Bitcoin Forum
September 29, 2022, 03:05:11 PM *
News: Latest Bitcoin Core release: 23.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 [10] 11 12 13 14 15 »
181  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] EOS - Decentralize Everything on: July 28, 2017, 12:29:10 AM
Is anyone on this thread from EOS?

Their purchase agreement states:

Quote
7.15. Risk of Alternative Blockchains based on EOS.IO Software. The EOS.IO Software will not likely be licensed under an open source license until after the end of the EOS Distribution Period; however, it is possible somebody will not respect the EOS.IO Software copyright or will modify the EOS.IO Software after it has been released under an open source license. Therefore, it is possible for someone to utilize the EOS.IO Software to build and launch blockchain protocols using a token distribution other than the one intended for the EOS Tokens pursuant to the EOS.IO Software both prior to or after the EOS.IO Software has become licensed as open source.

If anyone can use the EOS.IO Software (under the open source license) to launch the blockchain using a token distribution other than the one purchased by thousands of buyers for over $200 million so far, then why wouldn't they?

Why wouldn't thousands of potentials users ignore and bypass the token sale and simply use the EOS blockchain for free?

182  Alternate cryptocurrencies / Altcoin Discussion / Re: Is any crypto truly scalable to a global scale? BTC, ETH, IOTA, DCR, PIVX...? on: June 30, 2017, 05:35:56 PM
11.  Most of the 3.0 tech being developed is really early stage (other than my own project Radix).  Theory mainly and little code hence the 18 month window.  I'm not even sure if they are announced publicly yet, just discussions I've had with people at events and meetups with ideas.  I'll check with the developers before I name them.

Am I correct to assume that your Radix is 3.0 and not early stage?

I noticed that you're going to have 500,000 transactions/second.  You rightfully pointed out the issues/limitation with side chains.  How do you plan to achieve 500,000 trx/sec?

EOS claims that they will process millions of transactions per second by doing parallel processing.  Parallel processing is difficult even when it is on a single computer.  It takes large teams of programmers to build this into an operating system.  I cannot see how it's easy or can be done on distributed nodes, especially by a small team at EOS.  Do you know if this is feasible?

183  Alternate cryptocurrencies / Altcoin Discussion / Re: EOS - Asynchronous Smart Contract Platform - (Dan Larimer of Bitshares/Steem) on: June 29, 2017, 04:39:55 PM
What is surprising is given the performance of Steem and Bitshares after their respective launches, people aren't learning their lessons. Or maybe they all are willing to hold out for the same periods. Can't say.

Are you saying the performances of Steem and Bitshares were poor?  How so?  Their market caps seem to be doing well.  Dan claims that the combined traffic/transactions of Steem and Bitshares surpasses Bitcoin and Ethereum.

What I'm really curious about is the ability to do parallel processing and processing millions of transactions per second.  Parallel processing on a single computer is difficult to do, even for Microsoft, which has thousands of programmers.  I would imagine that this would be an order of magnitude more difficult to do on distributed nodes.  This has never been done before.  It's not like emulating how UNIX did parallel processing into Windows.  I don't know how a small team can pull this off.  And there is no good explanation of how they can do this on the white paper.  Am I missing something here?

184  Alternate cryptocurrencies / Altcoin Discussion / Re: EOS - Asynchronous Smart Contract Platform - (Dan Larimer of Bitshares/Steem) on: June 28, 2017, 11:37:12 PM
I just read the white paper.

It does not provide a good technical explanation of how it will process in parallel and how it will process millions of transactions per second.

Does anyone understand how they will be able to do this?

185  Economy / Exchanges / Re: Is kraken.com a scam? on: June 06, 2017, 02:21:16 PM
Why does Kraken use a Japanese bank if they are based in San Francisco?

A couple of weeks ago, I wire transferred money to their Japanese bank.  Still have not heard anything from Kraken.  I submitted a ticket on their Support page a few days ago.  Still have not received a reply.

Do other people get this incredibly slow service from Kraken?  Has Kraken taken anyone's money from wire transfer and never credited the sender's account?

186  Alternate cryptocurrencies / Altcoin Discussion / Re: Coinbase's Securities Law Framework applied to every ICO on: May 27, 2017, 12:44:10 AM
iamnotback:

How would you score NEM?

