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1  Bitcoin / Bitcoin Discussion / Payment methods database for P2P Bitcoin exchanges on: May 13, 2015, 01:34:49 PM
We would like to ask the community to help us to build up a database for payment methods suited for P2P Bitcoin exchanges (like Bitsquare but it should be valuable information for others as well).
We started collecting information and laid out a template with the most important criteria used to decide if a particular payment method will be supported in Bitsquare.

Here is an overview spreadsheet and a document with more detail information.

Bitsquare is designed as a global exchange and as a community project, so we hope we get enough support to build up that database also for payment methods outside of the regions where we have experience (specially China).

Security is the most important criteria, so especially the risk for bank charge-backs needs to be investigated very profoundly.
We will use TLSNotary (a cryptographic proof of a https webpage) as primary verification tool in case of disputes, so payment methods where we can use TSLNotary will be preferred (proof of the Fiat transaction is visible on a https webpage - so mobile solutions where there is a webpage with payment history is fine as well).

We want to keep that forum as the primary discussion platform for collecting information and then give selective write access to the spreadsheet and document for contributors who provide quality input.

Thanks in advance!
The Bitsquare team
2  Economy / Exchanges / bitsquare.io - The P2P Fiat-Bitcoin Exchange on: June 10, 2014, 08:27:41 PM


A few months ago, I started working on a P2P Fiat-Bitcoin exchange project (initially called BANK RUN!).

After a few iterations and refinements of the concept I created a proof of concept prototype demonstrating that the basic use cases are working both from a technical point of view as well as from usability.
The project uses Java8/JavaFX with the BitcoinJ library and TomP2P as messaging/DHT solution.

At the moment, we are two developers working fulltime on the project; currently, we are discussing and setting up a funding model.

We are still looking for more developers to join, especially people with experience in P2P networking.
If you feel like contributing, please drop us a line at team@bitsquare.io or join us at our IRC channel @freenode #bitsquare.io.

Here are the main points of the bitsquare project:
  • Pure P2P, cannot get shut down by a central authority
  • Fiat money will be transferred from one users bank account to the others bank account without any intermediary party
  • Open source, open communication, open development, continuous deployment
  • Arbitrator system as primary protection mechanism
  • Collateral as additional incentive for fair behavior
  • Contract holds all trade details and signed by both traders helps in case of disputes
  • Account registration with a fee and blinded bank account details attached makes sock puppet accounts more expensive and difficult
  • Fraud reports as protection against bank charge-backs and crime (stolen bank accounts)
  • Fees as protection against fake orders and spam
  • At least for the first phase there will be a limit for the trade volume, to limit the risk exposure
  • Compliant with the legal framework (at least as long Bitcoin is legal)

For more information, please check out these resources:
Webpage: https://bitsquare.io
The source code at Github: https://github.com/bitsquare/bitsquare
Whitepaper: https://bitsquare.io/whitepaper.pdf
Graphical overview: https://bitsquare.io/overview.png
Videos: https://vimeo.com/getbitsquare

Payment protocol diagram: https://bitsquare.io/payment_protocol.png
Risk analysis: https://bitsquare.io/risk_analysis.pdf
Arbitrator system: https://bitsquare.io/arbitration_system.pdf

Old bitcointalk thread (BANK RUN!): https://bitcointalk.org/index.php?topic=462236
3  Bitcoin / Development & Technical Discussion / Bounty for successful attacks of the BANK RUN protocol on: February 19, 2014, 04:34:34 PM
I ask for security audits/attacks.

Details see here:
https://bitcointalk.org/index.php?topic=462236.msg5239335#msg5239335

You can win 0.11 BTC if you succeed.

br,
Manfred
4  Bitcoin / Project Development / Bounty for successful attacks of the BANK RUN protocol on: February 19, 2014, 04:33:54 PM
I ask for security audits/attacks.

