Ethereum and Base Abandon Unified Wallet Standard After Prolonged Discussions

In recent weeks, two of the most influential blockchain platforms—Ethereum and Base—have announced that they will no longer pursue a shared wallet standard after months of negotiations and technical deliberations. This decision marks a turning point for developers, users, and the broader ecosystem that has long hoped for a seamless, cross‑chain experience when moving assets or interacting with decentralized applications (dApps) on both networks. ## Background: The Quest for a Common Standard Ethereum, the world’s largest smart‑contract platform, has been the birthplace of numerous token standards such as ERC‑20, ERC‑721, and ERC‑1155. These standards have facilitated interoperability, allowing wallets, exchanges, and dApps to support a wide variety of assets with minimal friction.

Building on that legacy, the Ethereum community introduced a proposal known as **EIP‑8141**. The goal of EIP‑8141 was to define a unified transaction format that would be compatible not only with Ethereum’s own execution environment but also with layer‑2 solutions and other chains that aim to be Ethereum‑compatible. Base, a layer‑2 network launched by Coinbase, quickly grew into a major hub for developers seeking lower fees and faster confirmation times while still leveraging Ethereum’s security model. To further cement its position, Base’s engineers put forward **EIP‑8130**, a variant of the original proposal that incorporated several modifications tailored to Base’s architecture, such as optimized calldata handling and specific gas‑cost adjustments.

Both proposals shared a common ambition: to reduce the need for users to switch wallets or re‑configure settings when transacting across Ethereum and Base. In theory, a single wallet could sign a transaction that would be recognized and processed correctly on either chain, simplifying the user experience and encouraging broader adoption of Base’s low‑cost environment. ## Why the Talks Stalled Despite the shared vision, the technical discussions revealed deep‑seated differences in how each network handles certain transaction attributes. Ethereum’s core developers emphasized backward compatibility and the preservation of existing security guarantees.

They were wary of any changes that might introduce subtle edge‑cases or require extensive upgrades to the Ethereum Virtual Machine (EVM). Base, on the other hand, prioritized performance optimizations and a streamlined developer experience.

Their version of the standard introduced new opcode semantics and altered the way transaction signatures are validated. While these changes promised measurable gains on Base’s roll‑up infrastructure, they also created a divergence from Ethereum’s reference implementation. The two teams attempted to reconcile these gaps through a series of working groups, joint test‑net deployments, and community feedback sessions. However, each side found that compromising on their core design principles would either dilute the benefits of the new format or jeopardize the stability of the underlying protocol.

Over time, the timeline for a unified rollout stretched from an anticipated mid‑2024 launch to an indefinite horizon, causing frustration among developers who had already begun building tooling around the proposed standard. ## The Official Announcement In a joint statement released on September 25, 2026, representatives from the Ethereum Foundation and Base confirmed that they would **pursue their respective proposals independently**. Ethereum will continue to advance **EIP‑8141**, integrating it into upcoming network upgrades and encouraging wallet providers to adopt the standard for native Ethereum transactions.

Base will move forward with **EIP‑8130**, tailoring it to the specific performance and cost characteristics of its roll‑up design. The announcement clarified that while the two standards will coexist, they will not be interchangeable without additional translation layers.

Wallet developers will need to implement support for both formats if they wish to offer a truly cross‑chain experience. Likewise, dApp developers should be prepared to handle distinct transaction signatures and gas‑estimation logic depending on whether a user is interacting with Ethereum or Base. ## Implications for Wallets and Applications ### Wallet Developers For wallet creators, the split means **additional development effort**.

Instead of a single code path that could handle transactions on both networks, they now must maintain two parallel implementations. This includes: - Supporting two distinct transaction encoding schemas.

- Managing separate nonce handling mechanisms, as Base’s approach to transaction ordering differs slightly from Ethereum’s. - Providing clear UI cues so users understand which network a particular transaction will be submitted to. Some wallet providers have already begun work on modular architecture that isolates network‑specific logic, allowing them to plug in new standards more easily in the future.

Others may choose to focus on the network with the larger user base, potentially limiting cross‑chain functionality for their customers. ### dApp Builders Decentralized applications that aim to be multi‑chain will need to **detect the user’s wallet capabilities** and adapt accordingly.

For example, a DeFi protocol that offers liquidity pools on both Ethereum and Base must ensure that the smart‑contract calls it generates are signed using the correct transaction format. Failure to do so could result in rejected transactions, lost gas fees, or even security vulnerabilities if the wrong signature scheme is applied.

Developers can mitigate these challenges by leveraging middleware services that abstract away the differences. Such services can accept a high‑level transaction request and automatically translate it into the appropriate EIP‑8141 or EIP‑8130 payload before broadcasting it to the target chain. ### Users From the end‑user perspective, the most noticeable change will be **the need to select the correct network** when initiating a transaction. While most modern wallets already prompt users to confirm the destination chain, the underlying transaction format will now be more visible in technical logs and debugging tools.

Users may also encounter slightly higher fees on one network versus the other, reflecting the distinct gas‑price models embedded in each standard. ## Looking Ahead: Potential Paths to Reconciliation Although Ethereum and Base have officially decided to move forward separately, the broader community remains hopeful that future collaborations could bridge the gap.

Some possible avenues include: 1. **Cross‑Chain Gateways** – Services that act as translators, converting EIP‑8141 transactions into EIP‑8130 format (and vice versa) on the fly. 2.

**Unified SDKs** – Development kits that expose a common API while handling the network‑specific details behind the scenes. 3. **Standard Evolution** – Both EIPs could be revisited in subsequent iterations, incorporating lessons learned and potentially converging on a hybrid approach.

In the meantime, developers are encouraged to keep an eye on the respective EIP repositories, participate in community discussions, and contribute code that eases interoperability. The blockchain space has repeatedly shown that even when standards diverge, the ecosystem’s ingenuity often finds creative solutions that ultimately benefit users.

## Conclusion The decision by Ethereum and Base to abandon a shared wallet standard after months of intensive talks underscores the complexity of achieving true cross‑chain compatibility. While the split introduces short‑term challenges for wallet developers, dApp creators, and users, it also spurs innovation in the form of new translation layers, modular SDKs, and more robust multi‑chain tooling. As both networks continue to evolve, the community’s collaborative spirit will likely yield fresh approaches to bridging the divide, ensuring that the promise of a seamless, interconnected blockchain experience remains within reach.