Block top - The block number and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Keep in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://tinybookmarks.com/story20570960/what-does-blockchain-explorer-usdt-mean-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers