Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Keep in mind this commences at 0 so a nonce of a hundred would in fact be the 101st transaction submitted by https://digibookmarks.com/story20322347/a-review-of-blockchain-explorer-xrp-https-www-blurb-com-user-optionname7