Bitcoin Treasury Buying Narrows as Crypto Mortgages and 401(k) Plans Advance

The latest crypto news in the last 24 hours centered on Bitcoin treasury concentration, MARA’s balance-sheet reset, and new pressure on miners as quantum-readiness timelines moved into focus. We also cover Cardano-linked tokenization, Solana’s MEV proposal, XRP derivatives, Coinbase publishes data through LINK, AI-enabled DeFi exploits, onchain market data, stablecoin reward politics, Tether reserve auditing, crypto-backed mortgages, retirement-plan access, legal and security developments, and UK and Brazil policy moves.