In the rapidly evolving world of blockchain interoperability, two of the most prominent platforms—Ethereum and Base—have recently announced that they will no longer pursue a unified wallet standard after months of intensive discussions. The decision marks a significant shift in how developers, wallet providers, and end‑users will need to approach cross‑chain transactions, especially as each network now backs a different Ethereum Improvement Proposal (EIP). Ethereum is moving forward with EIP‑8141, a proposal that aims to streamline transaction handling on its mainnet and compatible layer‑2 solutions. Meanwhile, Base, the layer‑2 network launched by Coinbase, has thrown its support behind EIP‑8130, a separate specification designed to address the unique requirements of the Base ecosystem.
The divergence means that wallets and decentralized applications (dApps) that wish to operate seamlessly on both Ethereum and Base will have to accommodate two distinct transaction formats, signing mechanisms, and fee structures. ### Background on the competing standards EIP‑8141 was introduced to improve the user experience on Ethereum by standardising the way transaction data is encoded, signed, and broadcast. Its primary goals include reducing gas overhead, simplifying contract interactions, and providing clearer error messages for developers.
Proponents argue that a single, well‑tested standard across the Ethereum ecosystem can accelerate adoption, lower development costs, and minimise the risk of fragmented user experiences. On the other hand, EIP‑8130 was drafted with Base’s specific architecture in mind. Base operates as an Optimistic Rollup, inheriting many of Ethereum’s security guarantees while offering faster finality and lower transaction fees.
The Base team identified several pain points that were not fully addressed by existing Ethereum standards, such as the handling of batch transactions, cross‑rollup messaging, and nuanced fee calculations that reflect Base’s unique gas pricing model. EIP‑8130 therefore introduces a set of extensions to the core transaction format, enabling more efficient batch processing and tighter integration with Coinbase’s custodial services.
### Why the talks fell apart The two standards were initially seen as complementary, with the hope that a joint working group could converge on a single specification that satisfied both networks. Over several months, representatives from Ethereum’s core developers, the Base engineering team, and major wallet providers exchanged proposals, conducted test‑net experiments, and drafted compatibility layers. However, fundamental technical disagreements emerged. Ethereum’s community emphasised backward compatibility and minimal changes to the existing transaction schema, while Base’s engineers pushed for more aggressive modifications to support high‑throughput rollup features.
Another sticking point was governance. Ethereum’s EIP process is highly transparent and community‑driven, requiring broad consensus across multiple client implementations before a change can be merged.
Base, being a product of Coinbase, operates under a more centralized decision‑making model, allowing faster iteration but less community oversight. The differing expectations around how quickly a standard could be finalised and deployed created friction that ultimately could not be reconciled.
### Implications for wallets and dApps For wallet developers, the split means they must now implement dual support. A wallet that previously relied on a single signing flow will need to detect whether a user is interacting with Ethereum or Base and then apply the appropriate EIP logic. This could involve maintaining two separate code paths for transaction construction, fee estimation, and signature verification. Some wallets may choose to abstract the complexity away from users, presenting a unified interface while handling the underlying differences behind the scenes.
However, this adds development overhead and increases the potential for bugs. Decentralised applications that aim to be multi‑chain will face similar challenges.
Smart contracts deployed on both Ethereum and Base will need to be aware of the differing transaction formats when interacting with off‑chain services, such as oracles or payment processors. Developers may need to write adapter contracts or middleware layers that translate between EIP‑8141 and EIP‑8130 data structures.
In practice, this could slow down the rollout of new features, as each change must be tested across two standards. ### Potential workarounds and future outlook The community is already exploring mitigation strategies. One approach is the creation of a “shim” library that sits between wallets/dApps and the underlying blockchains, automatically converting transaction payloads as needed. Another possibility is leveraging meta‑transactions, where a relayer on one chain submits a transaction on behalf of a user on the other chain, effectively bypassing the need for the user to directly handle the native transaction format.
Long‑term, there is still a chance that the two standards could converge. Both EIP‑8141 and EIP‑8130 are open‑source proposals, and future revisions may incorporate lessons learned from each other’s implementations. Collaborative efforts such as the Interoperability Working Group, which includes members from multiple layer‑2 projects, could eventually produce a higher‑level abstraction that unifies the user experience while preserving the technical benefits of each network’s design.
### Conclusion The decision by Ethereum and Base to pursue separate wallet standards—EIP‑8141 and EIP‑8130 respectively—represents a pragmatic response to deep‑seated technical and governance differences. While it introduces added complexity for wallet providers and dApp developers, it also underscores the vibrant innovation occurring across the Ethereum ecosystem and its extensions. In the short term, developers will need to adapt their tooling, embrace dual‑standard support, and possibly invest in middleware solutions to ensure a smooth user experience. Over the longer horizon, the industry may still find pathways toward greater harmonisation, driven by the shared goal of making cross‑chain interactions as seamless as possible for end‑users.