COPYRIGHT CERTIFICATE OF ANTERIORITY
To whom it may concern
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- Owner: YAN GAO
- Certificate Status:
- Copyright Number: DEP637849042917198850
- Deposit Date: 4/7/2022 3:08:09 AM
- MD5: cGMooSD6uyKKzl5IRLvtiw==
pen design
This certificate provides signature and time-stamping associated with a official public notary + provides a proof that is indisputable.