TLDR
- Vitalik Buterin shared plans for cross-chain interoperability between Ethereum layer-2 networks
- Several Ethereum Improvement Proposals (EIPs) are on the roadmap to improve L2 compatibility
- Key proposals include EIP-3370 for a new address standard and EIP-7683 for cross-chain communication
- Buterin believes all rollups will eventually use zero-knowledge technology, but this may take 5+ years
- VanEck predicted Ethereum L2 networks could reach a $1 trillion market cap in 6 years
Ethereum co-founder Vitalik Buterin recently shared his vision for improving cross-chain interoperability between Ethereum layer-2 (L2) networks.
In posts on social media platform X, Buterin expressed optimism about solving interoperability issues and creating a smooth user experience across the Ethereum ecosystem.
Buterin highlighted several Ethereum Improvement Proposals (EIPs) that are part of the roadmap to enhance L2 compatibility. One key proposal is EIP-3370, which introduces a new address standard.
This standard would require wallets and decentralized applications to display chain-specific addresses using a human-readable prefix, making it easier for users to identify different networks.
Cross-L2 roadmap in one tweet:
* 3770 (cross-L2 addrs)
* 7683 (cross-L2 sends via liquidity providers)
* 3668 (L2 light clients)
* Cross-L2-replayable account state updatesThe above is enough already. Later, phase 2:
* L1sload/staticcall
* Keystore rollups
* Proof aggregation— vitalik.eth (@VitalikButerin) August 5, 2024
Another important proposal is EIP-7683, which aims to create a standard way for different Ethereum L2 networks to communicate and execute trades across chains.
Currently, moving assets between different networks can be complex and inefficient for users. By establishing a unified set of rules, EIP-7683 could streamline inter-chain transactions.
EIP-3668 is also on the agenda, proposing a standardized method for Ethereum smart contracts to access off-chain data. Buterin refers to these as “layer-2 light clients.”
This proposal could make it easier and more cost-effective for developers to build applications that require large amounts of data without incurring high on-chain storage costs.
Buterin mentioned additional updates to further improve cross-chain L2 compatibility, including keystore rollups and proof aggregation.
He emphasized that these initial updates are independent of specific rollup technologies, suggesting they could be widely applicable.
Regarding existing zero-knowledge (ZK) and optimistic rollups, Buterin believes that all rollups will eventually adopt ZK technology to finalize transactions to Ethereum once per slot. However, he estimates this transition will take more than five years.
The Ethereum co-founder also discussed “cross-L2-replayable account state updates,” which he had previously explained in a 2023 blog post.
This approach allows L2 networks to receive recent layer-1 state updates while maintaining security and low latency.
Buterin’s posts have generated interest in the potential for a more interconnected Ethereum ecosystem. Earlier in 2024, investment manager VanEck predicted that Ethereum L2 scaling networks could reach a $1 trillion market capitalization within six years, highlighting the significant potential of improved L2 interoperability.
In a separate but related development, Buterin recently expressed concerns about overly complicated Layer 2 scaling solutions.
He emphasized the potential risks associated with complex L2 networks and called for a more balanced approach in blockchain ecosystem development.
The blockchain community generally believes that Layer 1 networks should prioritize simplicity to minimize the risk of critical bugs and attack vectors.
As a result, Layer 2 networks are often tasked with handling more complex features and providing scaling solutions. These networks typically bundle transactions executed on a separate network and submit them in batches for validation on Layer 1, which can enhance throughput and reduce transaction fees.
As work continues on these proposals and updates, the Ethereum community will be watching closely to see how cross-chain L2 interoperability develops and impacts the broader ecosystem.
