Server-side verification of Google Play In-app billing version 3 purchase

Question

I\'m unable to find a straight answer as to how I verify an in-app billing purchase on the server before making downloadable content available to the user.

I use in

Answer 1

This is very old question but I think it is still relevant.

My small contribution. Purchase object is extended for one new parameter "acknowledged" and now it looks:

{
  "orderId":"12999763169054705758.1364365967744519",
  "packageName":"my package name",
  "productId":"77",
  "purchaseTime":1366217534000,
  "purchaseState":0,
  "purchaseToken":"utfwimslnrrwvglktizikdcd.AO-J1OwZ4l5oXz_3d2SAWAAUgFE3QErKoyIX8WuSEnBW26ntsyDmlLgoUd5lshqIY2p2LnlV4tpH4NITB4mJMX98sCtZizH7wGf6Izw3tfW_GflJDKFyb-g",
  "acknowledged":true
}

So be careful when check signature to add this one extra parameter.