Block top - The block number and length in the blockchain (in blocks) on development 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://pr7bookmark.com/story20505970/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-hedge-fachschaft-informatik-uni-kl-de-nnpg48bpspmldanhox94bq