THE BLOCK: Tether has invested an undisclosed amount in Latin American stablecoin infrastructure startup EFY Finance as part of its seed round. EFY provides on- and off-ramp infrastructure for ethereum:0xdac17f958d2ee523a2206206994597c13d831ec7 and ethereum:0x07041776f5007aca2a54844f50503a18a72a8b68, alongside cross-border payments, accounts and custody services. It supports settlement to local bank accounts in 17 countries and says it has more than 25,000 active individual and business accounts.