ProofStack — evidence-backed business cases for indie builders
A library of 40+ audited small-software business cases (live count at /cases). Every revenue and pricing claim links to a public source with a date and an evidence grade: A for live dashboards, B for dated founder statements, C for official pages without figures. Revenue that is not publicly disclosed is recorded as “unknown” — never estimated.
- Case library — pricing, acquisition operations, what to copy and what not to, with source links on every figure.
- Pricing benchmarks — median first paid tier and paywall distribution, computed from pricing pages we verified by hand.
- Disclosed-revenue index — only products with dated public disclosures; undisclosed is excluded rather than estimated.
- Research teardowns — reproducible analyses where every number can be re-checked by the reader.
- Pain-point validation — describe your product problem, get matched against audited cases free.
- Free AI-visibility check — can GPTBot and ClaudeBot actually read your site?
- $99 evidence audit — human-verified, delivered in 48 hours, payment after delivery.
Machine-readable: llms.txt, llms-full.txt, RSS, MCP endpoint at /mcp, open dataset (CC BY 4.0) at github.com/lttxzmj/proofstack-dataset.