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    Every transaction and block on a blockchain has an owner. An owner is any entity (person, group, or organization) with interest in the data contained within a transaction or block. Ownership is a tool to achieve trust and consensus among network members and allows for greater security, privacy, transparency, and accountability. Transaction ownership is assigned when a transaction is created and is not transferable to another entity. Assignment of block ownership occurs when the block is added to the blockchain. Block ownership is transferrable to another entity through forks. However, in most cases, it does not happen automatically. Consensus among network members is required to decide on block ownership or replacement. This decision is dependent on the specific consensus algorithm employed.