Payment processing and automated withdrawal is working, here.  Well done.

Sure, I can do this.  But the supposition and suggestion were more general.

If bitcoins are to be successful, there needs to be a subscription system accessible to Aunt Tillie.

It has payment notification... nice.

Suggestion:  Derive the Pick 3 value from a well-known, independent source.

1) Download the posted-daily numbers from the US SEC's EDGAR service,

          ftp://ftp.sec.gov/edgar/daily-index/

2) Run the file through md5sum / sha1sum / sha256sum

3) Convert last few digits from hex to decimal.

4) Use last 3 digits from decimal value for Pick 3.

Large transaction rates are a key future bottleneck of the current bitcoin system.

IMO, the bitcoin client should have a subscription manager.

Ideally, bitcoin should be hashing in CPU cacheline-sized, cacheline-aligned chunks (usually 64 bytes).

Also, on modern CPUs, you can issue a "pre-fetch" like this

     while (have bytes)
          pre-fetch(index + 1)
          sha256(index)

which will potentially speed up the operation.

Both Linux and Windows compilers can generate prefetches.  gcc provides builtins for this.

Well, more like, you trust the bitcoin network.  For everyday currency transactions (buying and selling), some level of human trust is almost always involved.  You trust that a business will likely give you a service, in exchange for giving them money.

More than just an image...

Even though the bitcoin network itself handles fundamental transaction processing, web shopping carts will need additional amounts of payment processing to match purchases to incoming payments, be notified when a payment is processed (currently bitcoin purchase can take multiple hours to be confirmed), though order fulfillment and completion.

Even a simple "donate" button will require some sort of payment processing gadgetry a la Paypal's web button engine, if you want people to provide names and/or messages along with their donation.

It's tempting to code up a button engine myself, actually...

Something eventually relevant to bitcoin and Pecunix?

http://abcnews.go.com/Business/gold-coin-dealers-decry-tax-law/story?id=11211611

Starting Jan. 1, 2012, Form 1099s will become a means of reporting to the Internal Revenue Service the purchases of all goods and services by small businesses and self-employed people that exceed $600 during a calendar year. Precious metals such as coins and bullion fall into this category and coin dealers have been among those most rankled by the change.

This provision, intended to mine what the IRS deems a vast reservoir of uncollected income tax, was included in the health care legislation ostensibly as a way to pay for it. The tax code tweak is expected to raise $17 billion over the next 10 years, according to the Joint Committee on Taxation.