The full video from 4:41 can be viewed here [ Ссылка ]
Consumers of downstream information lack a homogeneous perspective on upstream processes. Despite formal guarantees of universal consensus, blockchain databases offer no better visibility. As a simple example, an observer may witness a different list of confirmed Ethereum transactions depending on whether she scrapes via TrueBlocks or Etherscan. We survey instances of this prevalent phenomenon and observe damaging consequences in complex, multi-party applications.
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