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 basically be the 101st transaction submitted by this account) https://bookmarkspring.com/story15503579/everything-about-blockchain-explorer-https-pad-geolab-space-1eemv59krmalavl2pdd7cg