept uses BLS Threshold cryptography that encrypts transactions and encrypts them after they are in the block. This means that the validators don’t see the actual transactions and cannot sort or front-run them.
Overall, SKALE is one of the best-performing scaling solutions on Ethereum. The development looks sound, and the team is extremely professional and capable of delivering on an exceptional blockchain. The development roadmap is moving according to schedule and has so far avoided any real issues. The chain has already been operational for over one year, and it is getting the V2 upgrade in March 2022, which will make it interoperable with other projects, creating a robust network of dApps that work together in a safe, fast and feeless environment.
Additionally, the SKALE team welcomes the 3air project and is ready to facilitate its growth in other aspects, including providing a blockchain layer.