Today, the best quantum hardware can just about factor 21 (3 x 7).
Blockstream Research hired Mikhail Kudinov, one of the cryptographers behind NIST's post-quantum signature standard, and we have already proposed OP_CHECKSHRINCS, an optimized hash-based signature opcode for Bitcoin.
https://youtube.com/shorts/SfiP1Aw7NvM?feature=share
How we are making Bitcoin post-quantum secure:
https://blog.blockstream.com/op_checkshrincs-a-hash-based-signature-opcode-for-post-quantum-bitcoin/
Blockstream
npub1jg…l6n8n
2026-07-23 23:20:16 UTC
Author Public Key
npub1jg552aulj07skd6e7y2hu0vl5g8nl5jvfw8jhn6jpjk0vjd0waksvl6n8nSeen on
wss://premium.primal.netPublished at
2026-07-23 23:20:16 UTCEvent JSON
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"content": "Today, the best quantum hardware can just about factor 21 (3 x 7).\n\nBlockstream Research hired Mikhail Kudinov, one of the cryptographers behind NIST's post-quantum signature standard, and we have already proposed OP_CHECKSHRINCS, an optimized hash-based signature opcode for Bitcoin.\n\nhttps://youtube.com/shorts/SfiP1Aw7NvM?feature=share\n\nHow we are making Bitcoin post-quantum secure: \n\nhttps://blog.blockstream.com/op_checkshrincs-a-hash-based-signature-opcode-for-post-quantum-bitcoin/",
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