A 10,000-strong collection of Ethereum-based NFTs, CryptoPunks, has surpassed $1 billion in sales, according to NFT aggregation site CryptoSlam. This makes CryptoPunks reportedly the second NFT project to hit billion-dollar mark after NFT game Axie Infinity surpassed that level on August 8. The biggest CryptoPunk sale seen on August 28 was of CryptoPunk #8888 which sold for about $2.8 million.