bitcoin transactions are increasingly subject to additional fees. Some members (specifically those in favor of Bitcoin Cash ) believe that the solution is a larger block size thats capable of holding more transactions per block. This is because bitcoin requires miners to verify transactions.
A im ausland ungelernt geld verdienen payee can verify the signatures to verify the chain of ownership. Transactions are public and can be found on the digital ledger known as the blockchain. Bitcoins Exist as Records of, bitcoin, transactions. Each owner transfers bitcoin to the next by digitally signing a hash of the previous transaction and the public key of the next owner and adding these to the end of the coin. So if you want to change something in the previous block, you also have to change something ( the hash) in the current block, because the one that is currently included is no longer correct.