| CPC G06F 21/561 (2013.01) [H04L 63/145 (2013.01); G06F 2221/034 (2013.01)] | 16 Claims |

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1. A requester device comprising:
a processor configured to:
request inspection of electronic data by at least one inspection device;
record attribute information related to the electronic data, including at least one of an address of the electronic data or a hash value of the electronic data, in a blockchain network; and
record the electronic data in a predetermined area for retrieval by the at least one inspection device, wherein the predetermined area is outside the blockchain network.
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