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Selective Deletion in a Blockchain

机译：在区块链中选择性删除

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摘要

The constantly growing size of blockchains becomes a challenge with the increasing usage. Especially the storage of unwanted data in a blockchain is an issue, because it cannot be removed naturally. In order to counteract this problem, we present the first concept for the selective deletion of single entries in a blockchain. For this purpose, the general consensus algorithm is extended by the functionality of regularly creating summary blocks. Previous data of the chain are summarized and stored again in a new block, leaving out unwanted information. With a shifting marker of the Genesis Block, data can be deleted from the beginning of a blockchain. In this way, the technology of the blockchain becomes fully transactional. The concept is independent of a specific block structure, network structure, or consensus algorithm. Moreover, this functionality can be adapted to current blockchains to solve multiple problems related to scalability. This approach enables the transfer of blockchain technology to further fields of application, among others in the area of Industry 4.0 and Product Life-cycle Management.
机译：随着使用情况的增加，块状的不断增长的大小成为挑战。特别是在区块链中存储不需要的数据是一个问题，因为它不能自然地删除。为了抵消这个问题，我们介绍了一个在区块链中选择性删除单个条目的第一个概念。为此目的，通过定期创建摘要块的功能扩展了一般共识算法。以前的链条数据总结并在新块中再次存储，删除了不需要的信息。对于Genesis块的换档标记，可以从区块链的开头删除数据。以这种方式，区块链的技术变得完全交易。该概念独立于特定的块结构，网络结构或共识算法。此外，该功能可以适用于当前区块链，以解决与可扩展性有关的多个问题。这种方法使得将区块链技术转移到进一步的应用领域，其中包括工业4.0领域和产品生命周期管理。

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