If you're a trusted forum member (>200 posts) and deposit at http://britcoin.co.uk/ then PM me your deposit reference code and it will be verified immediately.

[20th September 2011: Britcoin has now migrated to Intersango, our new platform that has been in development for the last 3 months]

20th September 2011: Britcoin has now migrated to Intersango, our new platform that has been in development for the last 3 months

https://intersango.com/

For more information about the people behind the exchange, visit:

Company website: http://bitcoinconsultancy.com/
Personal biographies: https://intersango.com/about-us.php

For now it's being run very cautiously. Therefore I'm personally authorising all payments and transactions until I'm confident to switch on automation.

http://britcoin.co.uk/

You can find our sourcecode on Gitorious.

Hey,

I coded up http://bitcoin.cz.cc as an experiment but it mostly seems to have been ignored?

By putting bounties on each bug fix and feature, Gavin and the other bitcoin developers will be able to tell which features and bug fixes are most urgent. Each part of the project has it's own price! This pricing mechanism for FOSS projects is a radical improvement over the model of putting arbitrary priorities on bugs and features.

Why not add this to your signature if you're a dev?
##############
"Vote up your favourite ideas to go into Bitcoin"
##############

It's a small thing, but it goes a long way to us gathering data/finding out how to do things.

---------------------

You propose features for Bitcoin. The front page shows a mix of the most donated proposals (10) and newest ones (5). Once the feature is implemented in Bitcoin then the bounty goes to the author and the proposal is deleted.

Think of it as an experiment into future methods for bitcoin based free software dev. Right now I'm just putting it out there to see what happens. If it grows then we can think about turning it into a bug tracker type thing with tickets, comments, statuses, assignment of tickets and search.

As per this and this post, me & dissipate have setup a new site:

http://bitcoin.cz.cc

You propose features for Bitcoin. The front page shows a mix of the most donated proposals (10) and newest ones (5). Once the feature is implemented in Bitcoin then the bounty goes to the author and the proposal is deleted.

Think of it as an experiment into future methods for bitcoin based free software dev. Right now I'm just putting it out there to see what happens. If it grows then we can think about turning it into a bug tracker type thing with tickets, comments, statuses, assignment of tickets and search.

##############
For this to work, people have to know about it. Add it to your signatures!
"Vote up your favourite ideas to go into Bitcoin"
##############

Source code.

Is this a good setup to run 2+ bitcoin instances?

Each one is running under a separate user, so no need to set -datadir.

bitcoind -rpcport=8721 # this will be the master running as root
bitcoind -rpcport=8121 -connect=127.0.0.1 -nolisten  # slave 1
bitcoind -rpcport=8216 -connect=127.0.0.1 -nolisten  # slave 2

The above is for 2 users. They connect through the master node.

Am I missing anything?

Hey,

I'm looking for data and graphs so I can compare Bitcoin to other networks/supercomputers to show to laymans in visual terms how much more powerful our computing power is. It's a good argument in favour of Bitcoin's network rock hardiness.

Numbers comparing Bitcoin hashing rate to Protein@FOLDING and SETI are much welcome.

jgarzik says: ~5800 petaflops whereas F@H = 10 pflops.

Anyone can come to pixxxel on the 4th,

http://pixxxel.net/2011/03/bitcoin-digital-currency/

I'll be talking about Bitcoin there. There will be 4 people involved in Bitcoin at that conference.

Also if you're a business man that can pay the €2k entry fee then also on the 6th,

http://www.epcaconference.com/

--------------------------------
     http://PiXXXeL.net - made in Am★dam (and beyond…)

At PiXXXeL we focus on free and open source software practices, 360
degrees! and with direct participations of developers and pioneers
living around or, as in this case, passing by the city of Amsterdam.

More precisely you'll find us in Keizersgracht 264 at http://nimk.nl

This mail announces our 3rd appointment of a regular series we are
organizing during 2011 and this time we'll focus on... MONEY
an old media that needs a bit of an update - so free software
developers are busy on it and there is some interesting running code
to look at.

