Block top - The block selection and duration of the blockchain (in blocks) on creation of the present block Nonce - The transaction range with the 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://cruxbookmarks.com/story20427198/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-md-swk-web-com-onnbpblstmy8giqdrhnkga