Block top - The block selection and duration in the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that 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://nowbookmarks.com/story20710860/5-tips-about-blockchain-explorer-you-can-use-today-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04