March 2019
Intermediate to advanced
636 pages
27h 50m
English
book
Blockchain Development with Hyperledger
by Salman A. Baset, Luc Desrosiers, Nitin Gaur, Petr Novotny
Content preview from Blockchain Development with Hyperledger
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Deploying and updating chaincode
Once members have decided to participate in a channel, they may choose to deploy and instantiate chaincode (a.k.a smart contract). A chaincode defines how key/value pairs which are scoped to a channel will be updated or read from. A chaincode can define its endorsement policy—that is, it may require a digital signature from some or all peers in the network. Due to the permissioned nature of Hyperledger Fabric, a chaincode requiring a digital signature from a peer (endorsement) must be installed and instantiated on a peer. See Chapter 5, Exposing Network Assets and Transactions and Chapter 7, A Business Network Example, for more details on deploying chaincode.
Before deploying chaincode on a channel, it is ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.