Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction number for the from address (bear in mind this begins at 0 so a nonce of 100 would truly be the 101st transaction submitted by this account) https://easiestbookmarks.com/story20300273/helping-the-others-realize-the-advantages-of-blockchain-explorer-one-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua