BFM (B4 Flash Memory) is a new type of cryptocurrency based on Conditioned Proof Of Capacity (CPOC). Its main feature is the use of B4 flash memory chips as participants in the consensus process, reducing wear on mining machine chips caused by temperature, increasing the speed of chip rewriting and reading, providing the highest level of reliable storage, and thus decreasing the consumption of electric resources by cryptocurrencies. This lowers the barrier to entry for participation and makes its production method more decentralized, safer, and more trustworthy, enabling everyone to participate in the mining of cryptocurrencies, generating credit and value through mathematical algorithms and distributed mining.