ZKlink

Yasint
3 min readNov 8, 2023

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zkLink is a multi-chain L2 network designed for trading purposes. It is secured by ZK-Rollups and is a new solution for connecting various L1 chains and L2 networks, enabling developers and traders to leverage unified liquidity from isolated chains. The ecosystem is designed to provide a secure and seamless user experience, contributing to a more accessible and efficient decentralized finance (DeFi) ecosystem for everyone.

One of the key innovations of zkLink is its use of zero-knowledge technology for multi-chain interoperability. The trustless and decentralized separation of powers design ensures the security of assets and trades, as well as multi-chain data transits. Moreover, the system eliminates the disparity among stablecoins from different blockchains and of different types, achieving multi-chain liquidity aggregation to form a massive stablecoin liquidity pool. This is made possible through the use of a unique protocol-controlled-debt (PCD) mechanism.

The zkLink L2 network features zero-knowledge proofs with zero security compromise. The zero-knowledge validity proofs are mathematically certified to guarantee only valid transactions are executed and cannot be manipulated or falsified. This ensures the security of funds. In the case of an attack, account states can always be rolled back because of ZK-Rollup’s on-chain data availability. Additionally, the zero-knowledge guarantees that nobody, including the platform itself, can upload fake zk_proof to the main chain.

A rigorous consensus mechanism with checks and balances is used to ensure the consistency of multi-chain states. The light oracle network independently verifies and judges the consistency of multi-chain states, and the separation of powers in the process guards against malicious behavior from any single party. The checks and balances design also protects against economic attacks from both external hackers and internal stakeholders by ensuring that no single branch has too much power.

zkLink’s L2 network also enables native asset aggregation from multiple chains. dApps built on the network can leverage seamless multi-chain liquidity, with rapid deployment solutions for decentralized and non-custodial order-book, automated market makers (AMM), derivatives, and NFT exchanges. This creates a unified currency for all purposes on the zkLink L2 ecosystem and eliminates the need for multiple wallets for separate chains.

One of the major benefits of zkLink is its focus on solving liquidity problems. The growing number of chain-agnostic L2 liquidity solutions for dApps developers with various use cases and easy-to-deploy APIs helps to overcome the limitations of segmented local liquidity. For example, zkLink supports atomic swap for order book trades (spot trading and margin trading), constant product curve and stableswap curve for multi-chain AMMs, and NFT mint/trade for multi-chain NFT marketplace.

To sum up, zkLink is a powerful trading-focused L2 network that solves a number of problems in the DeFi ecosystem. Its innovative use of zero-knowledge technology, rigorous consensus mechanism, and native asset aggregation make it a secure, efficient, and accessible solution for developers and traders alike. With its growing number of chain-agnostic L2 liquidity solutions, zkLink is poised to play a major role in the future of DeFi.

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