Trade tensions between the United States and China and a weakening yuan are boosting demand for cryptocurrencies among Chinese investors, market players from Asia to New York said.

Exchanges, researchers and brokers say they have seen an uptick in activity at cryptocurrency trading venues popular with Chinese. They said over-the-counter brokers, which act as middlemen for buyers and sellers, have seen much of the activity.

Measuring cryptocurrency trading volume in China or elsewhere is quite difficult.