The filing also provides an illustrative example of the amount of Bitcoin (BTC) Grayscale will contribute to the mini fund: 63,204 bitcoin, or 10% of existing assets in GBTC, as per the filing. Shares of the BTC trust are to be issued and distributed automatically to holders of GBTC shares. (Pro forma financial statements are projections of future expenses and revenues, based on a company’s past experience and future plans.)