On March 16, 2026, Grayscale Investments Sponsors, LLC, the sponsor of the Grayscale Bitcoin Trust ETF (the "Trust"), disclosed a significant update regarding the valuation of Bitcoin held by the Trust for operational purposes. Starting April 1, 2026, the Trust will transition from using the CoinDesk Bitcoin Price Index (XBX) to the CoinDesk Bitcoin Benchmark Rate for calculating its net asset value (NAV) and NAV per share. This change aims to enhance the accuracy and reliability of the Trust's Bitcoin valuation by utilizing a more robust index that mitigates the effects of fraud and manipulation in the cryptocurrency market.

The CoinDesk Bitcoin Benchmark Rate is designed to provide a real-time, volume-weighted fair value of Bitcoin, taking into account various trading platforms and adjusting for non-market related events. The Trust believes that this new methodology will better reflect the true market value of Bitcoin, thereby benefiting its shareholders. The announcement comes at a time when the cryptocurrency market is under increasing scrutiny for transparency and reliability, making this adjustment a proactive step towards improved governance and operational execution.

As of the announcement date, the Digital Asset Trading Platforms included in the CoinDesk Bitcoin Benchmark Rate are Binance, Bitstamp by Robinhood, Bullish, Bybit, Crypto.com, Gate, Gemini, HashKey, Kraken, LMAX Digital, and OKX. Grayscale and the Trust are confident that these platforms comply with applicable licensing requirements and maintain robust anti-money laundering (AML) and know-your-customer (KYC) practices.

This strategic shift in valuation methodology is expected to have a small positive effect on the Trust's stock price, as it aligns with the growing demand for transparency and reliability in the cryptocurrency space. Investors and stakeholders are encouraged to monitor the Trust's filings with the Securities and Exchange Commission (SEC) for further updates and details regarding this transition.



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