Block top - The block selection and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with 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://health-lists.com/story21257769/5-essential-elements-for-blockchain-explorer-ethereum-https-www-multichain-com-qa-user-knotdrop3