Block top - The block amount and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction number 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://sociallytraffic.com/story5412360/top-blockchain-explorer-confirmed-transactions-secrets-http-bioimagingcore-be-q2a-user-storegarlic8