From the whole timeline, it would look to me as someone created a later test result that they backdated for him to be able to apply for a Visa. This would explain why Djokovic was out in public at the time he was apparently positive (I doubt he would have public appearances after a day after a positive test) and it would explain the test result ID discrepancy.
It could also explain why the positive test result was generated on 26th and the negative one on 22nd.
Thank you. I'd say that is very convincing, especially with him walking about on 16, 17th and 18th.
When scanning a QR code, is the date visible anywhere on the page? I am trying to guess whether someone just edited a PDF with a different date (might explain why they chose 16.12 - you need to change a single number). Alternative would require someone back dating a test in the system.
No, that is the weak point of this system. Anyone can change date in pdf and no one can check that except Serbian authorities. The only limit for date is one year after test because verification system (qr code link) is set not to validate older tests.
From the whole timeline, it would look to me as someone created a later test result that they backdated for him to be able to apply for a Visa. This would explain why Djokovic was out in public at the time he was apparently positive (I doubt he would have public appearances after a day after a positive test) and it would explain the test result ID discrepancy.
It could also explain why the positive test result was generated on 26th and the negative one on 22nd.