How Dose a Blockchain Work?

Blockchains consist of blocks chained together, every time a transaction is made within a certain crypto, it creates a block (every block is its own line of code representing a certain transaction). The chain portion is called a hash. All hashes are unique from every other one, they never repeat twice. Every block is made up with the same prompt, but has different information. every block has it's own sender (person initiating a transaction), Amount to a receiver, the exact time transaction took place, a hash, and the hash of the block before it. With the hashes it creates a chain effect. If a person was to go into a block and chance it so they would be receiving money, the hash on that block would change, then it wouldnt line up with the block after it and would create the entire chain to be off balance