What are you building?

Each role sets your scope before you see any code.

• Product wallet

  The app or registry that carries a product's credential.

  You implement: an exchange client — POST, handle VPRs, return VPs.

  ~3 things, a few days

• Issuer (brand)

  The brand or manufacturer issuing authenticity.

  You implement: start an exchange, deliver a signed VC.

  small, separate piece

• Verifier (buyer/retailer)

  Whoever checks the product is genuine.

  You implement: request a presentation, verify the proof.

  small, separate piece

You do NOT need to implement the other two.