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Blockstream researchers Jonas Nick and Mikel Kudenov published a paper on hash-based, quantum-resistant signature schemes for Bitcoin, exploring trade-offs for a potential new address type.
Jonas Nick of Blockstream has developed post-quantum signing algorithms like "shrinks and shrimps" that are hash-based, offering security against quantum attacks but resulting in significantly larger transaction signatures and potentially reduced transactions per second.
Jonas Nick details Shrimps, a post-quantum hash-based signature scheme where signatures are 350 bytes on a primary stateful device. If that device is lost, imported devices produce 2.5 kilobyte signatures, with a final 8 kilobyte fallback for catastrophic failure.
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