Bitcoin is a digital currency created in 2009, whose use online has
grown during 2010 and is booming just as we are talking.

     http://pixxxel.net/bitcoin-digital-currency

We'll have a presentation of this technology by an experienced nomadic
developer and bitcoin expert: Genjix - who is also a developer of free
software solutions based on Blender and Crystal Space.

Then we'll proceed with a Q&A session and a critical overview of the
limits and, arguably, things that can be made better in Bitcoin, as
well things that go wrong.

You are all invited to be with us and brainstorm openly, but please
register your presence with a mail to ilse@nimk.nl so that we can be
sure we'll accommodate everyone at NIMk.

Here some links to know more what we are talking about:

     http://www.bitcoin.org

     http://genjix.freehostia.com

     http://bitcoincharts.com/markets

     http://www.silkroadmarket.org

     http://DYNDY.net

--------------------------------

I've opened the source code + artwork to our exchange under GPL3

http://gitorious.org/intersango/master/trees/master

I'm also selling support contracts,

http://bitcointalk.org/index.php?topic=4576.0

Hopefully we can get some nice exchanges going.

Hey,

I'm working with a US company to open a UK exchange. The plan is to later add more currencies after gaining the required licenses.

http://britcoin.co.uk/findex.php  (site isn't public yet)

Per our agreement, all of the source code + artwork is free under the GPL3

http://gitorious.org/intersango/master/trees/master

To secure the site properly, I need to get vested interests involved. Therefore I'm selling a 1 month contract for setting up an exchange of your choice using a single currency. Hopefully we can expand this into a solid piece of exchange software.

You will need:
- Business bank account to accept deposits.
- Internet banking.
- LAMP VPS
- Ability to build Bitcoin from source (we run a modified version).

Here's what you get:
- Custom artwork.
- Integration with your bank account using scripts to parse the downloaded statements.
- Install + updates.
- 1 currency supported (for now).

Auction closes on Monday. I will only accept 1 contract for the time being. Another after 1 week if all goes well.

Payment is up front, but the 1 month starts from when you have everything needed ready. Anyone if free to setup their own exchange independent of us, but you lose the Q&A testing that we do.

Minimum bid: 400 BTC

I see a lot of questions about how to build Bitcoin.

Here's how you do it on Ubuntu for the non-GUI version:

sudo aptitude install build-essential libboost-all-dev libdb4.7++-dev libssl-dev libglib2.0-dev
make -f makefile.unix bitcoind
./bitcoind

(someone add this to the build instructions on github)

http://92.7.172.0/

Don't have a VPS for that around that I can use right now. Can someone please host this.

It's a site where you propose features for Bitcoin and donate. Once the feature is completed & confirmed, then it goes to the dev who wrote that feature.

It's an experiment into how future free software development could work.

Hey,

I've tried google but it's not turning up much. I'm looking for algorithms to match up and fulfill an orderbook.

A offers 20 GBP for 10 BTC
B offers 5 BTC for 9 GBP
C offers 2 BTC for 6 GBP

Looking above we can see that to fulfill A's order, we can use B but not C's order:

BTC per GBP for A = A_want / A_amount = 10 / 20 = 0.5
BTC per GBP for B = B_amount / B_want = 5 / 9 = 0.56

if B_amount / B_want >= A_want / A_amount
(rephrased to avoid float rounding errors)
if B_amount * A_amount >= B_want * A_want
then order is OK

So using B's rate to fulfill A's order gives A more BTC for his GBP's worth:

=> take B's order from A leaves:
A offers 11 GBP for 5.5 BTC at the original rate of 0.5  (A got a better deal than he was asking for but the rate he has chosen remains fixed).

Do the comparison for C we see that (2 * 11 = 22) < 6 * 5.5... Ergo C's order is invalid for A.

