Are all crypto-exchanges scams?i ask/mean ALL?

Who is Satoshi Nakamoto? -nostr.build_9938b9aa7aaffac5a69545541e308e6dc3737d8f57df434163bb641d20550e6a.gif

nostr.build_9938b9aa7aaffac5a69545541e308e6dc3737d8f57df434163bb641d20550e6a.gif

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Can anyone other than we know of "Satoshi Nakamoto" sign these Dormant Bitcoin Addresses?