Payment received as promised. Enjoy the games!

MLB 12 The Show, new in wrap, however there is a small cut on the back of the case over the barcode, suspect box cutter. - 0.6 BTC shipped anywhere in the US.

Uncharted: Golden Abyss, played for about 5 mins, mint condition - 0.6 BTC shipped anywhere in the US.

0.9 BTC shipped for both.

I think I have a very minor bug with regards to the home screen.  The QR code for address has the top and bottom clipped, like it is zoomed in too far for the small address area.  The full screen address QR code displays properly.  Anyone else have this problem?

BitcoinSpinner 0.7.3b
Android 2.3.6
Galaxy Note GT-N7000

I've seen double-spend analysis worked out by gurus on this forum.  The conclusion was that trying to execute a double-spend isn't economical for low value transactions.  I can't remember specifically, but the low end for it to POSSIBLY be profitable was something like $2k-$10k.

When your client/wallet service is well connected to the bitcoin network (like a blockchain.info wallet), transactions show up almost instantly.  The easy solution is to just accept zero confirmation transactions under a certain value (like in the $1k range), and require confirmations for higher values.  This could either be you or your payment processor, who may have insurance that would allow them to offer higher values for zero confirmation instant payment.

Another option is just to have a credit card that transacts in bitcoins instead of traditional currency.  Credit cards only need approval from their servers, so this would be instant just as it is today.

Checking in as requested!

How about this alternative, integrated solution:

*Buy cheap used android phone (or new phone if you wish)
*factory reset/flash ROM/etc.
*use wifi to download bitcoin spinner (no carrier service on this phone)
*use SD slot to backup wallet seed
*use camera to scan address from blockchain.info (nice air gap here, no need to even log onto website)
*only power on or turn wifi on when reloading spending wallet.
*phone only communicates with bitcoin spinner servers
*bitcoin spinner servers handle the blockchain

Not the most advanced solution, but VERY EASY TO USE.

^^Everything said above matches what I've heard.

I'll add that the generic open source ATI drivers included in Ubuntu 12.04 and Mint 13 are a huge step forward in performance and actually worked faster for me than the ATI developed proprietary drivers.  You might want to give that a shot if you intend to salvage your current setup (try it on a live CD first).  Unfortunately I can't comment on the dual monitor setup as I haven't tried that yet.

Really like #3 and #4, but I'll go with Psy's #4.

Practical consideration:  Should the "amount" line be visible when the private key is folded over?  It would be a shame to have a great looking note and then have to write the amount onto the folded back in white space.

For example, if the amount line was over the Load & Verify QR (where the equation currently is), it would be visible whether or not the private key was folded over.

I fully understand the idea of marketing on an emotional level, but using "magic" in relation to anything financial is only going to evoke the emotions of being scammed.  Financial magic = SCAM.  The emotional response we should be aiming for is something that builds trust or confidence.

As others have stated, bitcoin will likely sell itself on its economic merits as long as we don't scare people off.

I'm liking the basic slogans thrown around in this thread:

"Internet Cash"
"Digital Currency"

Some new ideas that fall more into the emotional-marketing category:

"Currency of the Future"
"Modern Money" (some variation on this that sounds much slicker)

That's because bitcoin as a system is very technical, and well thought out.  You don't need to know exactly how your bank is protecting your money, just that they have a good system.

A modern Toyota car is incredibly complex and technical, but people like them because of their reliability and durability.  Consumers like Toyota engineering and they feel safe with their products.  I even hear "German Engineering" as a desirable characteristic from people who can barely open the hood of their car.

Maybe "engineered" isn't exactly the right word to go with, but the slogan needs to set bitcoin apart and offer a high level description at the same time.  People need to know bitcoin isn't some short-sighted nerd-fad so they don't discount it right at the start.  We need people to take it seriously and think that it sounds trustworthy.

I see your creative sarcasm, and raise you a seriously considered slogan:

Engineered Digital Currency

Bitcoin isn't some lame internet fad/scam thing, it's ENGINEERED, and that's why you use it.  This gives mass-adopters an idea (and a feeling) about the design and technology behind bitcoin without making any brains hurt.

