Embodiments of the present invention provide a method, system and computer program product for a wager registration for aftermarket brokered wagers. A wager registration method for aftermarket brokered wagers includes receiving from an initial bettor in an aftermarket brokered wager computing system a digital image of a physical wager established with a purveyor of wagers independent of the aftermarket brokered wager computing system. The method additionally includes validating an authenticity of the digital image and responsive to the validation, writing a record to a registry indicating one hundred percent (100%) ownership of the wager by the bettor at an amount and odds indicated by the image. The method yet further includes confirming the record upon receipt of the physical wager and subsequently updating the record in the registry to indicate only a fractional ownership of the wager responsive to a third-party aftermarket buyer purchasing a fractional share of the wager.