As the founding miners are responsible for running the testnet to serve the Ale wallet and other CCN applications, all miners need to stake CCN tokens (“collateral”) to mine to ensure the stability of the miner's metapower supply. Since the founding miners do not have CCN to stake, miners can stake USDT instead. The initial collateral for founding miners is much less than that for miners in the future. In the future, the estimated collateral can be calculated in proportion to the provided metapower. The initial collateral in terms of the equivalent value of CCN tokens will be returned in full at the end of its lifespan of 6 months, according to the price of CCN tokens in the secondary market on that day.