ZKsync interoperability is a native interoperability layer that could revolutionize DeFi.
It was released yesterday ZKsync thanks to atlas Once you upgrade, everything will be allowed ZK chain interact natively DeFi on Ethereum.
This was introduced as a solution to avoid the so-called “cold start” of new chains, allowing direct access to liquidity on Ethereum while maintaining its own private environment.
Skip cold start.
Launching a new chain usually means starting with zero liquidity. It ends today.
Once the Atlas upgrade enables ZKsync interoperability, all ZK Chains can natively interact with @Ethereum DeFi.
This means businesses will leverage Prividium to leverage Ethereum… pic.twitter.com/nMuwJarGUe
— ZKsync (@zksync) December 4, 2025
What is ZKsync interop
Technically, A layer 2 protocol on top of Ethereum based on zero-knowledge proofs (ZK).
This is designed to solve the problem of fragmentation between different blockchains. ZK Networks Within the ZK rollup ecosystemelastic network” allows them to communicate and transact directly with each other at the protocol level, eliminating the need for third-party bridges that often introduce security risks and a complex user experience.
In this way, ZKsync interoperability The ZK blockchain has been more scalable, secure and interconnected from the start. safety of Ethereum No third-party tools or compromises required.
How it works under the hood:
– Assets are withdrawn to a different account on Ethereum within minutes.
– An interoperable transaction bundle is prepared and executed by depositing funds into Aave on Ethereum and borrowing GHO.
– Optionally, users can bridge borrowed tokens back to L2… pic.twitter.com/B59cdrS6NC— ZKsync (@zksync) December 4, 2025
Underlying technology
Currently, in DeFi, users, apps, and liquidity are distributed across separate chains.
This particularly leads to fragmentation of capital, as well as less experience and experience. Vulnerable to hacking due to reliance on third-party bridges.
ZKsync interoperability aims to completely change this scenario and make the entire network as “elastic” as if it were a single integrated chain.
It is based on the aptly named shared bridge. shared bridge,can Natively connect all ZK networks to Ethereum Layer 1 It can be done directly within the protocol, completely avoiding the need to use external bridges.
Additionally, it has a mechanism that allows direct communication between different ZK chains. ZK gatewaysupports seamless cross-chain transactions, such as token swaps between different chains.
Finally, it supports different levels of complexity, from simple asset transfers to atomic operations (from simple cross-chain swaps to data synchronization).
revolution
Some of the things you can do with ZK interoperability This has never before been possible without relying on third-party tools.
For example, it will be possible to natively synchronize multi-bank banking instructions, atomic post-trade confirmations for securities, etc. ISO-20022 Messages for cross-border payments.
But decentralized finance will benefit the most initially.
First of all, it is possible Ending liquidity fragmentation across different chainsEthereum, Arbitrum, Base, Solana, Cosmos, etc.
Achieve this by converting everything. ZK chain We will move into a unique and liquid environment where different tokens can be exchanged between chains. ZKsync Add another one in less than a second with one click.
You no longer need to use wrapped tokens or bridges, and you no longer need to pay different fees for each chain.
In this way, while remaining in a decentralized environment with Ethereum as the central hub, liquidity can actually be both unique and shared, similar to a centralized exchange.
However, for now, only a public demo is available to test native interoperability, but it should be available for everyone to use sooner or later.
Atlas Update: Where Did the Revolution Start?
All these are Atlas upgrade ZKsync.
This is the main upgrade. ZKsync ZK stackwas released from late October to early November. it is, ZK blockchain scalability and interoperability.
This update introduces a modular architecture that addresses the “cold start” of the new ZK Chain, allowing instant access to Ethereum L1 liquidity without bootstrapping or bridges, among other things.
surely Throughput of up to 15,000 transactions per second (TPS)and 30,000 TPS at peak Achieved during testing.
Additionally, it reduces fees to negligible levels of less than a thousandth of a dollar per transaction.
enable Native interaction between ZK Chain and DeFi on Ethereumwith this update, ZKsync interoperability Possible.
This allows users to sign transactions only with that account. layer 2while simultaneously accessing Ethereum layer-1 without a network switch.
Finally, thanks prividiumThis allows for the creation of private chains that can leverage liquidity on Ethereum while maintaining their own isolation.
This update was directly praised by Ethereum's co-founder Vitalik Buterin as an important step towards Secure and interoperable ZK scaling.
ZKsync has done a lot of valuable and underappreciated work in the Ethereum ecosystem. Excited to see this from them! https://t.co/coZKCfsb8h
— vitalik.eth (@VitalikButerin) November 1, 2025
