Grayscale Shifts ETC Price Tracking to CoinDesk Benchmark

Grayscale Ethereum Classic Trust (ETCG), a trust that tracks the price of Ethereum Classic (ETC), has made several key changes to its operations. The trust will begin using the CoinDesk Ethereum Classic Benchmark Extended Rate as its reference index and Index Price, effective September 1, 2026.

The change is part of an effort to improve the accuracy of ETC's price tracking. The new index uses a more comprehensive methodology that includes selection criteria for constituent trading platforms, volume-weighted pricing, FX conversion to USD, outlier exclusion, inactivity adjustments, and manipulation-resistance features.

In addition to the change in its reference index, Grayscale also announced a leadership transition at its sponsor's finance function. Kathryn Masci and Daniel Plourde will take on roles as interim Co-Chief Financial Officers of Grayscale Investments Sponsors, LLC, effective July 2, 2026. Masci will also join the sponsor's Board of Managers and become the Principal Financial and Accounting Officer of the trust.