Mercado Bitcoin Freezes $12.9M in Crypto and Halts Platform Amid Probe

Brazil's Mercado Bitcoin has frozen $12.9 million in affected crypto assets and shut down its platform while an investigation unfolds, according to a Cointelegraph alert posted on X. The exchange hasn't said publicly what triggered the move or how long the pause will last.

The halt covers the platform itself, meaning trading and other services are off the table for users until the probe wraps. The $12.9 million figure refers specifically to crypto assets tied to whatever is being investigated — not the exchange's entire holdings.

Mercado Bitcoin is one of the largest crypto exchanges in Brazil and a long-running name in Latin America's digital asset market, which makes a full platform pause a notable event for the region's traders.

Details remain thin. There's no word yet on what the affected assets are, who holds them, or whether customer funds outside that group are untouched — questions that will shape how users react once the platform comes back online.

For now, the story is the freeze itself: a nine-figure-in-reais-sized chunk of crypto locked up and a major exchange sitting dark during an active investigation. Paparazzi will update as more comes out.