Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://getidealist.com/story22375774/explorer-blockchain-tron-an-overview-https-www-orkhonschool-edu-mn-profile-coxqonpallesen82836-profile