Based on their description here:

https://forum.nem.io/t/not-claiming-nemstake-why-it-is-no-longer-possible-and-the-history-of-the-process/2859

it would seem that there was an "Investment of Money" and "Expectation of Profit" but I don't know about "Common Enterprise".
187  Bitcoin / Bitcoin Technical Support / Re: How to set up a secure offline savings wallet on: May 24, 2017, 12:37:43 PM
HCP:

Thanks!  That worked.
188  Bitcoin / Bitcoin Technical Support / Re: How to set up a secure offline savings wallet on: May 24, 2017, 12:40:40 AM
jackg:

I'm asking about the Master Public Key, not the Public Keys.

Let me try explaining the problem again, but this time with screen shots.

From Electrum's website (http://docs.electrum.org/en/latest/coldstorage.html), it has this instruction, which I was able to do:


Then it has these instructions:


However, I'm not able to follow the above steps.  When I run Electrum 2.8.2 on my Mac, I get the following pop-ups instead:



If I chose "Standard wallet", Electrum will provide me with a seed, prompt me for a password and create a new wallet.  This is not what I want, as I do not want another standard wallet.  I want a watching-only wallet.  So, I chose "Watch Bitcoin addresses", which brings up the following pop-up:


If I enter the Master Public Key (that I copied from the offline wallet), the "Next" button stays greyed-out and inactive.

If I enter the Public Keys (for receiving funds, which I copied as well from the offline wallet), the "Next" button activates and I can proceed.  Also, I know that I can check on blockchain.info for the balance and history of transactions for each particular Public Key.  However, I don't want the hassle of copying over Public Keys every time I use another one on the offline wallet.  I want the "watching-only" wallet to show all the transactions to all of the Public Keys from my offline wallet.  Isn't this what the Master Public Key is supposed to enable the watching-only wallet to do?

How can I create an online watching-only wallet with the offline wallet's Master Public Key?


189  Bitcoin / Bitcoin Technical Support / Re: How to set up a secure offline savings wallet on: May 23, 2017, 05:59:48 PM
As suggested, I booted up my Mac in offline mode with a bootable Mac OS USB stick.  I installed Electrum 2.8.2 and created the offline wallet.

As per http://docs.electrum.org/en/latest/coldstorage.html, I copied the Master Public Key from the offline wallet and restarted my Mac in online mode.  However, after that, I can no longer can follow the steps on Electrum's website.  Electrum's website states:

Quote
Create a watching-only version of your wallet
On your online machine, open up Electrum and select File -> New/Restore. Enter a name for the wallet and select “Restore a wallet or import keys”.

Then it shows a screen shot of a pop-up with the option of "Restore a wallet or import keys".  Then it says to "Paste your master public key in the box" and it shows a screen shot of a pop-up that says "Please enter a seed phrase, a master key, a list of Bitcoin addresses, or a list of private keys".

With my Electrum, it does not have the option of "Restore a wallet or import keys".  However, my Electrum has "Wallet type" options of "Standard wallet" and "Watch Bitcoin addresses".  If I choose "Standard wallet", Electrum will provide seed, prompt for password and create a new wallet, without enabling me to enter the Master Public Key.  If I choose "Watch Bitcoin addresses", it shows a pop-up that says:

Quote
Import Bitcoin Addresses

Enter a list of Bitcoin addresses.  This will create a watching-only wallet.

I pasted in my Master Public Key, but the "Next" button stays greyed-out and inactive. 

How can I create a watching-only wallet with the offline wallet's Master Public Key?


190  Bitcoin / Electrum / Re: How do I verify downloaded electrum using signature files? on: May 23, 2017, 12:34:20 PM
the same goes for Mac, i think it is called GateKeeper that is preventing installation of any app that it doesn't recognize.

Yes, the following message from my Mac is from GateKeeper:

Quote
“Electrum” can’t be opened because it is from an unidentified developer.

Your security preferences allow installation of only apps from the Mac App Store and identified developers.

“Electrum” is on the disk image “electrum-2.8.2.dmg”. Safari downloaded this disk image on May 20, 2017.

From Apple https://support.apple.com/en-ca/HT202491:

Quote
For apps that are downloaded from places other than the Mac App Store, developers can get a unique Developer ID from Apple and use it to digitally sign their apps. The Developer ID allows Gatekeeper to block apps created by malware developers and verify that apps haven't been tampered with since they were signed. If an app was developed by an unknown developer—one with no Developer ID—or tampered with, Gatekeeper can block the app from being installed.

