Block top - The block selection and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to 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://easiestbookmarks.com/story20496713/5-essential-elements-for-blockchain-explorer-ethereum-https-fletcher-odonnell-thoughtlanes-net-exploring-further-the-world-of-blockchain