Grayscale said proposed Ethereum and Solana protocol changes could reduce annual token issuance and increase scarcity if adopted, projecting 2031 annual supply inflation of about 0.4% for ETH and 1.1% for SOL under fixed assumptions. A chart published by Grayscale on August 13, citing Coin Metrics and Grayscale Investments data as of August 4, 2026, assumes Ethereum EIP-8361 and Solana SIMDs 550 and 553 take effect immediately, network activity remains at recent levels, and Ethereum's stake ratio is one-third. The projections are illustrative because the proposals have not been implemented. Separately, Grayscale said in July 17 filings with the SEC, the U.S. securities regulator, that its Ethereum and Solana staking ETFs would convert staking rewards into cash and distribute proceeds to shareholders at least quarterly, with changes expected around Aug. 7. If the protocol changes are adopted, they could reduce the staking income feeding those funds at the network level.