Various copyright alternatives in an alternative compensation systems (ACS) have been proposed as ways to allow the widespread reproduction of digital copyrighted works while still paying the authors and copyright owners of those works. This article only discusses those proposals which involve some form of government intervention. Other models, such as the street performer protocol or voluntary collective licenses, could arguably be called "alternative compensation systems" although they are very different and generally less effective at solving the free rider problem. The impetus for these proposals has come from the widespread use of networks. A few authors argue that an ACS is simply the only practical response to the situation. But most ACS advocates go further, holding that P2P file sharing is in fact greatly beneficial, and that tax or levy funded systems are actually more desirable tools for paying artists than sales coupled with DRM copy prevention technologies. The artistic freedom voucher (AFV) proposal argues that the current copyright system providing a state enforced monopoly leads to "enormous inefficiencies and creates substantial enforcement problems". Under the AFV proposed system, individuals would be allowed to contribute a refundable tax credit of approximately $100 to a "creative worker", this contribution would act as a voucher that can only be used to support artistic or creative work. Recipients of the AFV contribution would in turn be required to register with the government in similar fashion to that of religious or charitable institutions do so for tax-exempt status. The sole purpose of the registration would be to prevent fraud and would have no evaluation of the quality or work being produced. Alongside registration, artists would also now be ineligible for copyright protection for a set period of time (5 years for example) as the work is contributed to the public domain and allowed to be freely reproduced. The AFV would not affect creative workers ability to receive funds via live performances.