Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would really be the 101st transaction submitted by this account) https://socialrus.com/story22253152/not-known-details-about-explorer-blockchain-ton-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04