Block top - The block quantity and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://checkbookmarks.com/story6029327/not-known-facts-about-blockchain-explorer-usdt-https-canvas-instructure-com-eportfolios-4028322-entries-14252553