Cardano’s hard fork vote on May 29 exposes ADA’s DeFi vulnerabilities

May 21, 2026

Cardano’s upcoming hard fork vote on May 29 sheds light on the weakness of ADA in the DeFi sector. In today’s crypto markets, blockchains are no longer rewarded solely based on roadmap promises, but rather on real developer activity and DeFi engagement, which directly impacts ADA’s price performance.

The Protocol Version 11, also known as Van Rossem, has already been implemented on the Preview testnet and is set to undergo mainnet governance action submission on May 29. The timing of the implementation will be contingent on the readiness of the infrastructure. The PreProd hard fork governance action was submitted on May 8 by Intersect, but the vote on its ratification was delayed due to concerns about the readiness of Ogmios, a critical infrastructure element that could impact the May 29 mainnet target. This vote serves as a live test of Cardano governance coordination under the Conway-era framework.

Intersect characterizes V11 as an intra-era hard fork with enhancements to Plutus, ledger, and node functionality, aiming to keep Cardano within the Conway era. Throughout the transition, ADA holders will maintain full access to their wallets and tokens.

The V11 upgrade focuses on Plutus, Cardano’s smart contract scripting environment, making significant modifications to expand smart contract functionality and reduce execution costs. These changes include making built-in functions available across multiple Plutus versions, adding new built-ins like arrays and optimized multi-asset value operations, and introducing enhancements for modular exponentiation and list handling. These upgrades collectively improve script performance and make contracts easier and cheaper to run.

V11 also introduces efficient multi-scalar multiplication over BLS12-381, a widely used curve in ZK proofs, SNARK systems, and cryptographic signature schemes. By adding this feature as a native built-in, Cardano is better equipped to support applications that rely on expensive elliptic-curve operations. Modular exponentiation, another addition in V11, reduces both transaction size and execution costs for applications requiring cryptographic operations.

In terms of governance, V11 enforces VRF key uniqueness at the ledger level to prevent potential attacks from stake pool operators reusing the same VRF key. Only the Constitutional Committee and stake pool operators can vote on V11 governance actions currently, with full DRep participation expected in a later phase. The successful execution of the May 29 governance action will test the coordination between SPOs and the CC, showcasing Cardano’s governance maturity.

Cardano’s DeFi activity remains relatively modest compared to other smart contract ecosystems, highlighting the gap in adoption. With $ADA trading near $0.249 and a market cap of around $9.2 billion, the project trails behind competitors in DeFi TVL, stablecoin market cap, and DEX volume. To bridge this gap, Cardano must increase developer adoption and application volume to leverage the improvements introduced in V11 effectively.

In summary, Cardano’s V11 upgrade presents significant improvements to the network’s smart contract functionality and governance framework. The successful implementation of these changes will be crucial in driving developer adoption and enhancing Cardano’s position in the DeFi space.