Bitcoin Forum
June 08, 2024, 08:38:28 AM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 ... 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 [268] 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 »
5341  Bitcoin / Development & Technical Discussion / Re: [GUIDE] Encoding Bip39 Seed Phrase to Hex Code on: November 09, 2018, 04:16:00 PM
It is better to encrypt your keys or seed with a password. Encoding can be reversed (and should never be used "for security purposes" because it is not related to security), encryption can only be reversed if you know the password (or you crack the password but with secure passwords longer than 20 chars this isnt a problem yet). You can use gpg --symmetric --cipher-algo AES256 or openssl to aes encrypt your keys/seed with a password then encode the encrypted string to hex/base64/etc. Encryption will make the string longer but also means that no one can steal your coins if you lose your paper wallet and someone reverse engineers your encoding.

Another idea is to print your encrypted seed/keys on credit card size paper, laminate it and store copies securely in different places.

Edit: Your screenshots show google docs and windows. For anything that requires security please use linux, e.g. tails USB and avoid google services.

All very good suggestions, thank you.

The google doc is merely to share the information, I also recommend against storing private keys or seeds on cloud services.  I use an off-line computer to generate the wallet seeds, and only access the wallets using master public keys on my on-line PC.  

For this particular batch of backups I wanted to avoid encryption because I want my kids to be able to decode the seeds in case I'm no longer around.  The backups will be stored in a safe, to which my kids will receive the combination upon my demise.
5342  Other / Politics & Society / Russian Collusion is just a distraction. on: November 09, 2018, 01:24:07 PM
It's really disturbing that we're still arguing this subject.  It's obviously partisan in nature.  There has been zero evidence that Trump is being blackmailed by the Russians.  There has been zero evidence that Trump colluded with the Russians, and so what if he did? 

George Washington colluded with the French.  Woodrow Wilson colluded with the Russians, the French, and Britain, and so did F.D. Roosevelt.  Presidents have colluded with other countries to benefit (in their perception) Americans before this was the U.S.A.  The collusion in, and of itself means nothing without intent.  If there was collusion, what was the intent?  Again, the only collusion that seems to have ill intent was that of the DNC attempting to dig up dirt on Trump, and then making it up when they couldn't find any.

The telling thing about this most recent midterm election is how little the Democrats have to offer the American people.  Their main agenda is to stop Trump.  What they're missing is that stopping Trump means less prosperity for Americans.

I'm not a fan of Trump the person.  I voted for the Libertarian in 2016, because I thought Trump was a bag of narcissistic hot air.  I was wrong.  I can see that now, and I don't think I'm alone.  He's kept his promises, or at least he's attempted to.  Maybe he is a narcissist and a blowhard, but he's doing his job which is to serve America!

Sure, some Democrats want to fix Healthcare and Education.  I don't agree with their philosophy on these subjects, but that's OK.  That's why we have a democratic Republic, so these things can be debated rationally.  Most, however would rather focus on salacious distractions than actually solving the issues that plague this country.

Let's focus on solving some problems, and stop those who would distract us from arriving at the solutions.  Let's focus on the opioid problem.  Let's focus on the poverty and gang wars in our cities.  Let's fix the political indoctrination plaguing our education system.  Let's focus on the shrinking middle class.  Let's make our health care system great again.  Let's fix our national debt, and our unsustainable trade policies.

I don't care what political party you affiliate with, if you are here to solve problems I'll support you.  If all you want to do is distract from solutions, and obstruct progress then you are a part of the problem.
5343  Alternate cryptocurrencies / Altcoin Discussion / Blockchain.com announced a XLM airdrop on: November 09, 2018, 06:49:56 AM
Blockchain announced a XLM airdrop:

What are you giving away?
We have partnered with the Stellar Development Foundation to give free Stellar Lumens (XLM) to Blockchain Wallet users. XLM is a token that enables quick, low cost worldwide transactions. Learn more here. Whether you already own crypto, or are crypto curious, this is your chance to help build the future of finance.

