Stellar plans quantum-safe signers for all accounts by 2027 as QPP targets Ed25519 risk

Stellar Development Foundation introduced QPP, a roadmap to move the network toward quantum-safe signing without forcing users to abandon existing G-addresses. Soroban contract accounts are slated to get post-quantum signature verification in 2026 via ML-DSA-44 and ML-DSA-65 host functions, while a 2027 protocol upgrade would let every classic account add a quantum-safe signer. The hard part is activation: deprecating Ed25519 could freeze dormant accounts, so SDF is pushing that cutoff into community design and threat-timeline decisions.

TLDR by @Benthic

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