Provenance
The record of which source asserted a value and when, carried alongside the value itself rather than in a separate document.
Provenance is the metadata that says where a piece of information came from: which document, feed or observation asserted it, when that source last did so, and what transformations were applied on the way in. Carried properly it is attached to the individual property rather than to the dataset, because a single resolved record is usually assembled from several sources of very different weight.
It is what makes an answer usable in a decision that will be reviewed. A coordinate from a regulatory filing, a throughput figure from a licensed dataset and a construction stage from a satellite pass are three different grades of evidence, and a reviewer who cannot tell them apart has to treat all three as equally uncertain - which in practice means treating all of them as unusable.
It also makes correction possible. When entity resolution merges two records wrongly, the underlying assertions are still there to be split; when a source is later found to be wrong, everything derived from it can be identified. A system that flattens its inputs into a single confident value can do neither, and its errors are permanent.
Evidence that keeps pace with the decision.
Evaluate Nuclir against the systems, markets, and decisions that matter to your organization. The result is current intelligence with the context needed to use it responsibly.