Ethereum and Base Split on Wallet Standards After Months of Deadlock

A Failed Agreement Leaves Developers Caught Between Two Standards

After months of negotiations failed to produce a shared solution, Ethereum and Base are now advancing competing wallet standards – EIP-8141 on Ethereum’s side and EIP-8130 backed by Coinbase’s Base network. The split means developers building wallets and applications that operate across both networks will have to navigate two distinct transaction systems instead of one unified framework.

The divergence isn’t a minor technical footnote. Wallet standards govern how transactions are structured, signed, and broadcast across a network. When two major ecosystems adopt incompatible versions of those rules, the friction lands squarely on the builders and users who move between them daily.

What EIP-8141 and EIP-8130 Actually Mean

Ethereum’s EIP-8141 represents the direction the main network’s development community settled on after the talks collapsed. Base, the Layer 2 network operated with Coinbase’s backing, is moving forward with EIP-8130 instead. Both proposals aim to standardize how wallets interact with decentralized applications, but they do so through different technical approaches – and those differences are now hardening into separate implementations rather than converging into one.

The practical consequence shows up most sharply for multi-network wallets. An application designed to work on both Ethereum mainnet and Base will need to account for two different transaction formats. That isn’t impossible to engineer around, but it adds layers of complexity – more code paths, more potential failure points, and more testing overhead for every team building cross-chain tools.

For end users, the split is likely to be invisible at first. Wallets will absorb the complexity behind interfaces that still look the same. But when something breaks – a transaction that fails to route correctly, a signature that one network accepts and another doesn’t – the underlying incompatibility becomes the source of the problem, even if it’s never labeled that way in an error message.

The talks between the two camps lasted months, which signals that both sides understood the value of alignment. The fact that they ended without agreement points to something more substantive than a procedural disagreement. Technical standards disputes at this level typically reflect genuine architectural differences in how each network’s developers expect the ecosystem to evolve.

Coinbase’s Role and What Base’s Choice Signals

Base is not a neutral party in the Ethereum ecosystem. Coinbase, one of the largest publicly traded cryptocurrency exchanges in the United States, built Base as its own Layer 2 network. When Base’s team backs EIP-8130 over the standard Ethereum’s mainnet is adopting, it carries more institutional weight than a typical developer disagreement. Coinbase has the resources and user base to sustain a separate standard even if it remains the minority approach.

That dynamic raises a question worth sitting with: does Base’s independence from Ethereum mainnet’s standard-setting process reflect a broader appetite for autonomy, or is this a one-off disagreement that will get resolved quietly through future compatibility patches? The answer matters for anyone building infrastructure across both networks.

The Broader Cost of Fragmentation in a Multi-Chain World

The Ethereum and Base split arrives at a moment when the multi-chain environment is already demanding more from developers than ever before. Teams building cross-chain applications already manage different gas models, different bridge mechanisms, and different security assumptions between Layer 1 and Layer 2 networks. Adding non-compatible wallet standards to that list increases the coordination burden in a space where developer bandwidth is already stretched.

Wallet providers specifically face a difficult position. A wallet that serves users on both Ethereum and Base – and most major wallets do – now needs to maintain parallel implementations of core transaction logic. Smaller wallet teams without large engineering resources may find that the cost of full compliance with both standards forces them to prioritize one network over the other.

Decentralized application developers are in a similar bind. An app that works cleanly on Ethereum mainnet may require meaningful rework to function correctly on Base if the wallet interaction layer behaves differently. That’s extra time, extra testing, and extra risk of edge-case bugs that only surface when a user happens to be on the non-primary network.

What makes the situation particularly difficult to resolve quickly is that both EIP-8141 and EIP-8130 are now moving into active development on their respective networks. Standards that get implemented and deployed become progressively harder to walk back – adoption builds up around them, dependent code accumulates, and the cost of switching rises with every passing month. The window for a negotiated middle ground was the period that just ended.

For developers evaluating which network to prioritize as a primary deployment target heading into late 2026, the wallet standard each network uses is now a real factor in that calculation – not a peripheral concern but a core architectural choice that shapes how much of their codebase they own outright versus how much they’re building to accommodate two divergent ecosystems at once.