Polygon, Solana, and Base have been awarded S-grade ratings in the 2025 crypto payment chain rankings, according to recent on-chain analysis. The ratings highlight the growing importance of the payment sector within the cryptocurrency industry, as noted by Polygon Foundation CEO Sandeep, who emphasized the role of stablecoin cards and B2B/P2P scaling in this development. Ethereum and Tempo also received S-grade ratings. Tron, Ripple, and Avalanche were rated A-grade, while Sei, Sui, and Optimism were placed in the B-grade category. Algorand was noted to be in the evolving C/D-grade range. The fear and greed index remains high, reflecting ongoing market sentiment.