Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range 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://sparxsocial.com/story11227780/explorer-blockchain-things-to-know-before-you-buy-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation