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Shared Ledger

Are you interested in learning about what is a shared ledger? This article will explain in an easy way and in plain words how does a shared ledger work.

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Summary

  • The ledger is subjective from each peer’s perspective
  • Two peers are always guaranteed to see the exact same version of any on-ledger facts they share

Shared Ledger – Video

Shared Ledger – Overview

In Corda, there is no single central store of data. Instead, each node maintains a separate database of known facts. As a result, each peer only sees a subset of facts on the ledger, and no peer is aware of the ledger in its entirety.

For example, imagine a network with five nodes, where each colored circle represents a shared fact:

corda shared ledger 1

We can see that although Carl, Demi and Ed are aware of shared fact 3, Alice and Bob are not.

Equally importantly, Corda guarantees that whenever one of these facts is shared by multiple nodes on the network, it evolves in lockstep in the database of every node that is aware of it:

corda shared ledger 2

For example, Alice and Bob will both see the exact same version of shared facts 1 and 7.

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About Angel Berniz

Hey! I'm Angel Berniz, your Coach! I am a technology enthusiast sharing my knowledge worldwide. Take my FREE Online Course on Blockchain at https://courses10.com. See you inside! 🙂