I'm surprised that Electrum's developers would not have gotten a Developer ID from Apple and signed their app.

Should I ignore the GateKeeper message and install anyways ?

191  Bitcoin / Electrum / Re: How do I verify downloaded electrum using signature files? on: May 22, 2017, 10:18:34 PM
I didn't see any indication from GPG that it verified that the downloaded image was unchanged, in addition to being signed properly?  Did it verify that the downloaded image was unchanged?

I disconnected my Mac from the internet, booted up Mac OS from a bootable USB.

I tried to install electrum-2.8.2.dmg, but my Mac gave me the following message:

Quote
“Electrum” can’t be opened because it is from an unidentified developer.

Your security preferences allow installation of only apps from the Mac App Store and identified developers.

“Electrum” is on the disk image “electrum-2.8.2.dmg”. Safari downloaded this disk image on May 20, 2017.

Am I correct to assume that I can ignore this and go to Preferences > Security & Privacy > Allow apps downloaded from: Anywhere (or open anyway) ?
192  Bitcoin / Electrum / Re: How do I verify downloaded electrum using signature files? on: May 20, 2017, 08:05:35 PM
nerioseole:

Okay.  Does this mean that I verified that the downloaded image was unchanged, in addition to being signed properly?

What about all of the other steps mentioned by users xdigital and guitarplinker, such as:

Code:
gpg --keyserver pool.sks-keyservers.net --recv-keys 7F9470E6

Code:
gpg --fingerprint

Can I ignore them?

193  Bitcoin / Electrum / Re: How do I verify downloaded electrum using signature files? on: May 20, 2017, 07:00:20 PM
nerioseole:

Thanks for your help and suggestions.

I downloaded http://download.electrum.org/2.8.2/electrum-2.8.2.dmg.asc and renamed the file to electrum-2.8.2.dmg.asc.txt.

I installed GPG from gpgtools.org.  I de-selected GPGMail because I don't use Apple's Mail.  I ran GPG and got the following, which is different than what you got.

Code:
$ gpg --verify electrum-2.8.2.dmg.asc.txt electrum-2.8.2.dmg
gpg: Signature made Tue 21 Mar 13:42:38 2017 EDT using RSA key ID 7F9470E6
gpg: requesting key 7F9470E6 from hkps server hkps.pool.sks-keyservers.net
gpg: key 7F9470E6: public key "Thomas Voegtlin (https://electrum.org) <thomasv@electrum.org>" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
gpg: Good signature from "Thomas Voegtlin (https://electrum.org) <thomasv@electrum.org>" [unknown]
gpg:                 aka "ThomasV <thomasv1@gmx.de>" [unknown]
gpg:                 aka "Thomas Voegtlin <thomasv1@gmx.de>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 6694 D8DE 7BE8 EE56 31BE  D950 2BD5 824B 7F94 70E6
$

It seems that the verification failed.  What did I do wrong?

194  Bitcoin / Bitcoin Technical Support / Re: How to set up a secure offline savings wallet on: May 20, 2017, 01:59:44 PM
HCP:

Thanks for your reply and suggestions.

https://en.bitcoin.it/wiki/How_to_set_up_a_secure_offline_savings_wallet says to use the same physical machine to boot up Ubuntu in offline mode to create the offline wallet.  Is this okay, or do I need two physical "air gapped" machines?  Is it okay to boot up MacOS on the offline machine or is Ubuntu much more secure than MacOS?

You're right that Bitcoin Core doesn't sound "easy".  I guess the other disadvantage of Bitcoin Core is that every time I want to use the online Bitcoin Core, I have to wait for it to synchronize the blockchain.  I'll check out Electrum, but nothing seems to be completely easy.   I posted a question at https://bitcointalk.org/index.php?topic=1046484.new#new to ask how to verify the Electrum download and signatures on a Mac.

195  Bitcoin / Electrum / Re: How do I verify downloaded electrum using signature files? on: May 20, 2017, 01:54:50 PM

How do I verify the Electrum download and signatures on a Mac?

196  Bitcoin / Bitcoin Technical Support / Re: How to set up a secure offline savings wallet on: May 20, 2017, 12:55:34 AM
Thank you for your reply and suggestions.


