External data access method, device and system of block chain, equipment and medium
An external data and blockchain technology, applied in the blockchain field, can solve the problems of consensus failure and high pressure on external data servers, and achieve the effect of improving accuracy, avoiding repeated calls and reducing pressure.
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[0040] Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described here.
[0041] figure 1 It is a schematic structural diagram of a blockchain external data access system provided by the embodiment of this application. Such as figure 1 As shown, the external data access system of the blockchain is set in the consortium chain, including at least one endorsement node 11 and an oracle server 12; wherein, the endorsement node 11 is set with a user contract and an oracle contract, and the oracle server 12 corresponds to At least one endorsement node 11, the endorsement node 11 is used to: obtain the external data access request of the...
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