Data transmission method, apparatus, device, medium, and product

Abstract

This application discloses a data transmission method, apparatus, device, medium, and product. The data transmission method is applied to a first node in a blockchain. The method may include: receiving a data acquisition request sent by a second node, the data acquisition request including a data identifier and identifiers of m consensus nodes; selecting n identifiers from the m consensus node identifiers and sending a first verification request to the consensus nodes indicated by the n identifiers, so that the n consensus nodes can decrypt a first parameter to obtain a second parameter, and determine whether the parameter includes the second parameter, thereby obtaining a first verification result; n is less than or equal to m; and, upon receiving the first verification result sent by the n consensus nodes and determining that the first verification result indicates that the parameter includes the second parameter, sending the data indicated by the data identifier to the second node. This can reduce the computing power consumption of nodes that have reached consensus and improve the data transmission efficiency between different nodes.

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