Abstract: Techniques for proof-of-viewing (POV) are described herein. In accordance with various embodiments, server(s) used by parties interested in tracking POV register media content items in a blockchain, receive a request to view a media content item of the media content items from a client, generate an intent object indicating the request to view the media content item by the client, and record the intent object in the blockchain. A server for reporting POV receives, from the client, a request for at least a portion of a media content item, where the intent object is embedded in the request, sends at least the portion of the media content item to the client and reports to the blockchain to cause the blockchain to record the intent object and an intent state in the blockchain based on sending at least the portion of the media content item to the client.

Abstract: An interface for the analysis of liquid sample having carbon content by an accelerator mass spectrometer including a wire, defects on the wire, a system for moving the wire, a droplet maker for producing droplets of the liquid sample and placing the droplets of the liquid sample on the wire in the defects, a system that converts the carbon content of the droplets of the liquid sample to carbon dioxide gas in a helium stream, and a gas-accepting ion source connected to the accelerator mass spectrometer that receives the carbon dioxide gas of the sample in a helium stream and introduces the carbon dioxide gas of the sample into the accelerator mass spectrometer.

Abstract: An interface for the analysis of liquid sample having carbon content by an accelerator mass spectrometer including a wire, defects on the wire, a system for moving the wire, a droplet maker for producing droplets of the liquid sample and placing the droplets of the liquid sample on the wire in the defects, a system that converts the carbon content of the droplets of the liquid sample to carbon dioxide gas in a helium stream, and a gas-accepting ion source connected to the accelerator mass spectrometer that receives the carbon dioxide gas of the sample in a helium stream and introduces the carbon dioxide gas of the sample into the accelerator mass spectrometer.