Block top - The block number and length in the blockchain (in blocks) on creation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the a hundred and first transaction submitted https://apollobookmarks.com/story20749598/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-kearns-horn-hubstack-net-monitoring-transfers-how-distributed-ledger-analyzers-work