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November 12, 2019, 06:28:16 PM *
News: Help collect the most notable posts made over the last 10 years.
 
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Author Topic: BTC/ETH bars and wallet cards  (Read 191 times)
ChiBitCTy
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March 16, 2019, 09:45:50 PM
Last edit: March 17, 2019, 01:43:22 PM by ChiBitCTy
Merited by Kryptowerk (2), BTCcollector19 (1)
 #1

Just thought I'd share. Bit pricey, but kinda cool.  ( I have no affiliation w/this Co. )



I spoke with the owner who said they’re willing to ship to the States. Simply email sales@coinplus.com
https://www.amazon.fr/s?srs=16095238031
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The Bitcoin Forum is turning 10 years old! Join the community in sharing and exploring the notable posts made over the years.
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March 16, 2019, 10:11:40 PM
 #2

Cool bro! Thanks for sharing!

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jackbauercsgo
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March 17, 2019, 01:05:33 AM
 #3

Pretty interesting how they use 2 companies to offset the private keys risk.  I had to google translate some of the info -

"For other physical hardwares like paperwallets the trust in the printer must be total because it has access to the private key during the creation of the support. The solution brought by COINPLUS (global patent pending) is to divide the secrets between several engravers to guarantee confidence in the Solo. Two secrets are generated, etched and hidden on the support by two different companies. The exchange of public information related to these two secrets allows both companies to generate a common public address without knowing the secret of the other company. To recover crypto-assets stored on a SOLO, it is necessary to calculate the SOLO private key. This can be done through the mobile application developed by COINPLUS for android and iphone or computer thanks to COINPLUS software for private key calculation. This software is available on github. The computed private key can be imported into most softwares wallets (eg electrum, metamask, geth, bitcoin-core). The SOLO allows quick access to a "crypto account". That is, it is immediately possible to send crypto-active on a SOLO without any activation or configuration. SOLO does not depend on COINPLUS because all the necessary information is engraved on it. SOLO is very simple because it does not contain electronics. It is therefore easily auditable. The COINPLUS SOLO BAR version is a laser engraved metal bar available in chrome, copper, silver or gold plated steel."
ChiBitCTy
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March 17, 2019, 02:01:27 AM
 #4

Pretty interesting how they use 2 companies to offset the private keys risk.  I had to google translate some of the info -

Thanks for posting that! I didn’t even read it tbh. Id never put any bitcorn on it. I’m curious what the Mr Robots around here think of this method.
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March 20, 2019, 06:39:14 AM
Last edit: March 20, 2019, 06:51:14 AM by odolvlobo
 #5

Pretty interesting how they use 2 companies to offset the private keys risk.  I had to google translate some of the info -

It should work. There is a risk that an engraver might make a mistake if it is not verifiable before shipping.

I'm curious about the " The solution brought by COINPLUS (global patent pending) is to divide the secrets ..." because using a proprietary solution is not as good as using a well-known well-tested solution (e.g. Shamir's Secret Sharing algorithm).

Buy stuff on Amazon at a discount with bitcoins or convert Amazon points to bitcoins: Purse.io
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jackbauercsgo
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March 20, 2019, 02:01:53 PM
 #6

Pretty interesting how they use 2 companies to offset the private keys risk.  I had to google translate some of the info -

It should work. There is a risk that an engraver might make a mistake if it is not verifiable before shipping.

I'm curious about the " The solution brought by COINPLUS (global patent pending) is to divide the secrets ..." because using a proprietary solution is not as good as using a well-known well-tested solution (e.g. Shamir's Secret Sharing algorithm).

Agreed - and any "proprietary system" has a chance for abuse as well as the already existent cryptographical risks.
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