Block top - The block quantity and size on the blockchain (in blocks) on generation of the current block Nonce - The transaction number for that 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://cheapbookmarking.com/story20480970/blockchain-explorer-search-an-overview-https-kearns-horn-hubstack-net-monitoring-transfers-how-distributed-ledger-analyzers-work