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 (Remember this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Agreement creation https://bookmarkfriend.com/story20544184/a-review-of-blockchain-explorer-usdt-https-pad-geolab-space-1eemv59krmalavl2pdd7cg