Bitcoin BIP-360 / Pay-to-Merkle-Root (P2MR)
artifactCrypto & Digital ID
There's a fix to keep quantum computers from someday cracking Bitcoin — but most people won't bother to use it in time.
Who they are
Bitcoin BIP-360 (Pay-to-Merkle-Root), a proposed change to how Bitcoin transactions are secured.
What they do
It's a technical escape hatch that removes the part of Bitcoin most vulnerable to future quantum computers.
How it works
It disables the quantum-weak 'Taproot key-path' spending so funds are protected against a powerful quantum computer recovering keys — but each user has to actively move their own money to the new format, and doing so makes transactions noticeably bigger and more expensive.
Why it matters
The engine's read is that most ordinary holders won't migrate in time, so on 'Q-Day' their coins could be swept up by quantum-ready attackers — a huge wealth transfer from the unprepared. The engine holds several readings at once (a coordinated defense, a normal security upgrade, or a voluntary migration most won't do) without settling on one.
The engine's record — word for word
Proposed Bitcoin soft-fork output type that disables the quantum-vulnerable Taproot key-path spend (omits internal key + tap-tweak), forcing script-path spends to mitigate long-exposure CRQC key recovery. The architectural escape hatch for Bitcoin — but requires individual users to actively migrate funds, and the witness payload balloons (37 + 32*m bytes per input vs P2TR). Engine reading: most retail will fail to migrate in time → mass capitulation to custodial entities + a Q-Day wealth transfer from negligent holders to quantum-ready actors. Apex (a) protocol-level coordinated defense; (b) structural crypto-agility response; (c) compound-null: voluntary migration most won't execute — all load-bearing.
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