Transaction

7ce1e8009d7746fa435d117befd76a3ef821f5b55123237e6f274df329df7c78
( - )
313,574
2018-05-22 01:21:58
1
422 B

2 Outputs

Total Output:
  • jm u`1Te,½²|]îžHóåT€ÏÍg+°pԉØ)L·That would rely on the client, but the memo protocol is decentralized. Probably best method is like with TXs, only the first to set the username is valid (1st on blockchain/timestamp)
    https://whatsonchain.com/tx/7ce1e8009d7746fa435d117befd76a3ef821f5b55123237e6f274df329df7c78