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Private blockchains are not available for the public and are maintained/secured by a cluster of trusted nodes. These kind of blockchains are useful when dealing with sensitive information.

13 votes

What are the trade-offs between Ethereum's public chain and private, permissioned chains?

There are a number of key tradeoffs between a private (a.k.a. permissioned) blockchain network and the public, main Ethereum network. Here are just a few of them: private blockchains require specif …
Jeff Coleman's user avatar
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7 votes
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What usecases do private blockchains have?

There are numerous use cases for private blockchains. Some of the many ones that are being currently considered in industry include: As an access-restricted inter-bank settlement layer for currenci …
Jeff Coleman's user avatar
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52 votes
Accepted

What is a sidechain?

Put simply, sidechaining is any mechanism that allows tokens from one blockchain to be securely used within a completely separate blockchain but still moved back to the original chain if necessary. B …
Jeff Coleman's user avatar
  • 22.2k