The mine is not open yet. The muster is. The ten thousand OMEN hold the charters - pick the flag you will dig under, and your oath lands on the live board the moment you swear. Crews formed now are first in the ground at launch.
Phantom, connected in one click. No transaction, no signature, nothing to approve - the wallet is only your name on the roster.
One oath per wallet. Their hashpower is the engine your wage will come from at launch, and their cut is the price of it. You may defect until the mine opens.
Every oath is counted live. When the mine opens, your crew digs from day one and your cut is paid out of your foreman's stream, on their declared terms.