Map the four responsibilities
Use four roles to read a workflow: the source reports an observation, the oracle makes it available to the application, the application applies its rules, and the wallet presents an authorization request. Ethereum's oracle documentation describes the role of bringing external information to smart contracts.
For a hypothetical exchange, write down who supplies the reference price and who constructs the proposed transaction. Then ask whether the contract consumes that same price or whether the interface displays it only as context. A single brand name across the interface should not obscure these separate responsibilities.
Inspect the boundary that affects your task
If you are reading a chart, source identity and observation timing may be your immediate concern. If you are authorizing an operation, you also need the concrete asset changes and permission scope. Choose the check that answers the decision in front of you.
For example, a current observation cannot explain an unexpected recipient. A familiar recipient cannot explain a stale valuation. Keep those questions separate in your notes. The oracle wallet foundations article follows an illustrative transaction across the data, application, and signing boundaries.
Ask what happens when information is missing
A useful application explains how it behaves when a source is unavailable, observations disagree, or a proposal expires. Look for a specific state and a next step. “Unavailable” should not quietly become a zero value, a favorable assumption, or an unchanged green indicator.
Record the feed identifier, observation time, proposed action, and relevant limits. This makes it possible to revisit the decision if the page closes. Continue with smart contract validation to examine how input rules should connect to the operation the user sees.
