Block top - The block amount and size on the blockchain (in blocks) on development of the present block Nonce - The transaction selection for 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://esocialmall.com/story5932970/not-known-details-about-blockchain-explorer-usdt-trc20-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04