Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction number 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://artybookmarks.com/story20413779/top-guidelines-of-eth-blockchain-explorer-https-doc-adminforge-de-xbqatr5jtxomaazj2qoagg