Block top - The block selection and duration with the blockchain (in blocks) on development of the current block Nonce - The transaction selection for your from address (Keep in mind this starts off at 0 so a nonce of 100 would essentially be the 101st transaction submitted by this https://bookmarkingalpha.com/story20696035/5-essential-elements-for-blockchain-explorer-ethereum-https-atavi-com-share-xftxdaz1pgsb4