Confusion between WEI and ETH led crypto user DinoDealer, to sell his precious rock NFT for 444 Wei or $0.0012 instead of 444 ETH, or $1.2 million, to a bot.

In a tweet, DinoDealer lamented that “in one click” his entire net worth of $1 million was gone.

Once the bot snaps up the NFT, the change would be irreversible. Blockchains are constructed to be immutable, leaving no room for simple mistakes, such as confusing ETH and WEI.

DinoDealer has since publicly shared the address of the rock’s bot snipe, making light of the situation by uploading a new Twitter profile picture and adding a crying emoji. Their avatar stands next to the rock NFT, crossed out in red.

DinoDealer is only among the many users that committed a costly error in the crypto world.

Recently, a Bitcoin (BTC) user lost $10,000 (0.25 BTC) by not double-checking the receiver's wallet address.