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 101st transaction submitted by this account) https://followbookmarks.com/story20342710/explorer-blockchain-things-to-know-before-you-buy-https-peatix-com-user-27717689