A Google Quantum AI white paper dated March 30–31, 2026 argues that attacking Bitcoin-style elliptic curve cryptography could require far fewer quantum resources, sharpening focus on a 2029 migration target. The paper discusses scenarios including ~nine-minute key recovery from a broadcast transaction, a modeled 41% chance of pre-confirmation hijack, and estimates that about 6.9 million BTC (around 32% of supply) may be exposed when public keys are already revealed.

Bitcoin (BTC) moved into the Rainbow Chart's "Fire Sale!" zone by March 31, marking its first return to that band since the late-2022 FTX-driven capitulation. At the time of reporting, BTC was around $67,023, with the drop attributed to institutional selling and a pause in Strategy Inc.'s weekly purchase announcements. Some analysts see a higher chance a cycle floor is forming, while a 50/200-day SMA death cross on the 3-day chart is cited as a downside risk.

SWIFT says it is building a working version of a shared-ledger system that lets banks coordinate cross-border payments around the clock using tokenized deposits. The organization expects an MVP to process real transactions later this year while keeping existing banking rules and compliance frameworks in place.

MemeCore's M token gained more than 39% over the past week, trading above $2.30 and lifting its market cap to just over $3 billion after the March 25 hard fork. The upgrade cut gas fees from 1,500 gwei to 15 gwei and added account abstraction plus improved EVM compatibility, while Maxi Doge's MAXI presale reached $4.72 million at a listed price of $0.0002811.

U.S. Senators Bill Cassidy and Cynthia Lummis introduced the “Mined in America Act” to expand domestic Bitcoin mining and increase U.S.-made mining hardware. The proposal would add a voluntary certification program, limit equipment linked to foreign adversaries, and place a Strategic Bitcoin Reserve under Treasury policy. The U.S. currently accounts for about 38% of global mining power while roughly 97% of mining hardware comes from China.

Franklin Templeton's SOEZ Solana ETF recorded a $1.50M inflow on March 25, 2026, a single-day addition equal to about 15.9% of its $9.60M assets under management. The move came as SOL was cited as down roughly 33.5% over the prior three months and trading near $83.06, while SOEZ shares were listed around $14.34 by March 30.

A research paper involving Google warns that sufficiently advanced quantum computers could eventually break elliptic-curve cryptography used by major blockchains, adding pressure to Ethereum's post-quantum transition plans. The authors estimate 1,200–1,450 logical qubits could crack secp256k1 within minutes, with an “on-spend” attack window potentially as short as 9–12 minutes. Ethereum’s roadmap is expected to take years as larger signatures and higher compute requirements complicate upgrades and user migrations.

Bitmine Immersion Technologies bought 71,179 ETH last week, valued at about $147 million, marking its biggest single-week purchase of 2026 and a fifth straight week of accumulation. Across the prior four weeks, it had acquired 238,244 ETH, taking the five-week total to roughly 309,423 ETH. The firm’s holdings are described at around 4.73 million ETH, with 3.14 million ETH staked.