Details see here:
https://bitcointalk.org/index.php?topic=462236.msg5239335#msg5239335

You can win 0.11 BTC if you succeed.

br,
Manfred
5  Other / Archival / BANK RUN! - P2P Fiat-Bitcoin Exchange on: February 15, 2014, 04:08:25 PM
Hallo,

Sorry I don't speak russian, but I thought that topic could be interesting for russian BTC traders:
It is about a pure P2P Fiat-BTC exchange.
Would be great to get some information about the current situation in Russia.
Is BTC illegal right now or is it just not considered as legal money? Is the situation legally clear?

Here is the discussion thread:
https://bitcointalk.org/index.php?topic=462236.0
6  Bitcoin / Project Development / Project development - BANK RUN! on: February 14, 2014, 04:17:46 PM
This is the open project development thread for the BANK RUN! project and it is not intended for discussion or questions regarding the project. Please use the existing dedicated thread for that (https://bitcointalk.org/index.php?topic=462236.0).

Anybody who wants to participate to the project (development, concept, legal advice, design, funding,) is welcome to join.
It is intended as an open and transparent channel, but will be protected against misuse (We will delete spam, trolls, inapplicable posts,).

PLEASE RESPECT THESE RULES!

7  Bitcoin / Project Development / BANK RUN! - P2P Fiat-Bitcoin Exchange on: February 12, 2014, 06:22:02 PM
[UPDATE]

Here is the new thread with updated resources:
https://bitcointalk.org/index.php?topic=647457

[END UPDATE]

#############################################################

I would like to announce a concept for a P2P Fiat-Bitcoin Exchange.

Basics:
- Pure P2P, cannot shut down by a central authority, no 3rd party involved.
- Collateral as warranty for fair behavior
- Fiat money will be transferred from one users bank account to the others bank account without any intermediary party. No identification that the money transaction is connected to a BCT trade.
- No fees beside the standard BTC transaction fees.
- Open source

Here is the paper:
https://docs.google.com/document/d/12q5r6S0yMp5TMjApfa7Ci4GRvvvKYvlmWQBYeGxI0zA

I would appreciate a constructive discussion and I am looking for developers.

High-level overview of the protocol:

8  Alternate cryptocurrencies / Altcoin Discussion / Ethereum investment poll 2 (spam/FUD free) on: January 28, 2014, 05:01:22 PM
If you are new to Ethereum, here are some links:

Main site: http://ethereum.org
Blog: http://blog.ethereum.org
Forum: http://forum.ethereum.org
Wiki: http://wiki.ethereum.org
Whitepaper: http://ethereum.org/ethereum.html

Reddit: http://www.reddit.com/r/ethereum
Bitcointalk: https://bitcointalk.org/index.php?topic=428589.0
9  Alternate cryptocurrencies / Altcoin Discussion / Ethereum investment poll on: January 28, 2014, 04:16:59 PM
EDIT:
Closed due too much Spam/FUD:

Reopened as self moderated poll here:
https://bitcointalk.org/index.php?topic=436795

It was not about discussion about Ethereum, it was created as a POLL.

Leave the trolls alone....


Original post:
If you are new to Ethereum, here are some links:

Main site: http://ethereum.org
Blog: http://blog.ethereum.org
Forum: http://forum.ethereum.org
Wiki: http://wiki.ethereum.org
Whitepaper: http://ethereum.org/ethereum.html

Reddit: http://www.reddit.com/r/ethereum
Bitcointalk: https://bitcointalk.org/index.php?topic=428589.0

10  Other / Politics & Society / Jacob Appelbaum & Dmytri Kleiner - Resisting The Surveillance on: January 02, 2014, 04:02:12 PM
Interesting video...

Jacob Appelbaum & Dmytri Kleiner - Resisting The Surveillance State And Its Network Effects:
https://www.youtube.com/watch?v=zOiFgUj9bWI

"...The business model of social media is surveillance and behaviour control."

That is an interesting point and I guess that can be applied to Bitcoin as well. Some mentioned that Bitcoin can be seen also as a social movement.
The public transaction log is a heaven for data miners, even if its hard to track the addresses to individual users. As soon as big merchants (or other central points like exchanges) start using BTC they get an additional business model as well. They will know which address belongs to which real person and can follow a larger part of the tx graph to find a lot more about their users like they could do now with credit cards. A user buying a book at amazon (if they use btc some day) and with the tx graph amazon can follow that users shopping behaviour on many other areas. They could sell these data like facebook is making money of their social graphs and behaviour data.

