# Action receipts and application logs: how they work together

> Learn what to capture in a signed action receipt, how it differs from a log, and why both sources matter when investigating a workflow.

By Truthlocks
Published: 2026-05-28
Updated: 2026-10-03T05:03:15.302732Z
Canonical page: https://www.truthlocks.com/blog/why-ai-operations-need-receipts

An application log helps operators understand system behavior. A signed action receipt gives a particular reported event a structured record tied to an identity. They serve related purposes and are most useful when their references can be connected.

## Choose an event people need to inspect

A receipt might record that a service reviewed a document, an agent prepared a recommendation, or an authorized workflow approved a change. Define the event precisely. “Recommendation created” and “payment executed” describe different things and should not share an ambiguous completion label.

Include a business or task reference so someone can connect the receipt to the original process. A receipt that cannot be associated with the relevant ticket, document, or request is difficult to interpret.

## Capture the right context

- The identity reporting the action.
- The supported action type and outcome.
- Relevant input and output references or fingerprints.
- The task, request, or business record involved.
- Approval or follow-up references when appropriate.

Choose fields deliberately. Copying complete prompts, secrets, or customer documents into every receipt can create unnecessary exposure. Keep protected originals in their approved systems and record suitable references.

## Understand what the signature establishes

A valid signature helps establish the source and integrity of the reported event. It does not independently observe the physical world or guarantee that the reporting system was correct. Compare the receipt with the receiving application’s records when investigating a consequential action.

Receipt coverage depends on instrumentation. If a tool or event is not connected, the absence of a receipt is not proof that no activity occurred.

## Use receipts during a review

For a [network change](https://www.truthlocks.com/industries/telecom#network-changes), connect the approved configuration fingerprint to the event reported by the execution tool. Review differences through the operations process. For a [customer-facing application event](https://www.truthlocks.com/industries/saas#customer-events), give authorized recipients a way to inspect the specific action the service reported.

Explore [action receipts](https://www.truthlocks.com/product/receipts) and [proof bundles](https://www.truthlocks.com/product/proof-bundles). Decide which evidence needs a current online check and which supported material should travel with an exported record.