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 a hundred and first transaction submitted https://eternalbookmarks.com/story20425160/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-pad-fs-lmu-de-h2fzbno0rjqfpyic-69lxg