CoinDesk Podcast Network

Blockspace: Google Updates Quantum Timeline, Bitdeer’s 180MW AI Site, Sen Warren Targets Trump + Bitmain

Mar 31, 2026
Alex Pruden, Project Eleven researcher on quantum threats to Bitcoin; Jameson Lopp, Bitcoin security engineer and custody expert; Marty Bent, political commentator on crypto legislation. They discuss Google’s accelerated post-quantum timeline and what that means for Bitcoin cryptography. They cover AI agents as growing security risks and practical hardening. They unpack Warren’s pressure on Bitmain and Bitdeer’s 180MW AI site in Norway.
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ADVICE

Enable Bitcoin Payments By Default

  • Cash App and Square turned on Bitcoin payments by default for US Square sellers to make Bitcoin acceptance seamless and wallet-agnostic.
  • Sellers can receive USD by default or keep BTC, and roll-out will occur over roughly a month across millions of terminals.
INSIGHT

Majority Of Holders Facing Negative P&L

  • On-chain metrics show 55.62% of Bitcoin supply currently in profit, indicating many holders are underwater and stress may precede deleveraging events.
  • Glassnode's supply-in-profit metric fell from 61% on March 15 to ~55.6% as of the episode, impacted by ETF and off-chain flows.
INSIGHT

Stablecoin Policy May Beat Bitcoin In Horse Trading

  • Lobbying on Capitol Hill is producing trade-offs where stablecoin interests may win de minimis tax exemptions while Bitcoin exemptions are sidelined.
  • Sources report some lobbyists prefer stablecoin-only de minimis to avoid political optics of a Bitcoin 'handout'.
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