Wash trading of NFTs on the Ethereum blockchain was estimated to be about $30 billion in 2022, accounting for 58% of NFT trading volume that year. Wash trading involves selling and immediately rebuying assets solely to inflate trading volumes and prices in a pump and dump scheme. The article outlines some methods used to identify wash trades on the blockchain, such as repeated trades between the same wallets or wallets that appear to be controlled by the same entity. While wash trading made up a large share of NFT trading, it only accounted for about 1.5% of overall trading on the Ethereum network. The article warns investors to be aware of wash trading and provides some marketplaces that have been identified