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://bookmarklinx.com/story20340539/explorer-blockchain-base-an-overview-https-canvas-instructure-com-eportfolios-4028322-entries-14252553