Tether Freezes $344M USDT; Euro Stablecoins Surge

Tether froze $344 million in USDT on April 23, 2026 after receiving information from U.S. law enforcement and the Office of Foreign Assets Control that tied two blockchain addresses to unlawful conduct. The company said the freeze covered funds held in two addresses and described it as one of its largest USDT freezes to date. Tether Chief Technology Officer Paolo Ardoino defended the action, saying, “USDT is not a safe haven for illicit activity. When credible links to sanctioned entities or criminal networks are identified, we act immediately and decisively.”

Euro-denominated stablecoin trading and transaction volume rose roughly 1,200% over a 15-month period following implementation of the European Union’s Markets in Crypto-Assets regulation, known as MiCA. Market participants attribute the growth to MiCA’s clearer rules for issuers and its passporting provisions, which allow tokens issued in one member state to operate across the bloc and make euro stablecoins more usable for cross-border payments and euro-denominated settlement. The surge occurred even as global crypto adoption cooled in the first quarter of 2026.

On-chain metrics from Grayscale Investments indicate bitcoin may be forming a market base after recent price action returned some recent buyers to breakeven. Grayscale’s head of research wrote that “if bitcoin’s price rises further in the coming days, more recent buyers would move into positive PnL, which can be an indicator for marking the first phase of a bull market.” The firm said the metrics align with several on-chain health indicators, while noting that sustained price momentum would be needed to confirm a trend change.

A wallet linked to a prior Balancer V2 exploit resurfaced after five months and moved roughly 1,100 ETH through Thorchain, a cross-chain liquidity network. The earlier attack had drained nearly $120 million from Balancer pools. Security researchers tracked the transfers as funds were routed across multiple chains, highlighting the difficulty of tracing and recovering assets once they cross into other networks.

In Washington, more than 100 crypto industry groups and firms asked the U.S. Senate to advance the CLARITY Act, a proposed bill that would clarify how U.S. securities laws apply to crypto-market infrastructure and exchanges. Signatories included exchanges, venture capital firms and infrastructure providers such as Coinbase, Circle, Kraken, Andreessen Horowitz, Chainalysis, Uniswap Labs and Ripple. The letter called for clearer rules to help firms build compliant services and give investors access to regulated markets.

The events occurred in the same period: the Tether freeze, the rapid growth in euro stablecoin activity under MiCA, on-chain indicators cited by Grayscale, the movement of exploited funds through Thorchain, and the industry petition on the CLARITY Act.