Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for the from address (bear in mind this begins at 0 so a nonce of one hundred would actually be the a hundred and first transaction https://easiestbookmarks.com/story20323800/the-definitive-guide-to-explorer-blockchain-ethereum-https-www-instapaper-com-p-16864836