Odaily Planet Daily News CryptoSlam data shows that blockchain-based digital collectibles slowed down in May. In the past 30 days, global sales of NFTs were US$624 million, and overall NFT sales fell 54% compared with April. Among the top 10 NFT series, Solana-based Mad Lads and Ethereum-based series CryptoPunks and Bored Ape Yacht Club (BAYC) fell the most. Among them, BAYC had the largest sales decline of 54%, Mad Lads sales fell 44%, and CryptoPunks sales fell 41%. (Cointelegraph)