Zcash has rolled out Network Upgrade 7 (NU7) on testnet, reducing block production time from 75 seconds to 25 seconds and aiming to boost throughput. The update also adds a miner-support mechanism that redirects part of transaction fees into a fund and changes fee rules to make spam-style oversized transactions far more expensive. ZEC was trading around $633.35 at the time of writing, down 4.68% over the past 24 hours.

Dogecoin saw a fresh accumulation burst as whales bought over 525 million DOGE within 96 hours while price compressed near the 200-day moving average around $0.117. U.S. spot DOGE ETF flows stayed inactive over the same window, with the last reported inflow of $860,960 dated May 18. The setup leaves DOGE at a decision point: a break above the long-term line could shift momentum, while rejection may extend the current range.

SpaceX filed an S-1 with the SEC for a Nasdaq IPO under ticker SPCX and disclosed 18,712 BTC worth about $1.45 billion, placing it among the world's top seven corporate Bitcoin holders. XRP traded in a tight $1.36–$1.37 band as Bollinger Bands compressed, while spot crypto ETFs saw -$1.1 billion in outflows and spot XRP ETFs reached $1.134 billion in total capital. Separately, Dogecoin co-creator Billy Markus replied to a $20 trillion market-cap claim on May 21, 2026, calling the idea less boring but implicitly unrealistic.

npm has revoked granular write-access tokens tied to compromised developer accounts in an effort to curb a new wave of the self-replicating “Mini Shai-Hulud” supply-chain worm. The platform also urged users to rotate secrets and move to Trusted Publishing, but researchers say infected machines can still leak data locally. The latest spike followed the compromise of the npm account “atool,” which published 637 malicious versions across 323 packages in 27 minutes.

On May 18, 2026, Coinbase CEO Brian Armstrong said commerce between autonomous AI agents could surpass the size of the human economy, arguing that this shift is "happening on Base." He pointed to Coinbase's Agentic.market and the x402 payment protocol, alongside reported activity such as 169 million transactions totaling $50,338,035.60 and 99.8% of transfers settled in USDC.

Bitcoin has pulled back toward $76,275, but its weekly setup still keeps a move toward $91,091 technically possible if support holds. The chart remains above the Bollinger Bands middle line (20 SMA) at $74,986, while on-chain data highlights 7.8 million BTC sitting at a loss near $76.7K as a potential resistance zone.

Posts on X claiming a "10 million" Ripple USD (RLUSD) "Season 1" giveaway are not tied to the XRP Ledger Foundation or Xaman and are part of a coordinated phishing operation. The campaign relies on bot networks that mass-tag users, funneling them to fake sites that prompt wallet connections and malicious signing. Community figures also warn that Ripple and the real XRPL Foundation do not run surprise token airdrops or request seed phrases.

Goldman Sachs eliminated its U.S. spot XRP ETF exposure in Q1 2026, exiting a position valued at about $154 million that had been spread across issuers including Bitwise, Grayscale, Franklin Templeton and 21Shares. Over the past week, XRP ETF net inflows totaled $60.49 million and reached $176.3 million since early April, while total AUM hit $1.18 billion as XRP traded at $1.43. In the same quarter, the bank also reshuffled other crypto-linked holdings, adding 654,630 shares of Hyperliquid Strategies Inc. (PURR) worth $3.33 million.

Bitcoin developer Jameson Lopp warned crypto holders on May 17, 2026 to adopt a “zero trust” stance toward incoming communications after a phishing method abused Google Forms notifications. He said attackers can use official-domain emails, oversized text fields, and Google Sites-hosted pages to make fake security alerts look legitimate. Lopp listed five channels he would no longer trust for inbound messages: email, phone calls, SMS, messengers, and other external notifications.