| http://www.w3.org/ns/prov#value | - Payment is not limited to money, but may also include other types of consideration, including products, services, and alternate currencies. [0229] Exemplary methods of accepting payment by the payment system 375 include (i) receiving hard currency (i.e., coins or bills), and accordingly the payment system 375 may comprise a coin or bill acceptor; (ii) receiving an alternate currency (e.g., a paper
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