COLDCARD BUG DEMO: Duplicate Wallet Found in 4.7 Seconds Developer John S built a simulator to illustrate the severity of the COLDCARD #entropy bug. On an M1 Max, it found two identical wallet seeds after generating about 1.26 million seeds, taking just 4.7 seconds. Statistically, a duplicate seed would be expected roughly once every 1.3 million wallet generations under the simulated 40-bit entropy model. He says the most concerning part is that this kind of test could have been run in seconds...
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COLDCARD BUG DEMO: Duplicate Wallet Found in 4.7 Seconds
Developer John S built a simulator to illustrate the severity of the COLDCARD entropy bug.
On an M1 Max, it found two identical wallet seeds after generating about 1.26 million seeds, taking just…
Developer John S built a simulator to illustrate the severity of the COLDCARD entropy bug.
On an M1 Max, it found two identical wallet seeds after generating about 1.26 million seeds, taking just…
RT by @skwp: Coinkite has now confirmed the #entropy bug also impacts Mk4, Mk5, and Q models. Seeds generated on a Mk3 are severely affected; seeds generated on a Mk4, Mk5, or Q are also weakened, though harder to crack.
Our recommendation: if any key in your wallet or multisig quorum came from a seed generated on a Coldcard (without dice rolls or a passphrase), replace that key and migrate funds to a new wallet. You can generate the new seed on a different vendor’s hardware, or continue with...
Our recommendation: if any key in your wallet or multisig quorum came from a seed generated on a Coldcard (without dice rolls or a passphrase), replace that key and migrate funds to a new wallet. You can generate the new seed on a different vendor’s hardware, or continue with...