The Proof Ledger
Research on proof-led advertising.
Field notes from real audits, real sweeps and real numbers. Written by the people running the engine.
Thought Leader Ads: the 2026 economics
What the $0.51 vs $2.42 CPC benchmarks actually say, where they come from, and the vendor-bias caveats nobody quotes.
ReadWe audited 20 B2B ad accounts. Here is what we found
Every product company had unused praise. The oldest unchanged ad had run for 10 months. The aggregate data from our audit work.
ReadWhy your customers already wrote your best ads
The category manifesto: the most credible ad copy in your market is sitting unpromoted in other people's posts.
ReadThe proof grading system: gold, expert, mention, review
Our grading taxonomy, with real anonymized examples and the entity-ambiguity gate that keeps wrong-company praise out of your ads.
ReadCreative fatigue is a supply problem, not a copywriting problem
Your creative does not wear out because the copy got worse. It wears out because one voice cannot supply a feed built on many.
ReadThe compounding case: why proof beats creative refresh
Creative decays in two to three weeks. A rights-cleared proof library appreciates. The economics of the asset, not the campaign.
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