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A developer leading Ethereum's Kohaku initiative says the network can protect user accounts against quantum computing attacks for roughly 7 cents each, citing a proposal built around a signature scheme called SPHINCS-.
The claim frames quantum resistance as a near-term, affordable upgrade rather than a distant engineering problem — though it comes with the caveat that a longer-term fix is still being worked out.
What SPHINCS- Actually Is A digital signature scheme is the cryptographic lock on every blockchain account: it proves that the person sending a transaction controls the private key behind it.
The encryption methods currently protecting Ethereum accounts rely on mathematical problems that classical computers cannot solve in any practical timeframe.
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