Another interesting part in the video is when Dmytri says that we dont need a new p2p platform. We have had that platfrom from the very beginning. The internet itself was that platform. But somehow the capitalist market created huge central private gardens and people prefer these golden cages instead staying in their open public parcs.
11  Economy / Goods / BTC T-Shirt on: January 02, 2014, 12:29:47 AM
Here you can order a BTC T-Shirt:
http://monstroesserioes.spreadshirt.de/rethink-bitcoins-A16848051

Some other related shirts here: http://monstroesserioes.spreadshirt.de/
Slogans:
"BURN MONEY, BURN!"
"FUCK FINANCE!"
"STORM THE BANKS!"
"Do something new and different!"
"Citizen of the Transnational Republic"


12  Bitcoin / Project Development / Proof of trust - Anti-Spam mechanism on: December 27, 2013, 10:47:17 PM
Here is a very rough idea of an anti spam mechanism useful for a crypto mail system:
If you send a mail to someone you need to spend x btc to a collateral address which gets refunded to yourself when the receiver confirms that your message was not spam. That way communication between friends or information which has a value to the receiver stays free and unwanted mails get penalized.
Best would be that the receiver could define individually the amount needed to send a msg to him (people have different tresholds what means spam to them). The money frozen from spam could be forwarded to the receiver himself as compensation for reading the spam (unpayed work) or to the underlaying system (development, network, btc miners,...). Additionally there could be a mechanism to add trusted senders to whitelists so they dont need to pay the collateral anymore...

I have not thought more into implentation scenarios but I assume it should be possible either on top or with btc or as a specialized altcoin project.
A simple starting point could be to use a 2 of 2 multi sig tx (sender and receiver need to sign tx so it can pay out). The sender needs to pay in to that tx and the tx output is his own address. If the mail receiver sign that tx the btc amount will go back to the sender, otherwise its lost to him. That will be for sure not enough (creates burned money...) just a rough idea of the direction....

A specialized system would be probably much more flexible and maybe it could be used to other use cases as well: eg. against ddos attacks, forum postings (you need to pay and get a return if people read/like your posts...),....
Basically all use cases where a misuse happens and its currently free or nearly free to misuse. If you need to risk a certain fund and just get it back if the receiver(s) like your contribution, you could establish a effective filtering ans even build a content conpensation scheme out of it.

I am not sure if something similar already exists and if it is really technically feasible. Just wanted to share the idea....
13  Alternate cryptocurrencies / Altcoin Discussion / Some thoughts on Ripple on: December 22, 2013, 06:52:45 PM
I just looked closer to Ripple with high expectations but got finally a pretty bad impression.
Maybe I dont understand all aspects right and maybe I am missing some. I am open for comments if I am wrong with some of the following.
But at least I am not the only one who sees Ripple as at least a pretty misleading project: http://ripplescam.org

Here is my summary of that afternoons investigation:

As far as I understand Ripple, it has much more in common with the traditional banking system then with Bitcoin.
It may be an interesting modernisation for banks and may be successful in that direction as well as it supports new crypto currencies. But it is in many aspects very different to Bitcoin:
- Money as depth
- Based on trust to gateways (banks, brokers, exchanges, FED...)
- NOT decentralized (gateways)
- Controlled and issued by a company
- Not anonymous (at least when you want to convert your IOUs)


I think it includes the same or even higher risks as our traditional finance system.
If a gateway goes default and if it is a huge system relevant one (like MtGox or BTC China), that event could cause a default of many other gateways and a bailout by all the users with trustlines to them (if I understood Ripple correct). The trust lines are obligatory to be able to interact but not well controlled (does the user alway update the trustlines after each tx?).
The inter-gateway (interbank) transfers could cause dangerous system wide effects.

Lets think of an example:
A Ripple user could use Ripple and another exchange with very different prices for arbitrage. So he needs a trustline with at least the tx volume to the Ripple gateway exchange. The fact that there are real reasons why there is a price penalty at some exchanges (problems to get out the fiat like at MtGox, low volume, weak trust of exchanges in some countries with low legal environment, weak security or customer care,......) will be blurred behind the scenes (the exchanges negotiate inter-gateway transfers like interbanking).
That will cause some distorted balances. Say JustCoin (which has normally much lower volume and higher prices then MtGox) will hold a lot of these BTC or USD Vouchers (BTC or USD in ripple are not real, they are IOUs for that currency including the trust that some gateway will convert it back some day, just like fiat). Some day MtGox get hacked/shutdown/defaulted and simply disappears as possible gateway for liquidity for interbanking tx. What happenes to the other small gateways? Will they get desctructed by that major event like in the bank crisis the default of some big banks destroyed small ones?
What happendes to the trust lines many users has setup with MtGox to be able to do arbitrage trades? They will loose that amount (but not only the money they had "desposited" but the whole value of the trustline if they have forgotten to adjust it after every tx). There is no protection of the state for such events unlike the "100k at bank are safe" promise....(and we all pay pretty much for that insurance). Will then a FED step in as gateway to save the system if it had already reached a global system relevant size? 

Another point is the "p2p" transfer between users directly. That sounds like cool p2p and a decentralized system. But if you look closer it turn out it is the same kind of a decentralized system like a money transfer from one users bank to the other users bank. The IOU (I owe you -> debt, fiat) is transferred but it has just some value if you trust a gateway (bank, FED,). So you can make a tx directly but with a token controlled by a central instance. Its like you send a cheque or company voucher to a friend. Its even worse as you have to implicit trust that instance and as far I have seen (not sure with that) there is no automatic adoption to the min. amount of trust needed. That trust is the same you create when doing a deposit to a bank (when paying in 100 USD you trust the Bank for 100 USD). But here the trust/risk is implicit adopted with every tx. At the end your balance is the trust/risk. With Ripple I think you need to change that trust level after every tx (if you have deposited first 1000 USD, then widthdraw 900 you still have 1000 USD trust setup). But I have not looked that close to Ripple, so maybe I am wrong here.

And there a much more problems with Ripple, best explained at http://ripplescam.org.

For me the Ripple system looks very similar to the our banking system, where we suffer from to strong interdependencies to some "too big to fail" companies and socialized losses (bailouts payed by the tax payers). Just to include crypto to that system seems for me more danger then benefit. If the bank lobby and state manage to hype Ripple as better BTC (just because it has crypto) it could become a real danger to the distribution of BTC.
14  Bitcoin / Bitcoin Discussion / BTC thief on: December 02, 2013, 12:25:21 AM
I know it is nearly impossible to track a BTC thief but I just wanted to share what I have found so far in searching for traces of a theft a while ago.
Also I tagged all these addressed which seems to belong to the thief as "BTC Thief" at blockchain.info and linked it to that page.

Here is the Story:
Someone has stolen 44,32 BTC from my Mt.Gox Account due a Phishing attack on 2011-12-25 16:30:22 GMT.
The Address to where it was transferred was: 1MND3zAnRkPCiBLafWb3btog13NyqtNWV5
The IP address from the hacker was reported from Mt. Gox as: 46.250.9.208

As seen here: https://blockchain.info/address/1MND3zAnRkPCiBLafWb3btog13NyqtNWV5
it seems very obvious that all the outputs leading to one input of 277 BTC was probably a wallet where the thief transferred the BTC to another address:

the receiving address:
https://blockchain.info/de/address/132KKNz8pXcREf1M8ZpWrqDme6jJPDecnJ

next step:
https://blockchain.info/de/address/15SaatjLKjHDNWBgMfpDmYF1QCtMptRAAG still funded with about 7 BTC (will not tag that address as it might belong to someone else)
and here: https://blockchain.info/de/address/17vxXzTkmmVf96nstmDqbPF8hYkEiW9Yuw with 270BTC (I assume the thieves address)

another move of all the funds to: https://blockchain.info/de/address/1CB9Z7LBFcWAV7Rk9vhec7B1zezD3T2XiB
and another to: https://blockchain.info/de/address/1GJW1KjgxHGimDhSNSH7b1zk5H2cTG7mVz
which is still funded with 270 BTC.

