KEY TAKEAWAYS
- The Cronos mainnet will undergo the Smarturn Upgrade on October 30, 2025, enhancing the Ethereum Virtual Machine (EVM) with new features.
- Smart accounts introduced via EIP-7702 will allow Externally Owned Accounts to function like smart contracts, enabling advanced account abstraction.
- Transaction processing and interoperability improvements include mempool enhancements and adoption of the latest IBC v2 architecture.
The Cronos mainnet is scheduled to undergo a significant upgrade, known as the Smarturn Upgrade, on October 30, 2025. This update introduces a range of protocol enhancements across the Ethereum Virtual Machine (EVM), including smart accounts, new opcodes, Ethereum client updates, and improved interoperability with the Inter-Blockchain Communication (IBC) protocol.
Key Features of the Smarturn Upgrade
One of the standout features of the Smarturn Upgrade is the introduction of smart accounts through EIP-7702. This Ethereum proposal allows Externally Owned Accounts (EOAs) to function as smart contract accounts. Traditionally, EOAs could only send simple transactions signed with a private key. In contrast, smart contract accounts could define custom transaction logic but required users to deploy a separate contract wallet.
EIP-7702 bridges this gap by enabling EOAs to act like smart contracts, allowing for advanced account abstraction. This includes programmable wallet logic, bundling multiple transactions for single-operation execution, and applying custom permission rules. These enhancements are achieved without the need to migrate funds or change account types.
Additionally, the Cronos EVM’s virtual machine will be upgraded to run on go-ethereum v1.15.11, aligning with Ethereum’s Cancun and Prague fork roadmap. This update introduces new EVM opcodes such as TSTORE, TLOAD, and MCOPY, which enhance efficiency and reduce gas costs for contracts requiring temporary data storage.
Enhancements in Transaction Processing and Interoperability
The Smarturn Upgrade also includes improvements to the Cronos mempool, allowing for transaction replacement support. This feature enables users and decentralized applications (DApps) to replace pending transactions with higher gas prices or priority fees, facilitating predictable “speed-up” and “cancel” functionalities. This enhancement is particularly beneficial for wallets, trading bots, and DeFi protocols operating under dynamic gas markets.
Furthermore, the upgrade to ibc-go v10.1.1 adopts the latest IBC v2 architecture, improving cross-chain performance and simplifying developer integration. This update streamlines chain communication by removing redundant channel and connection handshakes, reducing latency, and supporting token transfers and callbacks middleware.
These updates are part of Cronos’s ongoing efforts to build faster, smarter, and more interoperable infrastructure. For more detailed information, the full Cronos v1.5.0 changelog can be accessed here.
Why This Matters: Impact, Industry Trends & Expert Insights
The Cronos mainnet is set to undergo the Smarturn Upgrade on October 30, 2025, introducing enhancements such as smart accounts and improved interoperability with the IBC protocol.
Recent industry reports indicate that interoperability remains a crucial trend, allowing different blockchain networks to communicate and interact seamlessly. This is vital for the growth of decentralized finance (DeFi) and broader blockchain adoption. This aligns with Cronos’s efforts to enhance cross-chain performance and developer integration through the Smarturn Upgrade.
As per insights from a Cryptodnes report, EIP-7702, which allows EOAs to function as smart contracts, has raised security concerns due to increased phishing attacks and malicious contracts. This reinforces the need for robust security measures as Cronos implements similar features to enhance its EVM capabilities.
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