Block top - The block selection and duration with the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://social40.com/story6113330/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-www-rosewood-edu-na-profile-engelhczrussell69263-profile