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1101  Bitcoin / Project Development / Re: London Bitcoin Meetup on: September 18, 2011, 07:31:24 PM
Dam why does the security talk have to be on a sunday Sad I could only attend for the one day but would love to hear what Vladimir has to say on securing bitcoin !!

I could re-schedule it for the first day if you wish?

BTW why don't you give a talk on LinuxCoin? That's be interesting to know about. Smiley
1102  Bitcoin / Bitcoin Discussion / Re: Bitcoin and Natural Monopolies on: September 16, 2011, 11:42:30 PM
https://intersango.com/ vs http://mtgox.com/
every mining pool vs deepbit
https://bitcoin.org.uk/ vs bitcoinalk

see a pattern here?
1103  Bitcoin / Project Development / Re: UK exchange: Britcoin on: September 15, 2011, 05:37:47 PM
Migration to intersango.com

britcoin will be migrated to intersango.com on Sep 19th at 02:00 london time

More information: https://britcoin.co.uk/migration/
1104  Bitcoin / Project Development / London Bitcoin Meetup on: September 15, 2011, 01:25:30 PM
Hello all,

as indicated a few days ago we're planning a Bitcoin event at the London Hackspace on 24/25 Sept 2011. We already have an amazing roaster of contributions lined up. Everyone's quite excited about this event; there have been very few Bitcoin contributor meetings so far, even outside the UK. We'll try to record the talks and will make the videos public.

We're now ready to announce details.

It's a weekend of talks, discussions and workshops for Bitcoin contributors, domain experts from a wide range of fields, enthusiasts, and everyone curious about Bitcoin. This is a great chance for everyone to meet new people and learn new things.

We will discuss the code, the infrastructure, the community, the legal and political implications; we will look into the mechanisms of currency systems, security concerns of running Bitcoin infrastructure, and run workshops that show you how to participate.

As the Bitcoin community grew it has become harder to separate hype from fact, charlatans from helpful guides. We will attempt to bring clarity, and to critique the Bitcoin system and community with a sober attitude. Though it's also worth pointing out that any social experiment worth having requires a fair amount of anarchy, playfulness, and suspension of disbelief...

The event will happen over a weekend:

* Saturday, 24 Sept 2011 from 14:00-18:00 we will have talks and discussions.
* Sunday, 25 Sept 2011 from 14:00-18:00 we will have workshops.

Thanks to the London Hackspace the event itself is free to attend, however you need to register so we know how many people to expect. Make sure to register early; we will make an attempt at managing a waiting list should that become necessary. Attendance will be in the low dozens rather than hundreds, but (as you may know) the London Hackspace draws a passionate crowd of specialists and hackers of all kinds of interesting backgrounds.

Details and schedule: http://wiki.london.hackspace.org.uk/view/Project:Bitcoin/Bitcoin_Weekend_2011

Registration: https://bitcoinweekend.eventbrite.com/

A preview of the current schedule:

Features:
* Bitcoin cake
* Bitcoin live song performance
* Documentary showing
* Domain experts from a broad range of fields: IT infrastructure, open source software, law, economics, ...
* Talks, discussions, workshops

Saturday:

* Keynote and a technical talk by Amir Taaki
* "How bitcoin works" video by John Baker
* Information bazaar by Jamileh Taaki
* The Social Impact of Privacy for Life: Bitcoin and the Dual-Use Dilemma by Dr. Catherine Flick
* Mining talk by Vladimir Marchenko
* Legal talk by Jason Chia
* Economics talk by Gary Mulder, with a few economists from London School of Economics and Work Foundation in attendance
* Roundtable and discussions throughout the day

Sunday:

* Security talk by Vladimir Marchenko
* Practical Bitcoin workshop by Zarren Spry of LinuxCoin
* Developer workshop - use Bitcoin on a simple PHP website by Amir Taaki

1105  Bitcoin / Bitcoin Discussion / Re: A GIFT TO THE COMMUNITY on: September 14, 2011, 05:05:31 PM
http://vibanko.com/ is open source
1106  Bitcoin / Bitcoin Discussion / Re: "The Ethical Exchange" is Coming - Should General Bitcoin Users Trust It? on: September 14, 2011, 10:52:59 AM
Bitcoin Porn: you or anyone are free to find me on Freenode IRC in #bitcoinconsultancy or by my email, genjix@riseup.net
1107  Bitcoin / Bitcoin Discussion / Re: "The Ethical Exchange" is Coming - Should General Bitcoin Users Trust It? on: September 14, 2011, 10:46:24 AM
BitcoinMedia is an open outlet for people to post any topics. I try not to restrict the editors.

Nonetheless I had the same worries you did about that post and was waiting to speak to CoinMedia on IRC. Especially when members of my own group are pushing me to advertise our services then pointing to that post when I refuse. BitcoinMedia should really be an educational community site free from commercials.
1108  Other / Beginners & Help / Re: Is Intersango exper up to date? on: September 13, 2011, 04:35:31 PM
Hey!

Sorry I didn't see your PM because I don't go on the forums much.

exper is an experimental branch with a bunch of new (broken) features. The working branch for Britcoin is the gbp branch. We try to keep it up to date with master but sometimes odd things slip through.
1109  Bitcoin / Bitcoin Discussion / London Bitcoin Meetup on: September 13, 2011, 04:25:54 PM
Hello all,

as indicated a few days ago we're planning a Bitcoin event at the London Hackspace on 24/25 Sept 2011. We already have an amazing roaster of contributions lined up. Everyone's quite excited about this event; there have been very few Bitcoin contributor meetings so far, even outside the UK. We'll try to record the talks and will make the videos public.

We're now ready to announce details.

It's a weekend of talks, discussions and workshops for Bitcoin contributors, domain experts from a wide range of fields, enthusiasts, and everyone curious about Bitcoin. This is a great chance for everyone to meet new people and learn new things.

We will discuss the code, the infrastructure, the community, the legal and political implications; we will look into the mechanisms of currency systems, security concerns of running Bitcoin infrastructure, and run workshops that show you how to participate.

As the Bitcoin community grew it has become harder to separate hype from fact, charlatans from helpful guides. We will attempt to bring clarity, and to critique the Bitcoin system and community with a sober attitude. Though it's also worth pointing out that any social experiment worth having requires a fair amount of anarchy, playfulness, and suspension of disbelief...

The event will happen over a weekend:

* Saturday, 24 Sept 2011 from 14:00-18:00 we will have talks and discussions.
* Sunday, 25 Sept 2011 from 14:00-18:00 we will have workshops.

Thanks to the London Hackspace the event itself is free to attend, however you need to register so we know how many people to expect. Make sure to register early; we will make an attempt at managing a waiting list should that become necessary. Attendance will be in the low dozens rather than hundreds, but (as you may know) the London Hackspace draws a passionate crowd of specialists and hackers of all kinds of interesting backgrounds.

Details and schedule: http://wiki.london.hackspace.org.uk/view/Project:Bitcoin/Bitcoin_Weekend_2011

Registration: https://bitcoinweekend.eventbrite.com/

A preview of the current schedule:

Features:
* Bitcoin cake
* Bitcoin live song performance
* Documentary showing
* Domain experts from a broad range of fields: IT infrastructure, open source software, law, economics, ...
* Talks, discussions, workshops

Saturday:

* Keynote and a technical talk by Amir Taaki
* "How bitcoin works" video by John Baker
* Information bazaar by Jamileh Taaki
* The Social Impact of Privacy for Life: Bitcoin and the Dual-Use Dilemma by Dr. Catherine Flick
* Mining talk by Vladimir Marchenko
* Legal talk by Jason Chia
* Economics talk by Gary Mulder, with a few economists from London School of Economics and Work Foundation in attendance
* Roundtable and discussions throughout the day

Sunday:

* Security talk by Vladimir Marchenko
* Practical Bitcoin workshop by TBC
* Developer workshop - use Bitcoin on a simple PHP website by Amir Taaki

1110  Bitcoin / Bitcoin Discussion / Need BitcoinMedia contributors on: September 13, 2011, 04:09:18 PM
Hi!

Post your posterous accounts here and I'll give you contributor access on bitcoinmedia.com

Lets turn this into a community free style posting site. Lets have a free for all and see what cool things people make Smiley

Cya
1111  Alternate cryptocurrencies / Altcoin Discussion / Re: IxCoin is a SCAM on: August 20, 2011, 06:04:14 AM
I had a friend who heavily invested in IxCoin when it first came out, and I kept urging him to buy out ASAP... Nonetheless he has now lost cash.
Your friend gambled and lost and now you're upset at the casino? I'm sure people have done the same with bitcoin. Are you railing at the evilness of Satoshi too?

This was more like ponzi scheme than casino. Both require some degree of lying, but the former requires downright dishonesty.
1112  Bitcoin / Development & Technical Discussion / Re: Defense against 0/Unconfirmed double-spending on: August 20, 2011, 05:02:40 AM
this opens a can of worms. i could find the entire balance of a site if i can deposit/withdraw with 0 confirms by cycling all the keys in there wallet.

also you can replace transactions using the sequence invalidating your old tx.

not a good idea
1113  Bitcoin / Development & Technical Discussion / Re: Bitcoin network database dump in postgresql (download link inside) on: August 20, 2011, 04:49:11 AM
I just committed a postgres function to calculate difficulty:

Code:
DROP DOMAIN IF EXISTS target_type CASCADE;
CREATE DOMAIN target_type AS NUMERIC(68, 0) CHECK (VALUE <= 26959535291011309493156476344723991336010898738574164086137773096960 AND VALUE >= 0);

CREATE OR REPLACE FUNCTION extract_target(bits_head INT, bits_body INT) RETURNS target_type AS $$
    BEGIN
        RETURN bits_body * (2^(8*(CAST(bits_head AS target_type) - 3)));
    END;
$$ LANGUAGE plpgsql;

CREATE OR REPLACE FUNCTION difficulty(bits_head INT, bits_body INT) RETURNS target_type AS $$
    BEGIN
        RETURN extract_target(CAST(x'1d' AS INT), CAST(x'00ffff' AS INT)) / extract_target(bits_head, bits_body);
    END;
$$ LANGUAGE plpgsql;

So if you want to calculate the total difficulty of the block chain you can do:

SELECT SUM(difficulty(bits_head, bits_body)) FROM blocks WHERE depth IS NOT NULL;

Total blockchain difficulty is: 20077745448

You can play around with that syntax to select certain amounts of blocks:

SELECT SUM(difficulty(bits_head, bits_body)) FROM blocks WHERE depth > 400 AND depth <= 500;

.etc have fun
1114  Bitcoin / Project Development / Re: [ANNOUNCE] Abe 0.5: Open Source Block Explorer Knockoff on: August 20, 2011, 01:19:15 AM
I uploaded a postgresql dump of the database: https://bitcointalk.org/index.php?topic=38246.0
1115  Bitcoin / Wallet software / Re: libbitcoin on: August 20, 2011, 01:18:28 AM
No, don't worry. The conversation is informative. I have no problems if people want to talk about tangential topics here Grin

I uploaded a postgresql dump of the database: https://bitcointalk.org/index.php?topic=38246.0
1116  Bitcoin / Development & Technical Discussion / Re: Bitcoin network database dump in postgresql (download link inside) on: August 20, 2011, 01:17:51 AM
404, but that looks awesome

reload
1117  Bitcoin / Development & Technical Discussion / Bitcoin network database dump in postgresql (download link inside) on: August 20, 2011, 01:13:28 AM
Using libbitcoin's poller program, I've downloaded all of the bitcoin network database in postgresql for anyone interested.

Here is a dump of the bitcoin database (all blocks, transactions, scripts, ...): http://libbitcoin.org/bitcoin-sql.tar.bz2
1118  Alternate cryptocurrencies / Altcoin Discussion / Re: IxCoin is a SCAM on: August 20, 2011, 12:04:29 AM
Why would I advise you whether your patch is good or not when the evidence points towards it being a scam.

I had a friend who heavily invested in IxCoin when it first came out, and I kept urging him to buy out ASAP... Nonetheless he has now lost cash.

Good job scammer. Die in a grease fire.
1119  Bitcoin / Project Development / Re: [ANNOUNCE] Abe: Open Source Block Explorer Knockoff on: August 15, 2011, 05:17:55 PM
Thanks.

I'm disconnecting from the forums for a few days to focus. I can be contacted using my email on the front of bitcoin.org
1120  Bitcoin / Wallet software / Re: libbitcoin on: August 15, 2011, 05:16:59 PM
Thanks.

I'm disconnecting from the forums for a few days to focus. I can be contacted using my email on the front of bitcoin.org
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