Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://socialdummies.com/story5305019/what-does-blockchain-explorer-usdt-mean-https-kearns-horn-hubstack-net-monitoring-transfers-how-distributed-ledger-analyzers-work