In recent weeks, two of the most prominent blockchain platforms—Ethereum and Base—have announced that they will no longer pursue a shared wallet standard after months of negotiation and technical exploration. The decision marks a pivotal shift in how developers, users, and service providers will have to handle transactions that cross the boundary between the two ecosystems. ## Background: Why a Common Standard Was Sought Ethereum, the world’s largest smart‑contract platform, has long been the de‑facto hub for decentralized finance, NFTs, and a growing array of Web3 applications. Base, a layer‑2 solution launched by Coinbase, was built to offer faster, cheaper transactions while staying anchored to the Ethereum security model.
Because both networks share the same underlying security guarantees, many developers assumed that a single wallet interface could seamlessly manage assets and interactions on both chains. The primary obstacle was the way each network processes transaction data. Ethereum’s existing wallet ecosystem relies on a set of proposals collectively known as the “Ethereum Improvement Proposals” (EIPs). Among these, EIP‑8141 was drafted to introduce a new transaction format that would improve fee estimation, support advanced transaction types, and enhance user experience.
Simultaneously, Base’s engineering team, in close collaboration with Coinbase, put forward EIP‑8130, a variant tailored to the layer‑2’s specific performance goals and its integration with Coinbase’s own custodial services. Both proposals promised benefits: EIP‑8141 would standardise a richer transaction payload across the Ethereum mainnet, while EIP‑8130 would allow Base to optimise gas usage and enable novel features such as batch processing of user actions. The industry hoped that the two standards could converge into a single, unified model that would spare wallet developers from having to maintain two separate code paths. ## The Negotiation Process Over the course of several months, representatives from the Ethereum Foundation, the Base development team, and several leading wallet providers engaged in a series of technical workshops, public comment periods, and test‑net deployments.
The dialogue was intense and collaborative, with each side presenting data on network throughput, security implications, and user‑experience metrics. Key points of contention included: 1. **Transaction Encoding** – EIP‑8141 introduced a more flexible encoding scheme that supports future extensions, whereas EIP‑8130 opted for a leaner format designed to minimise on‑chain data size on the layer‑2.
2. **Fee Mechanics** – Ethereum’s fee market is transitioning to a base‑fee model, while Base’s fee structure is heavily subsidised by Coinbase, leading to different expectations around how fees should be displayed and calculated in wallets. 3. **Governance and Upgradability** – The Ethereum community favours a slower, consensus‑driven upgrade path, whereas Base, backed by a corporate entity, can push changes more rapidly through its own governance channels.
Despite earnest attempts to reconcile these differences—such as proposing a hybrid encoding that could be interpreted by both chains—technical compromises proved elusive. The core issue was that each network’s design goals diverged enough that a single specification would either dilute the advantages of EIP‑8141 or undermine the performance gains promised by EIP‑8130. ## The Decision to Split In a joint statement released on Monday, the Ethereum Foundation announced that it would move forward with EIP‑8141 as the official transaction standard for the Ethereum mainnet and its associated test networks. Base, on the other hand, confirmed that it would adopt EIP‑8130 as its native format, citing the need to maintain optimal throughput and to stay aligned with Coinbase’s product roadmap.
The announcement made clear that the two standards will coexist, but they will not be interchangeable without explicit conversion logic. Wallet developers will now need to implement dual‑support mechanisms: one set of code to handle EIP‑8141 transactions on Ethereum, and another to manage EIP‑8130 on Base. For end‑users, the impact will be largely invisible if their chosen wallet abstracts the complexity, but developers will face additional engineering overhead.
## Implications for Wallets and dApps ### Wallet Providers Major wallet providers—MetaMask, Trust Wallet, Coinbase Wallet, and others—have already begun drafting roadmap updates. MetaMask’s engineering lead indicated that the team will release a version update within the next quarter that includes a “dual‑standard mode,” allowing the same UI to switch between EIP‑8141 and EIP‑8130 based on the active network. This mode will automatically translate transaction payloads where possible, but users may see distinct fee breakdowns and transaction metadata depending on the chain.
### Decentralized Applications dApp developers must also adapt. Applications that operate on both Ethereum and Base will need to detect the active chain at runtime and construct transactions that conform to the appropriate standard. This may involve adding a small abstraction layer in the smart‑contract interaction library, such as ethers.js or web3.js, to encapsulate the differences. For projects that rely heavily on cross‑chain bridges, the split standards could introduce additional latency, as bridging contracts will need to perform format conversion before forwarding assets.
### User Experience From a user perspective, the most noticeable change will be the way transaction fees are displayed. On Ethereum, fees will be shown in terms of the base‑fee plus tip model introduced by EIP‑1559, while on Base they will continue to be expressed as a flat, subsidised amount that Coinbase may cover partially for certain user tiers. Wallets will need to clearly label which chain a transaction is targeting to avoid confusion.
## Looking Ahead: Potential for Future Convergence While the current split appears final for the immediate future, both communities have left the door open for future alignment. The Ethereum Foundation’s roadmap includes a “modular transaction layer” concept that could, in later phases, accept plug‑in modules for alternative encoding schemes. Conversely, Base’s developers have expressed interest in a “translation gateway” that would allow EIP‑8141 transactions to be submitted to Base after on‑chain conversion, albeit with a small overhead.
In practice, such convergence would likely require a third‑party standardisation body or an industry consortium to mediate the technical trade‑offs. Until then, developers should plan for dual‑support and allocate resources for testing across both transaction formats. ## Conclusion The abandonment of a unified wallet standard between Ethereum and Base underscores the challenges inherent in aligning two fast‑moving blockchain ecosystems, even when they share a common security foundation. By proceeding with EIP‑8141 on Ethereum and EIP‑8130 on Base, each network preserves its strategic priorities—Ethereum focusing on long‑term extensibility and Base on immediate performance and user‑friendly fee structures.
Wallet providers and dApp developers will need to adapt by implementing dual‑standard support, but the broader Web3 community can still expect a seamless user experience as long as abstraction layers are thoughtfully designed. The split may be a setback for the ideal of a single, universal wallet, yet it also opens the door for innovative bridging solutions and future collaborative standards that could eventually reconcile the two approaches.