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When the pillars of some derivative blockchain have collapsed, how will we be certain about which download is the untampered version?

• ric2b 5y ago
  For Bitcoin the correct one is the one with the most accumulated proof of work that doesn't contain any invalid blocks. For Ethereum 2.0 I believe it's something about asking a friend?
  • shawnz 5y ago
    I think PoS chains typically use the chain with the most coin-days staked.