A token-verifiable proxy uploader is disclosed. A token request may be transmitted from an end-user communication device for requesting an upload token from a hosted services server that is configured to authorize transmission of a first media file to a hosted proxy server. The upload token may be transmitted to the end-user communication device. Validation of the user of the end-user communication device may be conducted without the end-user device providing any credentials to the media sharing site and in which the end-user device is does not transmit any credentials specific to the media sharing site as part of the validation. The token validation call may be in response to the hosted proxy server receiving the upload token and either: (1) the first media file from the end-user communication device; or (2) a request from the end-user communication device to upload the first media file to the hosted proxy server.