Two rival Ethereum proposals aim to stop Glamsterdam breaking old contracts

The proposals aim to keep Ethereum’s planned gas changes from breaking existing contracts, using different approaches to what contracts see and what users pay.

As Ethereum developers push forward with the upcoming Glamsterdam upgrade, ensuring backward compatibility has emerged as a top technical priority. Core developers have identified several legacy smart contracts that risk becoming unexecutable due to fundamental changes in opcode pricing and gas execution mechanics. The primary challenge stems from how historical contracts hardcoded gas limits, assuming operational fees would remain static indefinitely.

To address this critical issue, two competing Improvement Proposals have taken center stage. The first proposal advocates for an execution-layer translation mechanism that modifies the internal gas logic visible only to the contract runtime. The second proposal takes a transaction-level approach, recalculating base costs dynamically at the user level to shield older bytecode from gas spikes. Both paradigms present trade-offs between node performance, developer complexity, and protocol security.

Community feedback remains split as node operators and protocol engineers weigh the risks. If left unaddressed, thousands of immutable decentralized finance (DeFi) protocols and decentralized autonomous organization (DAO) vaults created years ago could become permanently stuck. Over the coming weeks, core developers will run extensive testnet simulations to determine which proposal offers the safest path forward for the Ethereum ecosystem.

This article does not constitute investment advice. The content provided here is solely for informational purposes and reflects the results generated by TradeitKN's AI analysis system. Before making any financial decisions, you should conduct your own research or consult with a licensed financial advisor.