December 2018
Beginner to intermediate
564 pages
17h 34m
English
Content preview from Blockchain Developer's Guide
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Hyperledger Sawtooth
Hyperledger Sawtooth, like the rest of the Hyperledger family, is built for permissioned (private) networks rather than public networks, such as Ethereum, Bitcoin, and so on. As an enterprise-oriented blockchain system, it is designed around allowing different companies to coordinate using a blockchain and smart contracts. Originally developed by Intel, Sawtooth uses a unique consensus algorithm called Proof of Elapsed Time, or PoET.
PoET uses a lottery-based system for leader election. Using special Intel technology called the Trusted Execution Environment (TEE), along with Software Guard Extensions (SGX), available on some Intel chipsets, the leader is elected by each node generating a random wait time, with the shortest ...
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