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I haven't come across main stream photo service and I think photogrid might just be first. Brilliant as they introduce blockchain concept into their newest update

Photogrid users could only earn PG Points, which isn’t internet money. Having the chance to earn COS makes posting on Photogrid much interesting.

I use PG for sometime now. I have the app on my phone for some edit purpose but never knew they have token based structure also. It was smart of them to bring in COS

The COS earning event was just for a short period and those who benefitted were in brazil. Photogrid does not have a token based structure to the best of my knowledge.

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