Block top - The block selection and duration of your blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://mylittlebookmark.com/story6562364/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-pinshape-com-auth-users-auth-google