Etherscan

An analytics platform for observing transactions and wallet addresses on the Ethereum blockchain.

Users can check Etherscan to view the status of a blockchain transaction, the current price of gas fees, or to review the transaction history of a wallet address and verify details about a counterparty or NFT collection.

When verifying if an NFT collection is the official one or if the buyer or seller is someone you can trust, it is best to review Etherscan to look for potential red flags, such as a lack of prior transaction history from the NFT creators wallet, or signs of wash trading (this is where a creator buys and sells an NFT to themselves through different wallet addresses they own in order to manufacture a high trading volume).