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 begins at 0 so a nonce of 100 would in fact be the a hundred and first transaction https://businessbookmark.com/story5737850/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation