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 in fact be the one hundred and first https://tinybookmarks.com/story20275469/explorer-blockchain-base-an-overview-https-www-pdc-edu-url-https-cryptoexplorerhub-com