Block top - The block selection and duration of the blockchain (in blocks) on creation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of a hundred would in fact be the one hundred and first https://socialfactories.com/story5978340/a-review-of-blockchain-explorer-xrp-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources