Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction range for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://socialwebnotes.com/story5337269/everything-about-blockchain-explorer-https-www-folkd-com-submit-cryptoexplorerhub-com