[Feat]: Charge deposits only, so no registration or transfer fee is stuck in the escrow #337

Component

Registration

Priority

P1

Summary

Two fees go into DotnsNameEscrow.protocolFees, which nothing can withdraw, burn or sweep. Only an upgrade could move the money, and on Paseo it already holds 20 PAS.

• Cross-payer registration (depositProtocolFee): when someone else pays for registration.owner, the price becomes a fee and the owner's position gets 0. Registering under your own key and then transferring avoids it, so it only hits honest sponsors.
• Transfer fee (chargeTransferFee, priced by PopRules.transferFloor): the name's price, charged when the receiver's tier is too low to register a name of that length (reach) or is lower than the sender's tier (downgrade).
  • Downgrade mostly charges owners moving names of nine characters or more to their own multisig, hardware wallet or contract, none of which has personhood.
  • Reach puts a price on moving a six-to-eight character name to an account without personhood, but doesn't prevent it.

MainNet isn't deployed yet, so this can be fixed before any funds are at stake.

Proposal

• Registration: the price is always a refundable deposit in the owner's position, whoever pays.
• Names of nine characters or more: transfer for free.
• Granted names: transfer freely so holders can rotate keys. The registrar marks them at mint, as it does soulbound names.

Acceptance criteria

• A cross-payer registration seeds the owner a refundable deposit.
• Transfers of names of nine characters or more, and of granted names, cost nothing.
• The README economics section and dotns-sdk describe the new model.