Stablecoin Shock: USR Collapse Exposes DeFi Fragility

Plus: 🏛️ Senate targets prediction markets, ⛏️ bitcoin miners face mounting losses.

Author

Juan Aranovich
March 23, 2026

Hi! In today’s edition:

  • 💥 USR stablecoin collapses after $25 million exploit

  • 🏛️ Senate bill targets sports betting on prediction markets

  • ⛏️ Bitcoin miners lose $19,000 per coin as pressure builds

Today’s newsletter is brought to you by Citrea!

Enter Bitcoin Capital Markets

Bitcoin’s application layer, Citrea, launched its mainnet, expanding Bitcoin’s utility to privacy, lending, BTC yields, and more.

Past efforts to build a Bitcoin ecosystem were forced to sacrifice programmability or rely on heavy trust assumptions that limited adoption. Citrea marks a new beginning: an end-to-end Bitcoin ecosystem that relies solely on the Bitcoin Network as its source of truth.

Citrea enables:

  • cBTC: The first trust-minimized Bitcoin on a fully programmable platform.

  • ctUSD: A native stablecoin for Bitcoin, allowing for unified liquidity.

  • Bitcoin Capital Markets bringing demand, and utility to the Bitcoin Network.

USR Stablecoin Depegs After $25M Exploit Exposes Critical Flaw

Another DeFi exploit has shaken confidence in stablecoins. Resolv’s USR token lost its peg after an attacker minted roughly 80 million unbacked tokens using less than $200,000 in USDC, extracting about $25 million in value.

The impact was immediate. USR plunged as low as $0.02 to $0.025 on Curve within minutes, leaving holders with heavy losses. The attacker quickly swapped the inflated supply into other stablecoins and accumulated more than 11,000 ETH, worth roughly $23 to $24 million.

Analysts traced the issue to weak access controls, including a privileged minting role tied to a single wallet with no limits, no oracle checks, and no safeguards. In response, Resolv Labs paused the protocol, stating that its collateral pool remains intact since the exploit inflated supply rather than draining reserves.

Still, the damage spread across DeFi. Lending platforms that accepted USR as collateral were hit, as traders exploited mispriced assets.

Senate Push Targets Sports Betting on Prediction Markets

A new bipartisan effort in Washington could reshape one of crypto’s fastest growing niches. According to a Wall Street Journal report, U.S. senators Adam Schiff and John Curtis are preparing legislation that would ban sports and casino-style betting on federally regulated prediction markets.

The proposal would directly impact platforms overseen by the CFTC, including Kalshi and Polymarket’s U.S. operations, preventing them from offering contracts tied to sports events or games like poker and blackjack. Lawmakers argue these products blur the line between financial markets and gambling, while sidestepping state level protections and oversight.

The move comes as legal pressure is already mounting. Several states, including Nevada and Arizona, have taken action against prediction market platforms, while others are pursuing lawsuits. At the same time, regulators and courts are still debating whether these contracts fall under federal derivatives law or state gambling rules.

Despite the scrutiny, the sector continues to grow rapidly, with rising volumes and reported valuations near $20 billion. This bill signals that regulation may be about to catch up.

Miners Are Losing $19,000 Per Coin, and Their Forced Selling Is Everyone's Problem

The average bitcoin miner is currently underwater by about $19,000 on every coin produced. Production costs sit near $88,000 per bitcoin according to Checkonchain's difficulty model, against a market price around $69,300. That gap isn't closing anytime soon.

The Iran war is doing real damage here. Oil above $100 and the near-shutdown of the Strait of Hormuz have pushed electricity costs higher for a meaningful slice of global hashrate exposed to Middle Eastern energy markets. Network difficulty fell 7.76% on Saturday, the second-largest drop of 2026, with block times stretching past 12 minutes and hashrate retreating to around 920 EH/s.

When miners can't cover costs, they sell bitcoin to keep operating. That forced supply lands in a market where 43% of total supply is already underwater and leverage is elevated. Miner stress isn't a mining story. It's a market structure story.

Today: Bits + Bips

Rates are no longer expected to fall. Some markets are now pricing hikes as oil surges and the Iran conflict escalates.

At 4:30pm ET, Bits + Bips with Austin Campbell, Ram Ahluwalia, and Chris Perkins breaks down the Fed shift, global market reaction, Iran developments, and the role of prediction markets.

Join us on X, YouTube or PumpFun.

  • 🧮 Coinbase introduced perpetual stock futures for non-U.S. users, allowing leveraged bets on major companies like Apple and Tesla and index funds using USDC, offering 24/7 trading without expiry as part of its push to become an “everything exchange” blending crypto and traditional assets.

  • ⚖️ Gemini, the crypto exchange founded by the Winklevoss twins, was sued by investors who claim it misled them before its IPO, alleging the firm pivoted away from its core trading business toward prediction markets, exited key regions, cut staff, and saw its stock plunge over 80%.

  • 🇮🇳⚖️ CoinDCX, India’s largest crypto exchange by valuation, became embroiled in a police fraud case after its co-founders were arrested over an alleged $85,000 fake investment scheme, while the company argued the scam came from impersonators using copycat websites rather than its real platform, highlighting how brand fraud is becoming a major risk in India’s online finance market.

  • 🏛️ Fidelity urged the SEC to tighten and clarify the rulebook for broker-dealers handling crypto, pressing for clearer standards on custody, trading, and tokenized securities so traditional financial firms can plug digital assets into existing market infrastructure without running into legal gray areas.

  • 📈 NYSE Arca and NYSE American removed the last major trading caps on options tied to spot Bitcoin and Ether ETFs, bringing crypto fund derivatives in line with other commodity-based ETFs across U.S. exchanges and giving large traders far more room to hedge or speculate through customizable contracts.

  • 💰📊 Kalshi, a U.S.-regulated prediction market platform, raised over $1 billion at a $22 billion valuation in a Coatue-led round, doubling its value in months as institutional demand grows for trading real-world event outcomes despite increasing regulatory scrutiny.