Redactable Blockchain – or – Rewriting History in Bitcoin and Friends

@article{Ateniese2016RedactableB,
  title={Redactable Blockchain – or – Rewriting History in Bitcoin and Friends},
  author={Giuseppe Ateniese and Bernardo Magri and Daniele Venturi and Ewerton R. Andrade},
  journal={2017 IEEE European Symposium on Security and Privacy (EuroS&P)},
  year={2016},
  pages={111-126}
}
We put forward a new framework that makes it possible to re-write or compress the content of any number of blocks in decentralized services exploiting the blockchain technology. As we argue, there are several reasons to prefer an editable blockchain, spanning from the necessity to remove inappropriate content and the possibility to support applications requiring re-writable storage, to "the right to be forgotten." Our approach generically leverages so-called chameleon hash functions (Krawczyk… CONTINUE READING

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