Bitcoin miner Riot Platforms (RIOT) has modified its Bitcoin-backed loan agreement with Coinbase, The Energy Mag reported. The existing variable interest rate, linked to the federal funds rate, was converted to a fixed rate to mitigate interest rate fluctuation risk. The specific interest rate level was not disclosed. Additionally, a 'two consecutive days below standard' rule was introduced as a criterion for applying additional collateral requirements in the event of a Bitcoin price drop. In the first quarter, Riot Platforms sold 3,778 BTC, raising approximately $289.5 million.