Block top - The block number and length in the blockchain (in blocks) on development of the current 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://doctorbookmark.com/story20398470/not-known-facts-about-blockchain-explorer-usdt-https-canvas-instructure-com-eportfolios-4028322-entries-14252553