Embodiments of the present disclosure are directed to a system, methods, and computer-readable media for automatically initiating post-delivery action based on pre-tender diagnostic test results and post-delivery diagnostic test results stored in a distributed electronic ledger for a particular item. In embodiments, the post-delivery action can include, among other things, automatically initiating a return action such as generating shipment information for a return of the item, initiating an insurance action for the item, and/or communicating an electronic notification to the item seller and/or item purchaser. The post-delivery action can be stored in the distributed electronic ledger, and the post-delivery action can electronically trigger a cascade of returns, billing, communications, and/or insurance actions, among other things.