https://www.blockchain.com/getcrypto
5344  Other / Meta / Re: Stake your Bitcoin address here on: November 08, 2018, 06:19:01 PM
Guess there was some problem with the previous one.  Signed another one please Quote and Verify. Thank You

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
This is petestheman from bitcointalk.org and today is November 8th 2018
-----BEGIN SIGNATURE-----
12ztFwCUnKC8pGydeGHrF9fy6Rcif6ZwKx
Hw/25HpQ5cVPMMoRoGL0bukhuA+bnKM1d51LUO/DQ3XrinODrSHbSMssrEJ4dK58K5iKlNURkSgGvhpiXeS4+0k=
-----END BITCOIN SIGNED MESSAGE-----

Verified.
5345  Other / Politics & Society / Re: Jim Acosta karate chops intern’s arm & loses White House press pass on: November 08, 2018, 04:56:26 PM
Everybody in that room was asking questions Trump didn't like, but he answered them.

Jim Accoster thinks the press room is actually "The Jim Acosta Show."
5346  Other / Politics & Society / Re: NOBODY IS ABOVE THE LAW—MUELLER FIRING RAPID RESPONSE on: November 08, 2018, 04:17:01 PM
It's really disturbing that we're still arguing this subject.  It's obviously partisan in nature.  There has been zero evidence that Trump is being blackmailed by the Russians.  There has been zero evidence that Trump colluded with the Russians, and so what if he did?  

George Washington colluded with the French.  Woodrow Wilson colluded with the Russians, the French, and Britain, and so did F.D. Roosevelt.  Presidents have colluded with other countries to benefit (in their perception) Americans before this was the U.S.A.  The collusion in, and of itself means nothing without intent.  If there was collusion, what was the intent?  Again, the only collusion that seems to have ill intent was that of the DNC attempting to dig up dirt on Trump, and then making it up when they couldn't find any.

5347  Other / Off-topic / Re: Flat Earth on: November 06, 2018, 10:58:16 PM
Ok no need to prove your claim.  Just wanted to make sure you didn't have anything.  Should of known you were not going to be able to prove much not knowing the difference between fission and fusion. 

Oh, I know the difference, but unlike you I'm able to admit I've been mistaken, I'm capable of learning, and I don't get butthurt when somebody calls out one of my mistakes.
5348  Other / Archival / . on: November 06, 2018, 10:46:20 PM
.
5349  Other / Off-topic / Re: Flat Earth on: November 06, 2018, 10:43:02 PM
If you could provide solid proof of stars being what you claim (I think your claiming they are thermonuclear bombs in the sky) I for one would love for you to do so.  

Proving a concept to someone requires that individual to have incite, a basic understanding of the subject, and a wiliness and the capacity to learn.  You've demonstrated you have none of the prerequisites.

Get back to me when you've proven you're qualified.
5350  Other / Off-topic / Re: Flat Earth on: November 06, 2018, 09:40:22 PM
how about you prove it's a million mile wide thermonuclear bomb Einstein.

That would be impossible, because it's not a thermonuclear bomb (nuclear fission.)  Our sun, and all stars are powered by a nuclear fusion reaction.

Proving a concept to someone requires that individual to have incite, a basic understanding of the subject, and a wiliness and the capacity to learn.  You've demonstrated you have none of the prerequisites.

Thermonuclear bomb uses fusion.

Thanks for the correction.  It's been many years since my last physics class.
5351  Other / Meta / Re: Report plagiarism (copy/pasting) here. Calling for Mod action: please permban on: November 06, 2018, 09:01:18 PM
User = Mahmoudraida

iqfinex_ another good exchange come in online market, First I think that! But after seeing their website, Project, desktop version, All details I believe this project go on another level within a short time. I think it's a matter of time now! I already visit their social media page and honestly, their team are so much active and give their best in this project. Today I open an account and start work in this platform. nice project

IQFinex Exchange - another good exchange come in online market, First I think that! But after seeing their website, Project, desktop version, All details I believe this project go on another level within a short time. I think it's a matter of time now! I already visit their social media page and honestly, their team are so much active and give their best in this project. Today I open an account and start work in this platform. Great Feature with good service.
5352  Other / Off-topic / Re: Flat Earth on: November 06, 2018, 08:50:52 PM
how about you prove it's a million mile wide thermonuclear bomb Einstein.

