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1  Alternate cryptocurrencies / Altcoin Discussion / Re: Bitcoin Gold (BTG) on: November 18, 2017, 04:17:13 AM
Ledger's first unsuccessful attempt to provide a BTG wallet suggested a tx fee of a couple dollars to send BTG.  Their revised BTG wallet (chrome app) suggested a tx fee of one penny to send the same amount of BTG.  Does anyone know how to estimate a reasonable fee to send BTG?
2  Alternate cryptocurrencies / Announcements (Altcoins) / Re: BYTEBALL: Totally new consensus algorithm + private untraceable payments on: October 29, 2017, 01:05:18 AM
This is not a Byteball issue.  It is a SegWit issue.  Currently there is no standard message signing algorithm for SegWit addresses so you cannot sign a message using a SegWit address.

Thanks.  I am surprised because my wallet allows me to sign messages using SegWit addresses.

Anybody know of any Bitcoin wallets that support SegWit and have "coin control" features (i.e., the ability to freeze addresses or send BTC from specific addresses)?
3  Alternate cryptocurrencies / Announcements (Altcoins) / Re: BYTEBALL: Totally new consensus algorithm + private untraceable payments on: October 28, 2017, 08:10:00 PM
I would like to participate in the upcoming Byteball distribution by signing messages with my Ledge Nano S chrome wallet, but ran into a problem.  When I enter my BTC address in the Byteball Transition Bot, it responds "Only P2PKH addresses are supported."  Is this because my BTC is in SegWit addresses? 

I have not updated to the latest version of the Byteball wallet; does it support SegWit addresses?
4  Bitcoin / Electrum / Re: ETA for Electrum 3.0 with SegWit? on: October 27, 2017, 09:11:10 PM

You can actually build Electrum from the source yourself with the last commits, since AFAIK Segwit is already somehow usable. But I wouldn't recommend. Just follow the GitHub repo[1] README.

[1] https://github.com/spesmilo/electrum

On that page under "Development version", I found the following series of what I believe to be Linux commands:

git clone git://github.com/spesmilo/electrum.git
cd electrum
python3 setup.py install
sudo apt-get install pyqt5-dev-tools
pyrcc5 icons.qrc -o gui/qt/icons_rc.py
sudo apt-get install protobuf-compiler
protoc --proto_path=lib/ --python_out=lib/ lib/paymentrequest.proto
sudo apt-get install python-pycurl gettext
./contrib/make_locale

If I create an Electrum folder in the persistent storage of my Tails USB, open a terminal in that folder, and enter those commands, will I theoretically end up with a functioning copy of Electrum v.3?
5  Bitcoin / Electrum / Re: ETA for Electrum 3.0 with SegWit? on: October 27, 2017, 07:14:07 PM
Are you suggesting I run a Core node on Linux because it offers coin control?  I'm afraid I lack the resources and expertise for that.  I can send BTC with the Ledger software wallet but it would mean sacrificing privacy (my main concern) and paying higher tx fees due to the lack of coin control (their software does not try to minimize tx inputs to reduce fees).

Is there any way I can get in on the testing of Electrum v3?
6  Bitcoin / Electrum / ETA for Electrum 3.0 with SegWit? on: October 27, 2017, 05:16:51 PM
On October 15, Electrum tweeted that 3.0 "took longer than expected, but we are ready now."  Anyone know why it hasn't been released?  Is there a new ETA?

I made the mistake of transferring my BTC to segwit addresses on my Ledger Nano, thinking that Electrum would soon support segwit and provide the coin control features that I need (e.g., being able to send BTC from a specific address). 
Are there any other wallets that have segwit, coin control, and Ledger Nano support?
7  Bitcoin / Electrum / Re: Trouble with Replace-By-Fee Option on: August 23, 2017, 04:04:06 AM
Thanks.  I'm too paranoid about exposing my private keys to hackers to start messing around with stuff I don't fully understand.

