time-lock on contract's remaining balance

[CodiePP]

as time runs, the contract accumulates fees which cannot be retrieved by the user nor by the provider, but only by the owner of the contract.

• fee_init @ 0.2
• fee_24h @ 0.05 per 24 hours

The contract should support a time-lock:

• after stop() the contract's balance is locked for 10 days
• in this time the user and provider may retrieve their balance
• after 10 days the contract's owner may transfer the remaining balance