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Ethereum is at the center of a decades-long cryptographic challenge that has stumped researchers since the early 2000s — and a newly published technical breakdown is making the case that the field is closer to a breakthrough than ever before. The problem is called indistinguishability obfuscation, or iO, and it sits at the frontier of […] The post Ethereum: inside the race to crack a 20-year crypto problem appeared first on Rolling Out .