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Author Topic: Bounty 20 BTC: Wi-Fi Hotspot, enabled by bitcoin  (Read 24148 times)
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April 28, 2012, 06:56:01 PM
 #41

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April 28, 2012, 07:42:42 PM
 #42

seems like there is some serious interest in this. I might consider looking through my old sources again.

However, you will not be able to do this without a second machine(on the internet or in your local establishment), since bitcoind eats way to much memory even for recent routers. it would be well possible though to have a bitcoind on some cheap vps that the router connects to via RPC to confirm transactions. As for the bitcoin payment itself, it isnt really hard to tunnel bitcoin without enabling malicious users to tunnel voluntary traffic over it.

If that would make anyone of the donors here happy, please respond.
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April 28, 2012, 09:43:07 PM
 #43

You wouldn't need a full bitcoind, only to be able to do the bootstrapping of bitcoind, find a few valid nodes and send the transaction there. I guess in most cases 0 confirmations would be enough anyways... I don't know if an invalid transaction fails silently though or if the other nodes would complain if you got a fake transaction and relayed them there.

Also a possibility: Let the admin input a list of n adresses that are used for single transactions + a warning when the address pool is starting to run low. Check via blockexplorer or other services for transactions in the network or fulfilled payments.

The best and probably easiest solution would still be the LAN bitcoind I guess though. Please make it send it's traffic as fast as possible (so someone can get the whole block chain quickly if necessary).

+1 BTC from me if the solution: Works on Open WRT and DD WRT, is able to traffic shape the paying users (e.g. at least 50 kB/s per user, up to 500 kB/s for all users) and is Open Source, hosted on GitHub.

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April 28, 2012, 09:54:06 PM
 #44

You wouldn't need a full bitcoind, only to be able to do the bootstrapping of bitcoind, find a few valid nodes and send the transaction there. I guess in most cases 0 confirmations would be enough anyways... I don't know if an invalid transaction fails silently though or if the other nodes would complain if you got a fake transaction and relayed them there.

Also a possibility: Let the admin input a list of n adresses that are used for single transactions + a warning when the address pool is starting to run low. Check via blockexplorer or other services for transactions in the network or fulfilled payments.

The best and probably easiest solution would still be the LAN bitcoind I guess though. Please make it send it's traffic as fast as possible (so someone can get the whole block chain quickly if necessary).

+1 BTC from me if the solution: Works on Open WRT and DD WRT, is able to traffic shape the paying users (e.g. at least 50 kB/s per user, up to 500 kB/s for all users) and is Open Source, hosted on GitHub.

Hi, for sending you are right, in theory you dont need to allow a complete tunnelling of the bitcoin protocol. however, what I meant with running bitcoind on the hotspot device was that the owner needs to confirm the incoming transaction. As I also stated, this could be done with some other pc/vps that can be queried via RPC.

As for accepting 0/unconf transactions with this, as long as the tx is valid(it wont show up in the receivers client if it is invalid), I would consider the risk minimal - at least lower than the risk of people performing a chargeback(friendly fraud) when paying with their credit card or gaypal account.

However, long story short, I developed a similar solution about a year ago, on a D-Link DWL 622AP using openwrt. The DWL is a very small device with 2 megs of Flash, and 8 megs of RAM, so my solution should work on any openwrt device, since the 622AP is pretty much as low as it gets when speaking of system resources. I remember I solved the captive portal task back then by adding a firewall rule for new connected clients that redirected all traffic to the router itself, and remembered clients by mac and user/pass combo(having the mac enabled for as long as the wifi connection persists + 2 hours, after that asking for user and pass again). So what needs to be done is adding an little proxy that will connect bitcoind on the client machines to our payment gateway bitcoin, a teensy piece of code to verify incoming transactions, and nicer pages for the frontend(webdesign isnt really my thing). If need is there, an admin panel would need to be written too.

If there is still interest, and the bounties are still up, I might consider reopening this project for BTC.
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April 28, 2012, 10:24:08 PM
 #45

You wouldn't need a full bitcoind, only to be able to do the bootstrapping of bitcoind, find a few valid nodes and send the transaction there. I guess in most cases 0 confirmations would be enough anyways... I don't know if an invalid transaction fails silently though or if the other nodes would complain if you got a fake transaction and relayed them there.

Also a possibility: Let the admin input a list of n adresses that are used for single transactions + a warning when the address pool is starting to run low. Check via blockexplorer or other services for transactions in the network or fulfilled payments.

The best and probably easiest solution would still be the LAN bitcoind I guess though. Please make it send it's traffic as fast as possible (so someone can get the whole block chain quickly if necessary).

