COPYRIGHT CERTIFICATE OF ANTERIORITY
To whom it may concern
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- Owner: YAN GAO
- Certificate Status:
- Copyright Number: DEP637523225934728368
- Deposit Date: 3/26/2021 1:33:23 AM
- MD5: HX2aW9Rhz1t7l6+mh7BEiQ==
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This certificate provides signature and time-stamping associated with a official public notary + provides a proof that is indisputable.