Smart contracts (blockchains, distributed ledgers) and rights management broadly construed are the themes of today's Spotlight Patents. Assigned to Accenture, the first patent addresses techniques for quantum information interception prevention at least in part using smart contracts. Assigned to Alipay (CN), the second patent addresses techniques for executing a smart contract and a blockchain node.
11,387,993, "Quantum information interception prevention," assigned to Accenture.
Methods, systems, and apparatus for transmitting qubits encoding quantum information with reduced risk of interception from an eavesdropper. In one aspect, a method includes encoding quantum information into an information qubit; encrypting the information qubit, comprising performing i) a parity operation on the information qubit and a parity control qubit and ii) a phase operation on the information qubit and a phase control qubit; performing, by a sender party, a sequence of one or more quantum logic gates on the phase control qubit; sending the information qubit, parity control qubit, and phase control qubit to a recipient party; and sending data identifying the sequence of one or more quantum logic gates to the recipient party, wherein the recipient party obtains the quantum information encoded into the information qubit using the information qubit, parity control qubit, phase control qubit, and data identifying the sequence of one or more quantum logic gates.
11,385,917, "Method for executing smart contract and blockchain node," assigned to Alipay (Hangzhou) Information Technology Co., Ltd.(CN)
The present specification provides a method for executing a smart contract and a blockchain node. An implementation of a method for executing a smart contract includes: receiving, by a blockchain node, a request for creating a smart contract, the request including a bytecode of the smart contract; starting, by the blockchain node after completing deployment of the smart contract, to compile the bytecode of the smart contract into a machine code by using just-in-time and storing the machine code; and in execution of the deployed smart contract, executing, by the blockchain node, the machine code corresponding to a bytecode of the smart contract in response to the machine code being locally stored. According to the above implementations of the present application, the blockchain node can greatly increase a speed of executing a smart contract.