Months of negotiation between Ethereum and Coinbase's largest layer-two network ended without agreement, leaving two incompatible transaction standards where there was meant to be one.
Ethereum and Base, Coinbase's layer-two network and one of the most active in the ecosystem, have ended talks aimed at a shared standard for next-generation wallet transactions. The negotiations broke down in the week of September 7.
Derek Chiang, an Ethlabs developer involved in the discussions, described the impasse directly: "Ethereum wanted to be the best version of Ethereum, and Base wanted to be the best version of Base, and while both sides acknowledged the benefits of ecosystem interoperability, it was ultimately secondary to the need for each chain to achieve their core goals."
Two standards, two roadmaps
Ethereum is advancing EIP-8141, known as Frame Transactions, which prioritises privacy, censorship resistance and protection against future quantum threats. The Ethereum Foundation has listed it among the features that must ship with the Hegotá upgrade later this year.
Base is advancing EIP-8130, optimised for high-volume application flexibility and compliance requirements. It is already testable on Base's Vibenet devnet and targeted for the Cobalt upgrade, with testnet and mainnet currently slated for September 2026.
Both remain drafts. Neither is live.
The cost falls on builders
The practical consequence is concrete. Any wallet provider or application developer building across both Ethereum layer one and Base will need to support two different transaction construction and approval flows rather than one. That is duplicated engineering, duplicated security review and duplicated maintenance, indefinitely.
That cost is small for a large exchange with an internal wallet team. It is not small for the independent wallet developers and infrastructure providers that most applications depend on, and it is precisely the sort of friction that slows institutional custody integration work, because custody vendors have to certify each flow separately.
Why it is worth noticing now
The timing sits awkwardly against the rest of this week. Circle's Arc network launches today with a validator roster built explicitly around standardisation and institutional interoperability. The public narrative around crypto infrastructure has been about consolidation and institutional-grade standards.
At the wallet layer, the two largest venues in the Ethereum ecosystem just went in opposite directions instead.
No token or equity showed an identifiable reaction to the breakdown, and none should be expected. This is a structural development with a multi-year cost curve, not a market-moving one. The evidence of its consequences will appear in which standard wallet providers implement first, and in whether either chain revisits interoperability once both upgrades ship.