Block top - The block selection and length from the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this begins at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://expressbookmark.com/story20522097/blockchain-explorer-fundamentals-explained-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers