This process of verifying new transactions on the blockchain using a mathematical proof of work algorithm is thus called mining. (cryptotimes.news)
When an interest rate change for new transactions is applied to your account, any existing balances of that type will be identified as protected balances on your statement. (bankofamerica.com)
Each node has a copy of the ledger of transactions and they continually check the validity of new transactions that are being added. (chainbits.com)