TruthLens

TruthLens takes a public YouTube channel and produces a credibility report with eight weighted factors, each with the evidence that produced it. It extracts claims, flags per-video outliers, and tracks how a creator's framing drifts over time.

The interesting part is that every factor is derived from something you can point at in the source, and the whole history is sealed so a report cannot be quietly edited afterwards.

What made it interesting

• Eight factors with itemised evidence rather than one opaque number
• Sealed per-entity hash chain, replayable from a public endpoint
• Live data with honestly labelled offline fallback