Publicity just isn’t proof that Bitcoin’s cryptography has been damaged. A visual public key provides the start line for a hypothetical assault that derives the corresponding personal key; it doesn’t itself give somebody the flexibility to spend the cash.
Deal with Reuse Drives Most Publicity
Glassnode’s methodology counts publicity “at relaxation”: cash held in outputs whose public keys are already identified, with out ready for the holder to spend them. It separates publicity brought on by pockets practices from publicity constructed into an output’s design.
Schultze-Kraft’s breakdown attributes about 4.33 million $BTC to deal with reuse. Some output sorts initially conceal public keys behind hashes, however spending reveals them. Any remaining or future stability tied to the identical revealed key then loses that layer of safety.
One other roughly 1.94 million $BTC is uncovered by output kind, he stated. Glassnode’s methodology contains early pay-to-public-key outputs, naked multisignature outputs and fashionable Taproot outputs on this class.
That distinction issues for anybody contemplating a transfer: a recent Bitcoin deal with doesn’t essentially conceal its public key. The Taproot specification explicitly contains the general public key within the output. Taproot additionally makes use of Schnorr signatures fairly than ECDSA, so the publicity tally just isn’t an ECDSA-only rely.
Drake’s warning stays a forecast, not a disclosed profitable assault. Coinbase head of cryptography Yehuda Lindell challenged it, saying that, to his understanding, there was “no proof in any way pointing to a break of many years outdated hardness assumptions like elliptic curve cryptography.”
Nor does retaining a key hidden at relaxation make cash immune to each future assault. Glassnode distinguishes that safety from the interval when a spend reveals the important thing. Drake himself urged holders to not rush, warning that “a rushed migration would do extra hurt than good.”
