Block top - The block selection and duration of your blockchain (in blocks) on generation of the current block Nonce - The transaction number for your from address (bear in mind this begins at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://bookmarksystem.com/story20516947/details-fiction-and-explorer-blockchain-ethereum-https-files-fm-f-e6nkandt95