| CPC G06F 21/316 (2013.01) [G06F 21/45 (2013.01); G06Q 20/02 (2013.01); G06Q 20/4016 (2013.01)] | 20 Claims |

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1. A non-transitory computer readable medium having program instructions stored therein that are executable by a computing device to cause the computing device to perform operations comprising:
providing, to a service computing system, a service request that identifies an action and includes an anonymous identifier for a user of the computing device;
receiving, from the service computing system, a score request for a trustworthiness score indicative of the user's trustworthiness;
in response to receiving the score request from the service computing system, providing a non-anonymous identifier indicative of the user's identity to a scoring computing system;
receiving the trustworthiness score and a corresponding score signature from the scoring computing system; and
in response to receiving the score and the score signature from the scoring computing system, providing the score to the service computing system and without providing the non-anonymous identifier indicative of the user's identity to the service computing system.
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