That would be impossible, because it's not a thermonuclear bomb (nuclear fission.)  Our sun, and all stars are powered by a nuclear fusion reaction.

Proving a concept to someone requires that individual to have incite, a basic understanding of the subject, and a wiliness and the capacity to learn.  You've demonstrated you have none of the prerequisites.
5353  Other / Politics & Society / Re: Supreme Court pick Brett Kavanaugh on: November 03, 2018, 11:37:51 PM
I think they were all made up.  Not one of his accusers had any credibility, in my opinion.
5354  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: November 01, 2018, 09:43:15 PM
it keeps changing its mind, prolly not you.

Morgan Stanley starts off the report by noting that bitcoin’s thesis has been “rapidly morphing”. It details the perceived change in narratives, which started as digital cash, moved to store of value, and is now an institutional investment class.

5355  Other / Beginners & Help / Re: [GUIDES] on Bitcointalk. Index thread (until there is a dedicated subforum?) on: October 31, 2018, 09:58:38 PM
I don't know if either of these threads fit your scope, but here are two that I wrote:


[GUIDE] Plagiarism and how to avoid it.
[GUIDE] Encoding Bip39 Seed Phrase to Hex Code
5356  Economy / Reputation / Re: Double posts - multiple accounts on: October 31, 2018, 08:20:57 PM
More baseless allegations from a left wing extremist?

Get a life, dude.
5357  Bitcoin / Development & Technical Discussion / Re: [GUIDE] Encoding Bip39 Seed Phrase to Hex Code on: October 30, 2018, 04:12:19 PM
Reserved.
5358  Bitcoin / Development & Technical Discussion / [GUIDE] Encoding Bip39 Seed Phrase to Hex Code on: October 30, 2018, 04:12:02 PM
Introduction

I recently decided to stamp my seed phrases onto stainless steel blanks for preservation.  I wanted to preserve and secure the seed phrases for multiple wallets, including the ones I've created for each of my children.  I didn't want to spend all day stamping letters into stainless, and for security purposes I didn't want the actual seed words stamped on the metal.  The spreadsheet I've created below gives me a tool to resolve both issues.  


Background

BIP39 Seed Phrases are utilized by many hardware, desktop, and mobile-app wallets and their respective software.  They are not only used for Bitcoin, but many other coins as well.  There are even some web wallets that utilize BIP39 seed phrases for backup and recovery.  The phrases are most often 12 words in a string, but can be longer.  The words, and the order in which they are generated is critical information and represents the core backup of an HD wallet, and all its Private Keys.  You'll need the seed phrase to restore the wallet in case the hardware on which it resides is lost, stolen, or otherwise compromised.  With the seed phrase you can restore the wallet onto multiple devices.  In the case of cold wallets you may choose to not have the private key reside on any electronic device.


The Issue

The seed words themselves may be several characters long, and may be in an order that is easy to remember.  From the practical perspective, I didn't want to spend a lot of time stamping hundreds of characters into steel.  While wanting to secure many wallets it was looking like I would have to dedicate a lot of time stamping seed phrases into the steel blanks.

The security issue of having the seed phrases stamped onto a piece of steel that some one might see was also something that concerned me.  Even with the steel locked in secure storage such as a safe, the potential for someone to see them does exist.  Someone with a quick eye and a keen memory could theoretically see the phrase and remember it, and then proceed to steal the funds.


