# Cryptocurrency post-quantum security developments > Live situation record from CLSTR: https://clstr.news/situations/cryptocurrency-post-quantum-security-developments > Updated: 2026-08-24T10:20:26.000Z. Sources: 4. Developments: 2. The cryptocurrency industry is exploring technical solutions to address the threat posed by future quantum computing to existing signature schemes. AmericanFortress proposed a post-quantum security scheme called Zero-Knowledge Proof of Seed Provenance (ZK-PoSP), which aims to allow Bitcoin, Ethereum, and Solana wallet addresses to remain unchanged by replacing traditional signatures with zero-knowledge proofs. Following these industry-wide discussions regarding the vulnerability of elliptic-curve signatures, the Cardano community has moved into a formal review stage for specific technical proposals. This includes CIP-0197, a proposal for post-quantum zero-knowledge signatures for hierarchical deterministic wallets. Similar to the AmericanFortress proposal, CIP-0197 is designed as an intermediate solution to provide quantum-resistant protection without requiring users to migrate to new addresses. ## Timeline ### 2026-08-24: Cardano reviews post-quantum security proposals for wallets Cardano is reviewing new technical proposals, including CIP-0197, which aims to provide post-quantum security for HD wallets using zero-knowledge proofs without requiring address migration. 4 sources. https://clstr.news/cluster/cardano-reviews-post-quantum-security-and-developer-tooling-proposals ### 2026-07-26: AmericanFortress unveils quantum‑safe wallet proposal for Bitcoin, Ethereum, Solana AmericanFortress proposes ZK‑PoSP, a quantum‑safe wallet scheme that keeps current Bitcoin, Ethereum and Solana addresses unchanged; most crypto chains still lack live post‑quantum protection, with only Quantum 2 sources. https://clstr.news/cluster/americanfortress-unveils-quantumsafe-wallet-proposal-for-bitcoin-ethereum-solana --- Cite as: Cryptocurrency post-quantum security developments. CLSTR, https://clstr.news/situations/cryptocurrency-post-quantum-security-developments