How does a Bitcoin double-spend work?
Could you elaborate on the mechanics of a Bitcoin double-spend? I understand it's a potential threat to the integrity of the network, but I'm curious about the specific steps an attacker might take. Does it involve broadcasting a transaction to multiple nodes simultaneously? Or is it a more sophisticated scheme, perhaps involving the manipulation of transaction confirmations? How does the network typically detect and mitigate such attempts? And are there any preventive measures that individuals can take to safeguard their Bitcoins from such attacks?