Ethereum's public Lean Ethereum strawmap targets 10,000 TPS on L1, 1 million TPS across rollups, privacy upgrades and post-quantum security work.
Algorand plans native post-quantum accounts in Q3 2026 and broader quantum resilience by the end of 2027, including wallets, staking and consensus.
Ethereum researchers proposed an XMSS public-key registry for validators, a first concrete post-quantum migration step as Ethereum courts tokenized finance.
BIP-361 would block sends to quantum-vulnerable Bitcoin addresses, sunset legacy signatures, and put early BTC wallets at risk of being frozen if holders do not migrate in time.
Google Quantum AI said future machines could break Bitcoin's secp256k1 cryptography with far fewer resources, reviving focus on Satoshi Nakamoto's 1 million BTC as Polymarket kept pricing a higher risk premium.