Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction number for the from address (bear in mind this begins at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://ilovebookmark.com/story20092286/what-does-eth-blockchain-explorer-mean-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04