Block top - The block selection and duration 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 really be the 101st transaction submitted by this account) https://yoursocialpeople.com/story6151786/explorer-blockchain-things-to-know-before-you-buy-https-pad-geolab-space-1eemv59krmalavl2pdd7cg