Has anyone been able to use Electrum's "replace by fee" feature with a Ledger Nano?
8  Bitcoin / Electrum / Re: Trouble with Replace-By-Fee Option on: August 23, 2017, 03:00:23 AM
I discovered another place to try entering the commands shown on the Electrum support page:  the "Console" window of the Electrum program.   So I saved the unsigned tx file in the same folder in which the Electrum program was installed and I copied-and-pasted the "cat unsigned.txn | electrum signtransaction - > signed.txn" command into the console window.   It responded "SyntaxError: invalid syntax."   

Was that the right place to enter the command?
9  Bitcoin / Electrum / Re: Trouble with Replace-By-Fee Option on: August 23, 2017, 02:34:08 AM
Try signing the transaction using the command line or another wallet.  For the command line check how at http://docs.electrum.org/en/latest/coldstorage_cmdline.html

Those instructions are a bit over my head.  

Are you sure it is possible to sign the transaction using the command line when the private keys are stored in a Ledger Nano?

Edit:  When I tried entering "cat unsigned.txn | electrum signtransaction - > signed.txn" in the Windows Command Prompt window, it did not recognize "cat" as a command.  Is there some other place where the command should be entered?
10  Bitcoin / Electrum / Trouble with Replace-By-Fee Option on: August 23, 2017, 01:05:21 AM
I sent my last transaction with a low fee and the "replace by fee" option enabled, just to give it a try. Now when I right click the unconfirmed tx in the History tab and select "Increase fee", it gives me the option to set a higher fee. But when I try to sign the new transaction, I get an error message that looks like this: http://imgur.com/a/O1vyD

Should this feature work when using Electrum with a hardware wallet? I did not click the "Final" checkbox after setting the higher fee; is that required? I'd welcome any help!

EDIT:  Might the error have anything to do with the original transaction only having one output?
11  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN] Bitcore - BTX - SEGWIT - BLOOM - ONLINE - CORE 0.14.1 -142000+ BTX Claimed on: July 31, 2017, 02:28:55 AM
I'd appreciate some help installing the Linux version of the BitCore wallet.   I'm new to Linux but managed to create a bootable USB drive that runs TAILS which I hope will enable me to operate crypto software wallets more securely.  I downloaded the Linux-0-14-1-6.tar.gz file and opened it, which appears to have extracted two folders of files:  "bin" and "source".  The "source" folder contained a .zip file which I also extracted.  However, I do not know how to actually install and run the program.  [I tried to run the bitcore-qt file but nothing happened.]   What is the next step?
12  Bitcoin / Bitcoin Discussion / Re: Things you didn't get when you first came to Bitcoin. on: February 19, 2017, 09:35:58 AM
Regarding the behavior of bitcoiners, I was surprised by the number of folks who are willing to "invest" in obvious bitcoin-based ponzi schemes.

I am also surprised by the hatred of some bitcoiners toward Coinbase, which I believe provides a valuable on-ramp for newbies who may lack the knowledge and confidence to otherwise acquire and securely store bitcoin.
13  Bitcoin / Bitcoin Discussion / Re: Betting on Whether the Winklevoss ETF will be Approved on: February 19, 2017, 09:19:28 AM
I was not asking to bet with someone directly.  I'm also not spamming betmoose.  It just happens to be the only way that I know and understand to bet on this SEC decision.  I am actually seeking alternatives to Betmoose that would enable me to place a larger bet.  
14  Bitcoin / Bitcoin Discussion / Betting on Whether the Winklevoss ETF will be Approved on: February 19, 2017, 09:02:19 AM
As a hedge, I'd like to bet a couple bitcoins against the ETF being approved (hoping to lose the bet).   I read that BitMex is offering a "prediction contract" for this purpose, but I don't really know how that works.  I'm also aware that they do not accept American customers (I'm American).   If I wanted to bet on this contract, could I connect via TOR and deposit bitcoin without providing any identifying information?   If so, how does this contract work?   Does it provide fixed odds or does the payout vary depending on how people bet?  Is their a fixed house vig or does that vary as well?

