Independent research · Source-linked guidance
Transparent provenance

Evidence and source ledger

Every source used to separate merchant claims, official facts, independent guidance, competitor data, and audience signals.

Merchant documentation

  1. Castos pricing page — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  2. Castos private podcasting page — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  3. Castos internal business podcasts page — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  4. Castos mobile app page — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  5. Castos enterprise podcast platform page — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  6. Castos guide: how to create a private podcast (updated July 22, 2026) — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  7. Castos comparison of seven podcast hosts — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18
  8. Castos home page — Merchant documentation · castos.com · Merchant-controlled · checked 2026-10-18

Regulatory guidance

  1. 16 CFR Part 255: Guides Concerning the Use of Endorsements and Testimonials in Advertising (eCFR) — Regulatory guidance · ecfr.gov · Publisher independence not verified · checked 2026-10-18

Alternative provider

  1. Podbean podcast hosting pricing page — Alternative provider · podbean.com · Publisher independence not verified · checked 2026-10-18
  2. Podbean enterprise podcast pricing page — Alternative provider · podbean.com · Publisher independence not verified · checked 2026-10-18
  3. Podbean private podcast solution page — Alternative provider · podbean.com · Publisher independence not verified · checked 2026-10-18
  4. Transistor pricing page — Alternative provider · transistor.fm · Publisher independence not verified · checked 2026-10-18
  5. Transistor Help: what are private podcast subscribers — Alternative provider · support.transistor.fm · Publisher independence not verified · checked 2026-10-18
  6. Transistor Help: which podcast apps support private podcasts — Alternative provider · support.transistor.fm · Publisher independence not verified · checked 2026-10-18
  7. Transistor Help: a private internal podcast for a team — Alternative provider · support.transistor.fm · Publisher independence not verified · checked 2026-10-18
  8. Hello Audio pricing page — Alternative provider · helloaudio.fm · Publisher independence not verified · checked 2026-10-18
  9. Supporting Cast home page — Alternative provider · supportingcast.fm · Publisher independence not verified · checked 2026-10-18
  10. Transistor private podcasts feature page — Alternative provider · transistor.fm · Publisher independence not verified · checked 2026-10-18

Research study

  1. The Infinite Dial 2026 (Edison Research at SSRS) — Research study · ssrs.com · Publisher independence not verified · checked 2026-10-18

Platform documentation

  1. Spotify for Creators Help: paid podcasts and your private RSS feed — Platform documentation · support.spotify.com · Merchant-controlled · checked 2026-10-18