Block top - The block range and size in the blockchain (in blocks) on generation of the current block Nonce - The transaction range for the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://minibookmarking.com/story20722407/helping-the-others-realize-the-advantages-of-blockchain-explorer-bnb-https-articlescad-com-the-remarkable-adventurers-in-the-cyber-frontier-grasping-distributed-ledger-instruments-325096-html