HOWEVER

This isn't optimal at all. It has two problems:
- The rate is fixed at what A has chosen.
- Doesn't find the best all round solution to fulfill an order for everybody.
I tried rephrasing it as a linear programming problem,

A offers 20 GBP for 10 BTC
B offers 5 BTC for 9 GBP

x = X / GBP
y = Y / BTC

Constraints:
x <= 20
y <= 5

y >= x * 10 / 20  (from A's order)
or y >= 0.5 x

x >= y * 9 / 5     (from B's order)
or y >= 0.56 x

I have to maximise x + y in the space between those 2 lines and the box from the first 2 constraints... However the problem becomes error prone fast- I can easily do bounds detection but am worried about bugs.

Implementation MUST be perfect. Therefore I'm asking if anybody knows any pre-existing systems, algorithms or code I can read.

I'm actually curious about this data. It'd be useful for people to know, so we can provide better services for each other.

My prediction:
A few 13-16 year olds, majority 20-25, large portion of ~30, and some 35-50 year olds.

20-25
~30
35-50
13-16

-

Hey,

Posted this yesterday but it hasn't got many views/replies... Looking for testing,

http://bitcointalk.org/index.php?topic=4353.0

./bitcoind send genjix@fishysnax.com 10

(thanks to mmarker for providing me with an SSH server for testing purposes)

- I plan to put in account locking after several wrong attempts (lock 30 mins after 5 wrong attempts).
- Password recovery is handled by the server admin- their own policies.
- I originally thought to update periodically with the name server but if you're generating a ton of keys then your wallet will get big very quickly... maybe it could update with the server everytime you generate a new key.

This was on the development roadmap, http://bitcointalk.org/index.php?topic=4170.msg60385
"design/implement a secure DNS-like "map string to bitcoin address" system  (so I can send bitcoins to "gavin@acm.org")"

https://github.com/genjix/bitcoin/tree/bitnom
(install libcurl-dev)

I've setup a test server at fishysnax.com

If you want to make an account then run:
bitcoind updatens yournickname@fishysnax.com yourpassword

That creates a new account if it doesn't yet exist. It also updates the stored address too everytime you run that.

You can change your password with:

bitcoind setnspassword yournickname@fishysnax.com yourpassword newpassword

And you can send me a tip with either:

bitcoind send genjix@fishysnax.com 10
bitcoind send 1GPBcN1wKSZ1L3FAQ1hpz9GGr1sPeAZgg8 10

(Spent all my BTC on new laptop after it broke... Still owe him 50 BTC

From https://github.com/bitcoin/bitcoin/pull/107

Following Ubuntu's method of distribution, here's how I think Bitcoin should be offered:

1) There should be 2 packages:
bitcoin-x.y.z
bitcoin64-x.y.z
(distributing 32 bit and 64 bit builds respectively)
2) For both of these packages, bitcoin is in the top level directory.
3) bitcoind is 'hidden' in a subdirectory (like bin)
4) The main page has 2 download links like:

Bitcoin for Linux (Recommended)
Bitcoin for Linux (64 bit)

The current structure is confusing for non-technical users. See http://bitcointalk.org/index.php?topic=3904.0 for the reason why.

An alternative proposal is in the first url at the start of this post.

Why are there 2 windows packages (zip and exe) btw?

today i visit about 2 sites (bitcoin & slashdot). mostly i search stuff i want. (there's enough out there for me to be choosy)

however when i use freenet, there's not many sites about so i have to click around... it gives me some idea of what it must've been like to 'surf the web' when there weren't many sites around on the net. (before my time)

when I'm without net, I get a disconnected feeling. Like I'm missing out on the chaos. Yet I grew up around all of this.

What must it have been like? The first time on the net, exposed to this new stimulus of being linked to others... Slowly rolling yourself across amateur sites... Surfing the crest of the web.

SYN

_

Why did they choose such a format?

Why not free a top level IP (e.g 200 as an example) and then whenever that byte is selected, you can have variable length fields:
200.num_of_bytes.89.123.42.76.43.108.2

Or change each each number field to a 64 bit int.

7843843.9084394.12333232.89

Therefore since some sites need IP addresses, ISPs and router manufacturers would lose out by not providing access to those addresses. ipv6 is ridiculous made by academics. Do they honestly believe the whole internet to upgrade to a non-backwards compatible address?