Private Blockchain

A private blockchain is a distributed ledger run by a single organisation, where one authority decides who may read the data, submit transactions and operate nodes. It keeps the data structure of a public chain — hash-linked blocks, cryptographic signatures, a shared history — but drops open participation, so throughput is higher and fees are usually irrelevant. The security model differs fundamentally: there is no independent mining or staking economy defending the ledger, and the operator can in practice rewrite or roll back state. That makes private blockchains useful for internal record keeping, supply-chain tracking or settlement between branches, but a token issued on one carries no censorship resistance and no public auditability unless it is anchored to an open network.