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 actually be the 101st transaction submitted by this account) https://social4geek.com/story6483747/facts-about-blockchain-explorer-confirmed-transactions-revealed-https-doodleordie-com-profile-brokerdrop7