Bitcoin is Digital Money

Your friend keeps their bitcoin on an exchange. Who can freeze it?

• Nobody, because bitcoin can't be frozen
• The exchange, because it holds the keys
• Only the miners who confirmed the deposit

A miner leaves your payment out of the block it just found. What normally happens next?

• The payment is cancelled and your wallet refunds you
• The payment keeps waiting, and the next miner to find a block can include it
• The payment is stuck until that same miner changes its mind