Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for your from address (bear in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://tbookmark.com/story20141503/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-www-webwiki-co-uk-cryptoexplorerhub-com