Method for high-security data transmission of blockchain

A method for high-security data transmission of a blockchain, comprising:

• a source node device broadcasting a data packet to at least one destination node device, wherein said data packet has a random variable and a piece of transmission data;
• at least two cooperative node devices in said blockchain receiving said data packet broadcasted and further forwarding said data packet to said destination node device to make said destination node device receive said data packet once again;
• while a number of said data packets, which are transmitted by said source node device and said cooperative node devices and received by said destination node device, is equal to said random variable, said destination node device sending a report signal to said source node device to enable said source node device to broadcast a stop broadcasting request to said blockchain to make other node devices in said blockchain stop forwarding said data packet to said destination node device;
• said destination node device comparing said transmission data of said data packets, selecting one said data packet having a maximal number of identical said transmission data as a correct data packet, and storing said correct data packet;
• and
• said source node device searching all said node devices in said blockchain to make node devices having high computation capacity function as edge node devices;
• storing said data packet and positions of said cooperative node devices in said edge node devices to generate a piece of block information;
• and said edge node devices broadcasting said block information to all said node devices for storage.