Under "How to Retrieve Funds", it has these steps:

Quote
  • Run bitcoin client and close it again.
  • Replace wallet.dat in ~/.bitcoin directory with wallet.dat from USB drive.

Why do this?  Why not copy wallet.dat from USB onto ~/.bitcoin directory before launching Bitcoin Core?  That way, Bitcoin will use my wallet and not create a new one.
If you don't want to connect your ubuntu operating system to the internet at all then you should be fine just keeping your coins onto it.
I think if you're going to run another operating system as well then there are tools such as Microsoft's DISKPART.exe application that can extract data from any operating system that is installed on the computer (although this data should technically be encrypted with your login password - but it may not be very secure).

I'm not sure I understand what you mean by:  "If you don't want to connect your ubuntu operating system to the internet at all then you should be fine just keeping your coins onto it."  Bitcoin Core will create a new wallet.dat if one does not already exist in the default directory.  Those above steps are instructing me to "run Bitcoin Core and close it again", which will create a wallet.dat if one does not exist.  Then it tells me replace it with my wallet.dat from USB drive.  I don't understand why these steps are telling me to do this.  Why not copy wallet.dat from USB onto ~/.bitcoin directory before launching Bitcoin Core?  That way, Bitcoin will use my wallet and not create a new one.

I'm not sure I understand your suggestion about extracting data from the operating system.  Why do this?  Regardless, I cannot use "Microsoft's DISKPART.exe" because I have a Mac.

Is it better to create a bootable Ubuntu USB stick than a bootable MacOS USB stick?  In other words, is Ubuntu more bullet-proof than MacOS?


Step 5 states:

Quote
  • Connect to the internet.

If we do this, then how is this an "offline savings wallet"?

Do NOT connect to the internet until you want to retrieve your bitcoins. Doing so would be counter productive.

I do not plan on spending the bitcoins in this wallet for a while.  When I do need to spend, am I correct to assume that I will have to bite the bullet and run Bitcoin Core with wallet.dat in online mode and therefore risk the chance of getting hacked?

197  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Core & pruning mode on: May 18, 2017, 10:15:17 PM
I've already synchronized the block with prune=2096 in bitcoin.conf.  Can I simply change this to prune=550 and relaunch Bitcoin Core?  Will it reduce the block folder down to 550MiB?
Yes.

Will Bitcoin Core need to re-sync or validate the blockchain all over again (which will take 4-5 days)?
198  Bitcoin / Bitcoin Technical Support / Re: How to set up a secure offline savings wallet on: May 18, 2017, 10:13:34 PM
If you have a mac with ad card slot and a large fast sd card, you can install a clean Mac OS on this sd card, boot the mac when it's completely not connected to internet, then it serves the same purpose as off line wallet, and you don't need to mess up with Linux (if you are famalier with it).

Or consider a hardware wallet if the coins you want to protect are important.

I just bought two new Sandisk USB sticks to get ready to build a bootable Ubuntu USB.  I would much prefer to boot up Mac instead of Linux.  Thanks for the suggestion.  I have a SD slot.  What is the advantage of booting up from a SD card instead from a USB stick?

Under "How to Retrieve Funds", step 5 states:

Quote
Connect to the internet.

If I do this, then how is this an "offline savings wallet"?

I'm leery of hardware wallets because I don't think their source code is as open nor as widely reviewed as Bitcoin Core's source code.  Even if their source code is widely reviewed, how do you know that the hardware is running the same code?
199  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Core & pruning mode on: May 17, 2017, 08:44:49 PM
Just use the default prune size of 550. It is the smallest size but still provides sufficient protection against reorgs as it stores ~2 days worth of blocks.

I've already synchronized the block with prune=2096 in bitcoin.conf.  Can I simply change this to prune=550 and relaunch Bitcoin Core?  Will it reduce the block folder down to 550MiB?
200  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Core & pruning mode on: May 17, 2017, 08:03:34 PM
What are benefits of setting prune to be anything greater than 550, such as 551, 2000, 3000?
You will be storing more of the blockchain and thus be less likely to be affected by very large blockchain reorgs.

What are blockchain reorgs?

I want to use Bitcoin Core, but I would prefer to store as little of the blockchain as possible.  Is there an optimal size for the pruned block folder?

Pages: « 1 2 3 4 5 6 7 8 9 [10] 11 12 13 14 15 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!