Ideas in this flowchart

• Mining secures the blockchain through proof of work and verification
• Mining requires substantial computing power and electricity
• Miners solve a difficult trial-and-error puzzle
• A solved puzzle allows a block to be added
• Other miners validate the proposed block
• They verify the proof of work
• They check the transactions against the existing blockchain
• These checks prevent counterfeit payments and unauthorized spending
• Each block contains the previous block's hash
• Changing historical data alters the entire subsequent chain
• The altered chain reveals the tampering