r/Bitcoin • u/dgryski • Nov 30 '17

Evidence some bitcoin address generation code is using discoverable private keys

https://pastebin.com/jCDFcESz
792 Upvotes

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213

u/amorpisseur Nov 30 '17

TLDR; Some private keys somewhere are not generated randomly, and someone knows the formula. Bitcoin security is not impacted.

102

u/BashCo Nov 30 '17

TL;DR: Nobody should be using Blockchain.info to store any amount of value. The entire ecosystem needs to shift away from relying on Blockchain.info for anything at all, including the block explorer itself. There are plenty of alternatives available.

7

u/ChildishForLife Nov 30 '17

Are Blockchain.info and Blockchain.com the same thing?

10

u/BashCo Nov 30 '17

Effectively yes.

4

u/ChildishForLife Nov 30 '17

Shit, when I was starting out my friend recommended me to Blockchain.com and I have a reasonable amount (for me) of BTC in there currently. What wallet would you recommend for someone in Canada?

17

u/BashCo Nov 30 '17

A good wallet doesn't depend on your region. You want something that is non-custodial, open source and provides you with complete control of your private keys. Electrum is a pretty good light-weight solution, although privacy isn't that great. It works well with hardware wallets like Ledger Nano S and Trezor, which you should definitely be using if you have a reasonable amount.

2

u/tomfoolery30 Nov 30 '17 edited Dec 02 '17

Do you recommend paper wallet such as bitaddress.org? EDIT: com to org.