Satellite Blockchain Consensus Using Physical Oracles to Cut Energy
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Solution Overview
Problem
The existing blockchain technologies face high energy consumption and low throughput due to the Proof of Work (PoW) consensus mechanism, and integrating satellite technology with blockchain has limitations such as high access thresholds and reduced decentralization.
Innovation Solution
A satellite-based blockchain architecture utilizing a constellation of satellites and a terrestrial miner network with a consensus protocol that generates oracles for selecting winners among miners, reducing energy consumption and lowering access thresholds by leveraging satellite downlinks and the proof of stake mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PoW consensus mechanism is used, then security and decentralization are improved, but energy consumption increases and throughput decreases
Solution Approach 1:
The patent extracts the oracle generation function from terrestrial miners and assigns it to satellites. Satellites generate oracles using onboard sensors (e.g., cosmic ray detectors, radiation sensors) that naturally detect physical phenomena without requiring energy-intensive computations. This separates the random oracle generation from the PoW mining process, reducing overall energy consumption while maintaining security through the inherent randomness of physical measurements.
Solution Approach 2:
The patent replaces the mechanical/computational PoW system with a hybrid system where satellites provide cryptographic oracles based on physical phenomena (cosmic rays, radiation, electromagnetic signals). This substitution eliminates the need for energy-intensive hash computations while maintaining the decentralization and security properties through the use of unpredictable physical random sources.
2Reliability
If PoW consensus mechanism is used, then security is improved, but throughput decreases
Solution Approach 1:
The patent extracts the oracle generation function from the terrestrial blockchain network and assigns it to satellites. This separation allows terrestrial miners to focus on block production and transaction validation without the overhead of oracle generation, thereby increasing throughput. The satellite-based oracles provide security-critical randomness without constraining the transaction processing speed of the terrestrial network.
3Speed
If satellites are used as relays with authorized ground stations for uplink, then information propagation is improved, but access threshold increases and decentralization decreases
Solution Approach 1:
The patent inverts the traditional satellite communication model by eliminating the need for uplinks from ground stations. Instead of requiring users to upload blocks or transactions to satellites via authorized ground stations, the system uses satellite downlinks to broadcast oracles and block information to all users. This inversion removes the access threshold associated with uplink authorization while maintaining fast information propagation through satellite's wide coverage and ubiquitous connectivity.
Data Source
AI summary
The present invention discloses a satellite-based blockchain architecture, including a terrestrial blockchain miner network, a constellation system, and a consensus protocol coordinating the constellation system and the terrestrial blockchain miner network. In each round, a satellite generates an oracle, and satellites broadcast the oracle to the terrestrial blockchain miner network. The oracle selects a terrestrial miner as a winner of the current round based on a specific rule. The winning terrestrial miner has the right to generate a new block in the round, and broadcasts the new block to other miners by using the terrestrial blockchain miner network. Other miners receiving the new block check the validity of the block, and if the check succeeds, the block is broadcast to other miners by using the terrestrial blockchain miner network. The present invention significantly improves the efficiency and throughput of a blockchain, and optimizes and reduces the energy consumption of executing a consensus protocol by a terrestrial blockchain miner network.