It seems very obvious that all these addresses belongs to the same person and I assume that there is more stolen BTC other then mine in there.
I found that the IP belongs to a place in the Ukraine:
http://whois.net/ip-address-lookup/46.250.9.208
As it is in the Ukraine and its just an IP from a provider I think there will be no way to find the identity of the thief (maybe the provider want to earn some BTC :-) and help to track him down)

Any help which leads to catch the thief and helps to return me my stolen 44 BTC i will reward with 10 BTC.

PS: still could not tag it as blockcain.info seems to have server problems....
15  Economy / Trading Discussion / NashX - auto-escrowed p2p trade on: November 30, 2013, 06:36:16 PM
I am observing a while the NashX (http://www.nashx.com) project and I find it very interesting. Now it seems to be quite in a "ready to use" state, but unfortunately very few offers/trades are there.
Does anyone has experience with it?
It seems for me currently the best solution for automated escrowed p2p trade, so I am wondering why it does not get more attention. Seems like the developer is not the best in marketing.

I will try it out with some small offers to see how it works in practice.
Hope I could maybe animate anyone to have a look over there as well.

Here is my offer if you are interested:
https://nashx.com/Offer/View/6b1bb9cf-72ec-4f90-a093-832db018ddfa

16  Local / Biete / Verkaufe 0.5 BTC Casascius physical coins (brass) on: November 29, 2013, 03:00:23 AM
0.5 BTC Casascius physical coins (brass)

- Fully loaded with 0.5 BTC, uncirculated and in perfect condition, comes with a protection case.
- I bought it directly from Casascius at the first auction of the 0.5 BTC coins 2013 (roll #1 with prefix 121 and roll #6 with prefix 123).
- Trade only via Escrow
- Insured shipping included
- Prefer shipping inside EU to prevent hassle with customs. Outside EU buyer will take full risk of custom issues.

Here is the pub key and proof that it is loaded:
http://casascius.uberbills.com/?address=123HDSmwmBjpvqr3HVqSvNqAP9JeFNkfrG

PM me for offers.

EDIT: I cannot delete the post, but the offer is not valid anymore.
17  Economy / Goods / Sell 0.5 BTC Casascius physical coins (brass) on: November 29, 2013, 02:57:00 AM
0.5 BTC Casascius physical coins (brass)

- Fully loaded with 0.5 BTC, uncirculated and in perfect condition, comes with a protection case.
- I bought it directly from Casascius at the first auction of the 0.5 BTC coins 2013 (roll #1 with prefix 121 and roll #6 with prefix 123).
- Trade only via Escrow
- Insured shipping included
- Prefer shipping inside EU to prevent hassle with customs. Outside EU buyer will take full risk of custom issues.

Here is the pub key and proof that it is loaded:
http://casascius.uberbills.com/?address=123HDSmwmBjpvqr3HVqSvNqAP9JeFNkfrG

PM me for offers.

EDIT: I cannot delete the post, but the offer is not valid anymore.
18  Bitcoin / Bitcoin Technical Support / problem with an old wallet.dat file on: November 27, 2013, 11:56:28 AM
hallo,
i have a problem with an old wallet.dat file. i bought some coins in april 2013 and now wanted to run the actual mac qt client to see my balance there. i copied over the backuped wallet file to the standard directory (where the new generated wallet.dat was). but when i restart the client the balance is 0 (network data all synced). are there some known issues with changes in that timespan?
i heard of some data corruption problems with the qt client on the mac. i hope that has not destroy my wallet!
hope some one can give me a hint! thanks in advance!

EDIT:
I just have found a backup of the whole folder and there are luckily my coins. seems if you set up a new client with encryption the old wallet file is not supported anymore.
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