Great idea.  Casascius coins are awesome, but the minting premium is an issue for large scale use.

With bitcoin you are your own bank.  Now you can even withDRAW your own bitcash!


My .02BTC:

*If it has any colors, it should have BTC-orange on it in a fashion that looks good if printed in black and white.  I'm a big fan of the current standard logo and the "ubuntu" font, so these would be good.

*I think we should steer clear of putting people on it.  Even though we are talking about using scientists and engineers, the portrait theme has a government/central bank feel to it.  No portrait is simpler to print and fits with the "every-man" idea of bitcoin.

*Think outside the box, such as ShireSilver's idea below.  After all, we are re-inventing currency here!  If it wasn't for the size of govt cash, wallets could be a lot smaller.  I'm not necessarily against the full-size note, but that size does seem more fiat-fluff than utility. 

The comparison to email and VOIP was priceless.  That should help a lot of people understand the technological breakthrough that is happening. It might even help convince some of the "gold bug" types that think it isn't worth anything if you can't hold it in your hand.

Enter constructive criticism.  From the primer:


The "wallet" name rears its ugly head again, although in a roundabout way.  Aren't we talking about the "keys" needed to access a user's balance here?  The currency units are actually stored in the blockchain.  I know this is a small difference, and no doubt many believe it is better for general users to just "black-box it," but I think an accurate explanation will help even novice users. 

Example:  If they think they are storing the actual bitcoins on their computer or phone, users are less likely to grasp the value of backing up their wallet file (you can't backup a real wallet or physical currency).  If it is conveyed that their bitcoins are on the internet, and only their keys/passwords are local, they they might more readily take to the backup concept, and end up with a better overall grasp of bitcoin too!

I've been impressed with the orange logo as a sort of spontaneous-order success.  It is attractive and simple with only two colors and yet still very unique.  It is easy to print on stickers and shirts.  You can recognize it at great distance on a sign and also as a small icon on a computer or smartphone.  I can't think of any other common logos that it can be confused with.  The ubuntu font used for "bitcoin" in the long form meshes nicely with the unpretentious style of the orange logo and bitcoin as a whole.

I think the satoshi design is nice as well, but I see it as more of a dress-up, formal logo since it is more complicated and not as recognizable at a distance.  It is riding on the coattails of gold coinage, whereas the orange logo is its own person.

I think a complete redesign would be a bad idea at this point.  I'm also not sure any slight modification of the orange logo would be worth the investment, but hey, it's a free currency, so do what you want!

Ahhhh. I saw that, but thought it was copying the image to the clipboard.

Great app! IMO this is the only way to do a mobile wallet due to the size of the blockchain. The new black color is definitely more appealing than the old orange (too bright).

Feature request: when you click on your address it gives you a lot of options of where to send it, but none of them is 'copy to clipboard'

Layman's question:

Will the proposed new long bitcoin addresses be mandated for everyone going forward, or will the long addresses only be used by people who chose multi-sig?  I definitely share the concern over difficulty in copy-paste, QR codes, eye-scanning etc. due to really long addresses.

What kind of address length are we looking at with each of the proposals?

Here's what I've gathered from this thread:


Tycho/Deepbit - concerned about rushing such a big change, concerned about wielding decision power over such a big change

Gavin - concerned about wallet security and allowing bitcoin to move to the next level

Luke - concerned about wallet security and allowing bitcoin to move to the next level


All parties care about having a stable and successful future for bitcoin, and we should not forget that.  I think Tycho/Deepbit's refusal to get behind one of these proposals is quite possibly the wisest move in this whole ordeal and is under appreciated.  What it does is put this incredibly hot bitcoin drama on ice and buys more time for the engineers to debate and the community to form some sort of consensus, which is crucial for something this big.

Slow and steady wins the race (and usually results in it being done right the first time).

What you are describing are speculators: http://mises.org/daily/4466

Price stability depends largely on market size and history, and bitcoin doesn't have much of either yet.

Thanks for this explanation.  I had the same problem as the OP when I first started because I was experimenting sending between different wallets.  I did find the recommendation on doing a -rescan, but didn't get the whole explanation as to why switching wallets caused problems.

"bitcoins not showing up in wallet" <---(for the search engines)