Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://alphabookmarking.com/story20535507/blockchain-explorer-search-an-overview-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation