Bitcoin uses computing power to produce blocks, while Ethereum no longer uses mining. What’s the difference?
Proof of Work maintains the ledger through real computational effort: to tamper with historical records, you’d need to control most of the network’s computing power, which is extremely costly.
The most expensive thing in crypto has never been transaction fees, but the cost of not understanding the rules.
Don’t invest borrowed money; the stress can push you into making bad decisions.