Tokens held by MSA-owned accounts can be withdrawn

[JoeCap08055]

Feature Description

Details

Related to #2351, a holder of a control key for an MSA should be able to "withdraw" tokens held by the associated address to another address

A/C

• Only the complete balance held by the MSA account may be withdrawn
• The withdrawal MUST be approved by a Control Key of the MSA that is the source of the withdrawal
• The withdrawal MUST be from the holder of the private key of the address the tokens are withdrawing to
• The MSA Control Key MUST approve the specific address the withdrawal is going to
• Allow Withdrawal as paid extrinsic with fees paid by the transactor
• Allow Withdrawal as free extrinsic with fees paid by the MSA balance
  • Fixed Cost is fine
  • Option: ~Prepaid fixed cost (paid in to transfer to an MSA in the first place)~

Options

Winner: Withdrawal Tx is submitted by the token withdrawal target (with signature from MSA Control Key)

1. ~Withdrawal Tx is submitted by the MSA Control Key (with signature from withdrawal target)~ Don't want some control keys to have to do the act of moving tokens
2. Withdrawal Tx is submitted by the token withdrawal target (with signature from MSA Control Key)
3. ~Withdrawal Tx takes a long-term, persistent approval step submitted by the MSA Control Key and then a withdrawal step submitted by the token withdrawal target~ Control Key permissions is effectively the same
4. ~Withdrawal Tx takes a one-time per withdrawal approval step submitted by the MSA Control Key and then a withdrawal step submitted by the token withdrawal target~ Uselessly complex
5. ~Withdrawal Tx via Control Key permissions (see below)~ Future

Withdrawal Tx via Control Key permissions

• Add permissions to control keys (specifically payout permission, but future support for capacity only permission setting)
• Add way to add generic control key to MSA with permissions (non-permission version exists on chain, not in FA yet)
• Withdrawal as free extrinsic with fees paid by the MSA balance

Discussion

(to be moved to A/C once requirements are fully determined):

• Q: Any restrictions on the destination address? Nope
• Q: Do we want to require a signature to prove control of the destination address? Is transactor, so has tx signature

Searched for Related Issues

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