TxStreet is a live transaction and mempool visualizer featuring Bitcoin, Ethereum, Bitcoin Cash, Monero and Litecoin. When a new transaction is broadcasted to a cryptocurrency network, a person appears and attempts to board a bus in real time. If the transaction has a high enough fee, they will board the first bus and be ready to be included in the next mined block. If there are too many transactions to be included in the next block, and the transaction didn't pay a high enough fee, the person will either wait in line or board a different bus. The movement speed of a person represents how high of a fee they paid compared to the current median fee. The size of a person represents the size of the transaction in bytes or gas.