March 2018
Beginner to intermediate
656 pages
20h 9m
English
Content preview from Mastering Blockchain - Second Edition
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Consensus
The consensus model in Corda is quite simple and is based on notary services that are discussed in a later section of this chapter. The general idea is that the transactions are evaluated for their uniqueness by the notary service and, if they are unique (that is, unique transaction inputs), they are signed by consensus services as valid. There can be single or multiple clustered notary services running on a Corda network. Various consensus algorithms like PBFT or Raft can be used by notaries to reach consensus.
There are two main concepts regarding consensus in Corda: consensus over state validity and consensus over state uniqueness. The first concept is concerned with the validation of the transaction, ensuring that all required ...