Block top - The block number and duration of the blockchain (in blocks) on generation of the current block Nonce - The transaction variety with the from address (Remember this starts at 0 so a nonce of 100 would in fact be the one hundred and first transaction submitted by https://social-medialink.com/story5634104/a-review-of-blockchain-explorer-xrp-http-bioimagingcore-be-q2a-user-storegarlic8