Intro to R3 Corda Blockchain Development | Coding Bootcamps Blockchain Training

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If you are new to the blockchain technology, taking our Introduction to Blockchain Technology self-paced course is highly recommended. Also, for a comprehensive coverage of blockchain development with Corda or mastering Java & Kotlin programming languages, taking our below self paced courses is highly recommended:

Corda

Corda is considered a private permissioned blockchain. It is a specific-purpose distributed ledger technology, built from the ground up, to support the financial and insurance industries. It focuses on transaction privacy using a shared immutable ledger that's agreed upon by all parties through smart contracts.
To maintain the shared immutable ledger, Corda was built according to the following core concepts:

State objects: These are point-in-time facts about the data in the enterprise, like a stock or bond, or customers. It represents the current state of the facts and is updated through transaction processing.
Transactions: These represent the state transition of state objects through a life cycle. Corda employs a UTXO data model to reflect the state transition in the ledger. Both state objects and transactions are persisted in the enclave of a node, which can be any kind of database. A transaction must be validated by the contracts, which is a legal agreement in smart contracts between transacting parties.
Flows: These allow transacting parties to coordinate actions and complete transactions without a central controller.

In Corda, consensus is achieved in two ways:

One is transaction validity, which is the agreement in smart contract code between transacting parties, and includes all the signatures that are needed to authorize the transactions.
Another is transaction uniqueness to prevent double spending. Corda introduces the Notary concept to prove the transaction's uniqueness.

Like Hyperledger, consensus in Corda is pluggable, which allows notary clusters to choose a consensus algorithm, fitting the needs of the business transactions. In Corda, a “notary” is an abstraction of an ordering service. A “notary cluster” is a collection of notary nodes using a consensus algorithm among them. This consensus algorithm may or may not be byzantine fault tolerance. Newer high-performance notary services, like crash fault tolerance (CFT) notary services were prototyped, which are based on Atomix, a light- weight Raft-based fault-tolerant distributed coordination framework.
A smart contract can be developed using Java, which is a good selling point for many enterprise developers since Java is a relatively dominant programming language. In fact, it can be written in any JVM language, for example, Kotlin or Scala, and has access to the full capabilities of the language.
Corda is supported by a network of Coda nodes, and only authorized nodes can join the network with permissions. The transaction is only accessible by the transacting parties, which ensures the transaction's privacy.

If you like to explore more private distributed ledger platforms, reading the below articles is highly recommended:

This article is written in collaboration with Brian Wu who is a leading author of “Learn Ethereum: Build your own decentralized applications with Ethereum and smart contracts” book. He has written 7 books on blockchain development.

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Articles and Tutorials on Blockchain Technology

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