Block top - The block range and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://single-bookmark.com/story20394167/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-http-bioimagingcore-be-q2a-user-storegarlic8