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 in fact be the one hundred and first https://bookmarkspecial.com/story20389420/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-fletcher-odonnell-thoughtlanes-net-exploring-further-the-world-of-blockchain