Grayscale Investments launches Solana, Avalanche, Polygon and Cardano Smart Contract Fund and it shows where the DeFi hype is! Grayscale, a cryptocurrency asset management company, is adding non-Ethereum smart contract tokens to its line of investment funds. The Grayscale Smart Contract Platform ex Ethereum fund, or GSCPxE, lets investors participate in some of the most popular smart contract networks and Ethereum sidechains. Cardano, Solana, Avalanche, Polkadot, Polygon, Algorand, and Stellar are among the altcoins included in the fund.