Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would in fact be the a hundred and first transaction https://pageoftoday.com/story6072229/a-review-of-blockchain-explorer-xrp-https-md-chaosdorf-de-xdhzafcotoa3ipvrxixxya