Cardano Advances Quantum Security With New Wallet Proposal
Cardano has opened community review for CIP-0197, a proposal adding zero-knowledge proofs to HD wallet seed phrases as an intermediate step toward quantum security, alongside CPS-0034 for shared Plutus smart contract testing standards.
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Cardano has opened community review for two new proposals targeting network security and developer tooling as its 2026 upgrade roadmap continues to take shape.
Quantum-Resistant Wallet Security
CIP-0197 proposes post-quantum zero-knowledge (ZK) signatures for hierarchical deterministic (HD) wallets. The proposal adds ZK proofs of wallet seed phrases on top of existing signatures, described as an intermediate step toward quantum security ahead of a full cryptographic migration. The design allows users to prove ownership of a wallet's recovery phrase through a zero-knowledge proof without needing to reveal the phrase itself. A separate proposal already in active community review, CPS-0030, addresses the development of a broader quantum-secure settlement layer for the network.
Shared Plutus Testing Standards
CPS-0034 outlines a shared framework for testing Plutus behavior consistently across different node types, with the goal of reducing bugs for developers building smart contracts on Cardano. The proposal follows recent work by the Plutus team, which has added new built-in functions, improved Value support in the ledger API, and broadened the conformance test suite in recent development cycles.
Three other proposals remain in active feedback rounds. CIP-0196 aims to standardize human-readable wallet handles through a Handle Provider Registry and Resolver. CIP-0178 would allow light clients and bridges to verify a transaction without downloading a full block. A fifth proposal, CPS-0033, examines concentration risk among delegated representatives in Cardano's on-chain governance system.
Together, the five proposals reflect the range of Cardano Upgrade 2026, which spans cryptographic security, smart contract tooling, and decentralized governance.
Sources
CoinGabbar: Cardano Upgrade 2026, New CIPs Target Quantum Security
Cardano Development Updates: Plutus Core Team Update, August 2026
The Crypto Basic: Charles Hoskinson Proposes Zero-Knowledge Wallet Recovery System for Cardano
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Soumen DattaSoumen has been a crypto researcher since 2020 and holds a master’s in Physics. His writing and research has been published by publications such as CryptoSlate and DailyCoin, as well as BSCN. His areas of focus include Bitcoin, DeFi, and high-potential altcoins like Ethereum, Solana, XRP, and Chainlink. He combines analytical depth with journalistic clarity to deliver insights for both newcomers and seasoned crypto readers.