Abstract
With the development of blockchain technology, more and more applications need out-of-chain data. Thus, blockchain oracles have become an important bridge for transferring data on and off the chain. This paper studies the mainstream blockchain oracles scheme, summarizes the shortcomings of the existing schemes and proposes a new blockchain oracle scheme based on BLS (Bohen-Lynn-Shacham) aggregation signature to ensure that off-chain data can be transferred into the blockchain in a trusted and reliable way. Specifically, the scheme uses multiple blockchain oracles to avoid the single point of failure or even a small number of malicious oracles, and improve the credibility of data. At the same time, it not only uses BLS aggregate signature to reduce the storage cost and communication overhead, but also uses commitment mechanisms to ensure the reliability and authenticity of the data. Besides, the simulation results show that the scheme can meet the practical application requirements.
Highlights
Blockchain is a decentralized, unchangeable data ledger [1]
This paper studies the mainstream blockchain oracles scheme, summarizes the shortcomings of the existing schemes and proposes a new blockchain oracle scheme based on BLS (Bohen-Lynn-Shacham) aggregation signature to ensure that off-chain data can be transferred into the blockchain in a trusted and reliable way
It uses the privacy protection function of Transport Layer Security (TLS) to generate non-interactive session proof based on blockchain smart contracts that can be effectively verified by third parties
Summary
Blockchain is a decentralized, unchangeable data ledger [1] It stores and verifies data through network nodes, which can solve the trust problem between unrelated nodes. Because the off-chain data is independent of the blockchain, a specific solution is needed to ensure the reliability and consistency of the off-chain data. In order to broaden the application scenarios of blockchain and ensure the reliability of data on the chain, this article summarizes the advantages and disadvantages of the current mainstream blockchain oracle scheme and proposes a new blockchain oracle based on BLS (Bohen-Lynn-Shacham) aggregation signature. The scheme reduces the storage space of the blockchain while ensuring the credibility of the on-chain data, and proves the practical value of the scheme through simulation experiments. Conducted experiments on the program, and verified the feasibility of the program through comparison; Chapter 6 summarizes the work of this article and proposes the research plan
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
