Still looking to sell?

JW thanks for that informative post.

Where is your shop located?  Are you willing to do "in-person" deals buying and selling?

Thanks again.

I worry about the Bitmit escrow system.  Aren't you worried that you'll send silver but the recipient will say they didn't get it, so Bitmit refuses to release your coins?

r4vzvnj9NX37zYhKQC7vz54dB5c9SB2Dqd

For 1 BTC you could almost have a French Franc (gold rooster)..0.1867 oz of Gold

https://store.nwtmint.com/product_details/2415/French_20_Franc_Gold_Rooster/

Wait long enough and you'll have a 1 oz Maple Leaf for 1 BTC!

Still selling five British Gold Sovereigns.  These are bullion coins with 0.235420 troy oz of gold per coin.  I want $395 per coin, in BTC, which is about $20 over spot.  I'm looking for $10 shipping per coin, negotiable if you know a cheaper way to ship insured besides USPS Priority.  USA only please.

These coins are hard to find but a good way to get a smaller amount of gold.  You'd have to pay at least $400 fiat per coin 10 or more http://bullion.nwtmint.com/gold_sovereigns.php as an example.

BIN on Ebay is at least $410, and that's fiat.



I have dates 1882-1966.

I have other gold and silver coins but wanted to test the waters with smaller denominations to build a reputation here.  I am serious, please PM me if interested.

Mike

I am offering five British Sovereigns.  Each coin has 0.235420 troy oz of pure gold.  Dates are random between 1880 and 1960.  Condition is good.

I am looking for BTC equivalent of $395 plus $10 shipping, assuming the price of gold doesn't change too much. 

PM me if interested.

I only know how to ship and insure to US.  If you are in UK/Europe I'm willing to learn how to ship to you.

Regards,
Mike

I can sell you BTC in exchange for physical gold, sovereigns for example.  You would have to send insured to US, PM me if interested.

Mike

Would you buy silver for bitcoin?  Why are you interested in trading gold for silver?

How much more does Amagi charge for BTC transactions vs USD?  They are marking up a Krugerrand about $86 over spot, which is a little steep, but is there a further markup for using bitcoin to pay?

I have had this same problem, and it was a costly one.  It's not really a "feature."  Electrum generates new change addresses when you send money from an imported private key, and these change addresses do not correspond to the imported private key.  I think this is a dangerous unpredictable behavior that needs to get removed from a future version.  At very least, users should be warned when they send money from an imported address not to expect the change to hit that same imported address.  The advice to save all seeds is pointless because it defeats the whole purpose of using a brainwallet--what good is a brainwallet if you have lots of seed files on every machine you touch?

You realize if you are successful you could brute force ANY BTC wallet whether you had legitimate claim to it or not.

In other words, bitcoin would be essentially dead, since you could take from any arbitrary wallet.  You would start with the biggest ones, of course, and eventually word would get out, and bitcoin would be officially dead.

So far, since the 2009 release of the bitcoin protocol, nobody has hacked an arbitrary wallet.  This is presumably not for lack of trying.

I would, to quote Justin Bieber, "Never say never," but if you want a way to open a wallet, you might be brute forcing for a long, long time.

The idea is to use Electrum on a thumb drive with offline addresses.  You could use a random computer, run electrum, import the key, pay someone, then log off and wipe the electrum.dat file.  The point is to not need to record seeds between uses--nothing is stored on the host computer, only my thumb drive.  I don't want to leave forgotten .dat files everywhere I go.  I guess you could put the .dat file in the same directory as the electrum executable, but the program now leaves them in C:\Users\Mike\AppData\Local\Electrum, which is too easy to forget to clean.

This is a brainwallet idea, in which you only need to remember your TrueCrypt password to decrypt a thumbdrive partition.  Sure I know Electrum uses a brainwallet idea too, but I want to remember "my" brainwallet password, not one defined by the program.

To me, single-use Electrum with encrypted private key file is the simplest way to pay someone with Bitcoin.  It's pretty easy to encrypt a thumb drive using TrueCrypt to store the keys as a plaintext file.  I would prefer this over even an electrum.dat file.

I don't think I trust a cell phone with private keys.  If I lose the phone, I lose control over the keys.  Also, I use an old Palm Pixi that can't run an Android app.  Also, can't hackers somehow get into my phone and try to steal my keys?  A phone as a mobile payment platform is a hotwallet.  If newspapers in London can hack cellphones, can't Bitcoin hackers?

So I still beg you (and I appreciate you responding to my post) to consider updating Electrum to avoid this change-wallet problem.  If a user imports a private key, BTC-change should go to addresses under that private key.

Regards,
Mike

If everyone agrees, I guess that's what could happen--it's just software, right?  Currencies re-value all the time.

It's like the final scene in Men In Black, where they zoom out and the whole universe is just a marble for aliens to play with on a beach.  That's what BTC could become over and over.

All? Everyone? Even the last satoshi? Unlikely. If only 1 satoshi survive? Then it will be divided between everyone. That's the beauty of digital things
[/quote]

Thanks for the thoughtful response...I agree even one satoshi would still have value, but one satoshi worth $200 million isn't all that useful, IMHO.

Be warned, if you're not careful, a brainwallet setup of Electrum can eat your BTC.

The idea is to store private keys on a thumb drive, encrypted with TrueCrypt.  Ya with me so far?

Run standalone Electrum to do a transaction.  Import the private key.  Pretty straightforward so far.

Sent BTC to ***.  There were 9.5 BTC linked to that private key.  Sent 0.5 BTC. 

Electrum made a change wallet that I THOUGHT was linked to the original private key.  It turns out the change wallet is probably linked to the "seed" of the Electrum wallet that it makes when you start a new electrum.dat file.

I then deleted electrum.dat on that computer because, you know, hackers.  Of course that electrum.dat file had the seed for that new change address.

So you can see what happens next (perhaps there are a few people who understand where this is going): I got home and checked the Armory wallet, which now showed a zero balance. WTF!   Where did the BTC go?

Well, check blockchain.info and there they are, in a new address, private key unknown.

Please, Mr. Electrum, whoever you are (Dr. Electrum?) consider the following:
1.  Disable change wallets by default
2.  Allow users to start the standalone proggie by EITHER creating a new wallet in Electrum OR importing an existing private key.
3.  Linking change wallets to the imported private key instead of the Electrum wallet if there is an imported key, or at least give us the option.  Armory is more careful about that, and I think intuitively I assumed (incorrectly it turns out) that Electrum would be the same.

The program works pretty well, but if you intend to use it on an offline thumb drive, you had better be careful about where your change goes. 

I learned an expensive lesson: transactions, even small ones, are not trivial and involves potentially all the dough linked to that private key.

So now that my change wallet is "dead" I wonder what happens when all 21 million BTC succumb to a similar kind of entropy?  Sooner or later, missing private keys will affect lots of BTC, perhaps all of them.  At least with cash, it's a zero-sum game, someone loses $100 on the street, someone else picks it up and uses it.  In this case, the loss is more analogous to a pile of bills catching on fire.

Great, can't wait to send my hard-earned fiat there!

The site's been down all day.  Are they still dealing with ddos?  Bitinstant wants you to use them, but I worry about the site not being available.  Now that bitinstant removed the option for direct coins to address, will probably have to use mtgox..

+1

No more sending BTC directly to a wallet?  Why?