I also discovered it is possible to bet on the SEC decision at betmoose.com, which is an innovative peer-to-peer wagering site. I like how easy it is to place bets with bitcoin; you don't even have to register. You can send bitcoin anonymously and if you win, they'll send your winnings back to the same BTC address (or another BTC address of your choice).   Due to the "Parimutuel" nature of the wager, however, I cannot bet nearly as much as I would like without dramatically changing the odds (against me). Therefore, I'd encourage anyone who wants to bet that the Winkletwins's ETF will be approved to check it out. I'll improve your odds by increasing my "No" wager!

I also read that you can bet on the ETF decision at "OpenLedger", which purports to be a "decentralized conglomerate ecosystem."  Can anyone explain what that is, and how it enables one to bet on the ETF approval?  

Any other good options for betting on whether the ETF will be approved?
15  Bitcoin / Hardware wallets / Re: Hardware Wallets and the Ledger Nano App on: November 09, 2016, 09:33:53 PM

The Ledger Nano S can be restored from seed directly input on the device itself. That means there is no possibility of malware stealing your seed if you have to restore your wallet. The Nano S also stores private keys for Ether and Ether Classic, as well as Litecoin. It can be used for secure login on U2F sites like Google and Dropbox. More coins will probably be added. Nano S is just a giant step forward from the Nano so why save a few bucks. Get the better wallet. Your money your decision.

I don't anticipate owning enough altcoins to worry about storing them in a hard wallet, and I do not want to use my USB bitcoin wallet to login to websites.   You make a good point about restoring the wallet from seed.  The Nano would require using a safe or air-gapped computer which is less convenient.   Nevertheless, the Nano seems more secure to me if initialized on a safe computer...and if their Android app works well.
16  Bitcoin / Hardware wallets / Re: Hardware Wallets and the Ledger Nano App on: November 09, 2016, 06:57:20 PM

You can still buy a Ledger Nano (original design) that required the security card. The new Nano S does not and is a better wallet in all respects, also works with Mycelium on Android. The Nano S is twice the price of the Nano about $64 and worth it.

I expect to use a hardware wallet for long term storage, making very infrequent send transactions.  [I will maintain a separate less secure hot wallet containing much less BTC for spending.]   With the Ledger Nano, I can keep the "security card" in my safe deposit box (and perhaps a hidden version on my computer) so that if a robber obtains my Ledger Nano and my PIN, he still cannot get my bitcoins.  Why is this inferior to the Trezor or Nano S?
17  Bitcoin / Hardware wallets / Hardware Wallets and the Ledger Nano App on: November 09, 2016, 01:26:38 PM
I've decided to buy a hardware wallet and have been comparing the Ledger Nano to the Trezor and the "Nano S."   It appears that in order to access your bitcoin, the Trezor and the Nano S only require that you have possession of their device and a four-digit PIN.  I like that the Ledger Nano has the additional requirement that you have possession of their "security card" or their smartphone app which has been paired to your device using the security card.  

I understand that the Ledger "security card" is theoretically vulnerable to keylogging malware when dozens of send transactions are made from one infected computer.  Does their smartphone app address this vulnerability well?  Is the app reliable on Android phones?  
18  Economy / Trading Discussion / Re: Live trading has started on xBTCe.com on: October 30, 2016, 04:24:06 AM
Are the fees the same as BTCe to deposit USD (from America), trade for BTC, and withdraw BTC?
19  Other / Off-topic / Re: How would you help with bitcoin? on: October 30, 2016, 04:08:47 AM
I would give money to a bitcoin political lobbying group so they can bribe politicians to defeat regulations that would harm bitcoin.

This is not going to help bitcoin either, you are putting bitcoin into hot issue by that way. It is better if you are just going to fund some good projects with bitcoin.

Let those politician do their own job because they don't even know what bitcoin is. You are just introducing bitcoin in danger by that way.

Why not donate those bitcoin of yours to some non-gov't orgs that helps peoplo to be educated with bitcoin.

If bitcoin begins to substantially threaten the profits of the big banks (or government tax revenues), politicians will hear plenty about the "danger" of bitcoin.
20  Other / Off-topic / Re: How would you help with bitcoin? on: October 27, 2016, 12:31:47 PM
I would give money to a bitcoin political lobbying group so they can bribe politicians to defeat regulations that would harm bitcoin.
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