Marketplace

Names can be bought and sold through a built-in escrow marketplace. Buyer payments are fully shielded.

Selling

The seller signs a LIST request via the API:

Signed message: "LIST:alice:1000000:u1seller...addr...:3"

This lists alice.zec at 0.01 ZEC (1,000,000 zatoshis). The seller provides a payout address.

Buying

The buyer sends a shielded transaction to the escrow address with a BUY memo:

ZNS:v1:BUY:alice:f7g8h9...buyer_pubkey...:u1buyer...addr...:1000000

The scanner validates:

• Name must be listed for sale
• Payment must match the listing price exactly
• If valid: name transfers to buyer, payout queued for seller
• If invalid: refund queued for buyer

Buyer                          Zcash Blockchain                   ZNS Scanner
  |                                  |                                 |
  |-- send ZEC to escrow + memo ---->|                                 |
  |   (shielded BUY transaction)     |                                 |
  |                                  |-- new block ------------------>|
  |                                  |                                 |-- validate purchase
  |                                  |                                 |-- transfer name
  |                                  |                                 |-- queue seller payout

All Operations

Operation	Method	Description
LIST	Signed API	List a name for sale
DELIST	Signed API	Remove a listing
BUY	On-chain memo	Purchase a listed name (shielded)
CONFIRM_SALE	Signed API	Finalize an off-protocol sale