Ethereum and Base Abandon Shared Wallet Standard After Prolonged Discussions

The blockchain ecosystem has long been driven by the pursuit of interoperability, especially when it comes to user wallets that need to support multiple networks seamlessly. In recent weeks, however, two major players—Ethereum and the Coinbase‑backed Layer‑2 solution Base—have signaled a decisive shift away from a unified wallet standard that had been under negotiation for months.

Ethereum is now moving forward with the implementation of EIP‑8141, a proposal that introduces a novel transaction format and set of signing rules tailored to the Ethereum mainnet’s evolving needs. At the same time, Base has committed to adopting EIP‑8130, a separate specification that aligns with the design goals of the Base network and its close integration with the Coinbase ecosystem.

This divergence means that developers, wallet providers, and end‑users who interact with both Ethereum and Base will soon have to contend with two distinct transaction systems. The ramifications are significant: wallets will need to implement dual support, potentially increasing code complexity, testing overhead, and the risk of user error.

Decentralized applications (dApps) that aim to be multi‑chain will also need to adjust their backend logic to accommodate differing transaction schemas, gas fee calculations, and signature verification processes. ### Background on the Proposed Standards EIP‑8141 emerged from a series of Ethereum Improvement Proposals aimed at modernizing the way transactions are constructed and signed on the mainnet. The proposal introduces a more flexible transaction envelope that can carry additional metadata, supports advanced fee mechanisms, and improves compatibility with upcoming Ethereum upgrades such as Shanghai and later phases of the roadmap.

Proponents argue that EIP‑8141 will reduce transaction size, lower gas costs for certain use cases, and enable richer interactions with smart contracts without sacrificing security. Conversely, EIP‑8130 was drafted by the Base development team in close collaboration with Coinbase engineers. Its primary objective is to streamline transaction handling on the Base Layer‑2, which operates as an optimistic rollup anchored to Ethereum.

EIP‑8130 emphasizes fast finality, simplified fee structures, and tight integration with Coinbase’s custodial and non‑custodial wallet products. By tailoring the transaction format to the rollup’s specific execution environment, Base aims to deliver a smoother user experience and lower latency for high‑throughput applications.

### Why the Split Occurred The negotiations between the two communities began in early 2023, with the goal of converging on a single, universal wallet standard that could be adopted across both Ethereum and its Layer‑2 extensions. Early drafts attempted to reconcile the differing priorities: Ethereum’s focus on long‑term scalability and backward compatibility versus Base’s emphasis on rapid transaction throughput and tight product integration.

Over time, technical disagreements grew. Ethereum’s core developers highlighted the need for a standard that could accommodate future upgrades, including sharding and new cryptographic primitives, without requiring frequent rewrites. Base’s engineers, meanwhile, pointed out that the constraints imposed by Ethereum’s broader consensus could hinder the performance targets they had set for their rollup. Additionally, there were concerns about governance: Ethereum’s open‑source, community‑driven process contrasted with Base’s more centralized decision‑making, which is influenced by Coinbase’s product roadmap.

By mid‑2024, it became clear that a single specification would either compromise Ethereum’s long‑term vision or dilute Base’s performance advantages. After several rounds of community calls, working‑group meetings, and public comment periods, the two parties announced that they would each move forward with their respective proposals—EIP‑8141 for Ethereum and EIP‑8130 for Base. ### Implications for Wallet Developers For wallet developers, the split introduces a set of practical challenges.

First, they must implement support for both transaction formats. This involves updating the signing libraries, UI components for fee estimation, and transaction broadcasting logic. Many popular wallets already maintain separate code paths for mainnet and various Layer‑2 solutions; however, the addition of two new standards will increase the maintenance burden.

Second, user experience may suffer in the short term. Users who switch between Ethereum and Base could encounter confusing prompts about which fee model applies or see different transaction previews. Wallets will need to clearly indicate the network context and possibly provide automatic network detection to mitigate mistakes.

Third, security audits will need to be expanded. Each transaction format has its own set of edge cases and potential attack vectors.

Auditors will have to verify that signature verification, replay protection, and nonce handling are correctly implemented for both EIP‑8141 and EIP‑8130. ### Effects on dApp Developers Decentralized applications that aim to be cross‑chain will also need to adapt. Smart contract interactions that previously relied on a single transaction schema must now be abstracted to handle both formats.

This could be achieved through middleware layers that translate a unified internal representation into the appropriate on‑chain transaction type before submission. Furthermore, fee estimation services will need to provide separate APIs for each network, reflecting the differing gas models. For example, Base’s fee structure under EIP‑8130 may be more predictable due to its rollup nature, while Ethereum’s EIP‑8141 could incorporate dynamic fee markets tied to the broader network congestion. ### Community Reaction The announcement sparked a mixed response across the crypto community.

Some developers praised the decision as a realistic acknowledgment of the technical realities, emphasizing that forcing a one‑size‑fits‑all standard could have led to suboptimal performance for both networks. Others expressed disappointment, fearing that the fragmentation could slow down the broader goal of a seamless multi‑chain experience. Wallet providers such as MetaMask, Rainbow, and Trust Wallet issued statements confirming their commitment to supporting both standards. They highlighted ongoing work to streamline the user interface so that the underlying complexity remains invisible to end‑users.

### Looking Ahead While the split adds short‑term complexity, it also opens opportunities for innovation. The coexistence of EIP‑8141 and EIP‑8130 may inspire the development of adapter layers or meta‑wallets that can intelligently route transactions to the appropriate network, automatically handling the conversion between standards. Additionally, the experience gained from this negotiation could inform future attempts at standardization across other Layer‑2 solutions, encouraging a more modular approach where core transaction semantics are shared, but network‑specific extensions are allowed.

In conclusion, the decision by Ethereum and Base to pursue separate wallet standards marks a pivotal moment in the evolution of blockchain interoperability. Developers, wallets, and users will need to adjust to the new reality of dual transaction systems, but the industry’s resilience and capacity for rapid iteration suggest that robust, user‑friendly solutions will emerge.

As the ecosystem continues to mature, the lessons learned from this divergence will likely shape the next generation of cross‑chain standards, balancing the need for performance, security, and a seamless user experience.