SYSTEM AND METHOD FOR SUPPORTING EXTERNAL INTERFACE BASED ON BLOCK CHAIN

Blockchain-based smart contract to reduce traffic

This technology is about a distributed consensus system and method for the external interface in a blockchain-based smart contract. It is about an external device call interface that enables external device calls and a blockchain-based external service support system using public key verification.

The reason external device calls cannot be made in existing blockchain-based smart contracts is because smart contracts are executed on all nodes.

This technology uses transaction application methods of block generation nodes and block verification nodes to solve the problem of not being able to call external devices. By separating, traffic generated from external devices can be reduced.

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Key Features:

• When creating a block, if there is a request to call an external device, the block generation node directly calls it and stores the response in the block
• The external device signs and sends its response with a public key-based structure
• The block verification node verifies the transaction by checking whether the response stored in the block is correctly configured through public key verification
• All networks agree on the response content

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