Ripple CEO Brad Garlinghouse talked about the concentration of Bitcoin's miners in a recent CNN interview. He said that China controls the Bitcoin blockchain. "China has four major miners, accounting for 60% or more of Bitcoin's total mining capacity, and 80% of Bitcoin and Ethereum's mining capacity are in China." In response, Mati Greenspan, a former eToro analyst and founder of QuantumEconomics, said: "Brad, you know that's not true!" He pointed out that four known mining pools are located in China, but he added that mining pools are not equivalent to Miners, because the pool is made up of individuals. "