A method for acquiring rights to lease a drilling rig using client devices with secure information and qualifications bulletin boards is disclosed. The method authenticates a leassee of a drilling rig using a leassee client device to communicate with leassors using a secure server system. The leassee creates a bid proposal using a secure database server system and invites leassors to reply to the bid proposal and form tender offers. Then, the leassee replies to tender offers and awards a lease contract based on the best leasing conditions.