Solution

It occurred to me that encoding the phrases could resolve both of my concerns.  I choose to use the numeric value of the list position of the BIP39 word and then encode the numeric value to HEX code format.  This method compresses the information to three characters per word, and by converting the seed phrase into a format that is not immediately recognizable to most, makes the character string harder to remember.  

Although this encoding method does not encrypt the information, it can be combined with encryption techniques for added security.  A simple or complex seed number shift can easily be added to the tool outlined below.  That will be covered by another post.


Build the Spreadsheet

Security

Since you will be typing your secret seed words into the spreadsheet, I suggest building the spreadsheet on an air-gapped computer, or one that you are 100% confident is not infected with a virus, malware, or a key-logger.  Your security is your responsibility, do not skimp.


Sheet 1; BIP39 Word List

Online Computer:
  • Browse to GitHub and download the Bip39 word list in your preferred language.
  • Copy the list onto a clean USB drive for transfer to the offline computer.

Offline Computer:
  • Start a spreadsheet, and name the first sheet "BIP39 Word List" (the name of this sheet is critical for the functionality of the formula.)
  • Copy the 2048 words from the word list you've chosen, and paste the words into a single column in the sheet titled "BIP39 Word List."




Sheet 2; Encoding

  • Create another sheet and name it "Encode" (the name of this sheet is not critical.)
  • In the first row, apply names to the columns as a reference (see example below.)
  • In my example I've named column A "Seed Words,"  and column B "Hex Code."
  • Type or paste your seed words into column A, typing one word per cell (see example below.)
  • Copy the formula code below and past it into cell B2.
  • Drag the formula down through all the cells you want to convert.

Code:
=DEC2HEX(MATCH(A2, 'BIP39 Word List'!$A:$A, 0)+ROW('BIP39 Word List'!$A:$A)-1, 3)




Sheet 3; Decoding

  • Create a third sheet and name it "Decode" (the name of this sheet is not critical.)
  • In the first row, apply names to the columns as a reference (see example below.)
  • In my example I've named column A "Hex Code,"  and column B "Seed Words."
  • Type or paste your Hex Code in column A, typing one code per cell (see example below.)
  • Copy the formula code below and past it into cell B2.
  • Drag the formula down through all the cells you want to convert.

Code:
=INDIRECT("'BIP39 Word List'!A"&HEX2DEC(A2)+0)




Spreadsheet Tool

I have made my sample spread sheet available for viewing and downloading.  Editing the spreadsheet has been disabled.  It has an unfunded TestNet seed phrase as an example.  I suggest you use the formulas above to build your own, and use it on an air-gapped device.  The Spreadsheet link is here, if you need to download it.


5359  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: October 30, 2018, 01:08:52 PM
Colour preference?

Any color you like as long as it's Sauron.   Grin

Thank you, sir.

 I didn't have a Sauron pencil crayon but I had beer.  Wink




Absolutely awesome!  Thank you.
5360  Other / Politics & Society / Re: Shoot The Shit About American Politics on: October 30, 2018, 01:32:06 AM
LOL invaded LOL the brown people are coming!!!!!!!!!!!

Do you know what domestic means?

This is gonna be sooooooooooo awesome!

I am "brown people."  Do you know what sovereignty means?

I am white people what does each of our race have to do with the price of horse shit in China?

Sovereignty, has someone declared war on the USA cause I missed that fucking memo...

You're the one who threw down the race card, I only replied appropriately.

War hasn't been declared, but an uninvited horde of thousands intent on abusing our system, or otherwise ignoring our borders, is an invasion.   You can paint it any way you like if you prefer alternate semantics.  You are also welcome to ignore the cost to, and effect on our society, the strain it puts on the middle class.  You can minimize the difficulty in vetting the horde for criminals and insane, and possibly terrorists.

You may also insist I have an obligation to pay higher taxes to account for the services the horde needs, and tolerate more crime once they've marched into my country. 

Or, you can choose to ignore the big picture all together, and just call me a racist.  That'll settle it.

Pages: « 1 ... 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 [268] 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!