+1 BTC from me if the solution: Works on Open WRT and DD WRT, is able to traffic shape the paying users (e.g. at least 50 kB/s per user, up to 500 kB/s for all users) and is Open Source, hosted on GitHub.

Hi, for sending you are right, in theory you dont need to allow a complete tunnelling of the bitcoin protocol. however, what I meant with running bitcoind on the hotspot device was that the owner needs to confirm the incoming transaction. As I also stated, this could be done with some other pc/vps that can be queried via RPC.


Or just a port foraeding over a ssh tunnel.

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April 29, 2012, 12:19:00 AM
 #46

how did you get to ssh port tunnel? that is totally unrelated...
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April 29, 2012, 01:54:47 AM
 #47

how did you get to ssh port tunnel? that is totally unrelated...

It's a solution to the problem.  Rather than run a bitcoind on the hotspot hardware or use an api to do it with an overlay network, simply forward bitcoin ports from the hotspot hardware directly to a full bitcoind that you control.

"The powers of financial capitalism had another far-reaching aim, nothing less than to create a world system of financial control in private hands able to dominate the political system of each country and the economy of the world as a whole. This system was to be controlled in a feudalist fashion by the central banks of the world acting in concert, by secret agreements arrived at in frequent meetings and conferences. The apex of the systems was to be the Bank for International Settlements in Basel, Switzerland, a private bank owned and controlled by the world's central banks which were themselves private corporations. Each central bank...sought to dominate its government by its ability to control Treasury loans, to manipulate foreign exchanges, to influence the level of economic activity in the country, and to influence cooperative politicians by subsequent economic rewards in the business world."

- Carroll Quigley, CFR member, mentor to Bill Clinton, from 'Tragedy And Hope'
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April 29, 2012, 01:57:23 AM
 #48

how did you get to ssh port tunnel? that is totally unrelated...

It's a solution to the problem.  Rather than run a bitcoind on the hotspot hardware or use an api to do it with an overlay network, simply forward bitcoin ports from the hotspot hardware directly to a full bitcoind that you control.
Yup. SSH can be used for a cheap and secure VPN.

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April 29, 2012, 02:01:05 AM
 #49

OP, bump bounty to 30 btc.. Im good for the extra 10.. 

Im actually good for a lot more than that..  but 30 is good for now...  Wink

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April 30, 2012, 03:27:33 AM
 #50

That bounty thing is encouraging, so today i started working to accomplish this. I'm working on the nodogsplash solution on top of openwrt, so when this is finished we will only need to install a simple package (it should be compatible with openwrt and ddwrt) Smiley



It is on a very early stage (yet), but it is capable of granting you access to the network using btc Smiley I will publish all the sources and stuff in the next few days, when i get this to a more mature state Cheesy
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April 30, 2012, 03:54:39 AM
 #51

Sounds like a cool idea.  is the bounty at 30 now?  I will chip in 5 to make it 35.
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April 30, 2012, 06:50:00 AM
 #52

I really like this idea.
Suggestion:
As long as the initial connection allows to connect to the bitcoin network (bitcoin ports are open) you could spare some effort by using the bitcoinmonitor.net solution. Setup like 100 addresses in the router that are given to users in a round-robin fashion. Register these addresses with an agent at bitcoinmonitor.net. Receive a http callback from the agent as soon as the coins are incoming. Allow full access to user.
This way the only thing you need on the router is the ability to accept incoming http payment confirmations and some simple logic to connect user sessions to bitcoin addresses - no need to relay transactions or similar stuff related to bitcoin protocol.

Problem i see is that at least in Germany you are legally getting into trouble if someone does illegal things from your wifi - so-called "Störerhaftung"...

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April 30, 2012, 08:04:32 AM
 #53

Problem i see is that at least in Germany you are legally getting into trouble if someone does illegal things from your wifi - so-called "Störerhaftung"...

Run everything through VPN. Include the feature in the router, that allows automatic VPN usage.

In Germany, VPN is required in every case, since otherqwise the media companies can send you bills for bittorrent downloads Cheesy

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April 30, 2012, 09:20:53 AM
 #54

to avoid running bitcoind, the wifi router could forward the transaction to an Electrum server, and get confirmations from it.
I am interested in this project and I can provide technical assistance towards such a solution.

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April 30, 2012, 04:23:11 PM
 #55

first email i get from Fon.com
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It's not the first time we have been asked to adapt Bitcoin through our Fon community. The main problem we have found is that Bitcoin is still a small community and because the number of private hotspots at Fon is also minimal (very few out of the 5M we have) it doesn't make sense to have a new means of payment for so little gain. In addition the tributation is still very unclear on this digital currency. That doesn't mean that if one day bitcoin reaches the mass market we can adopt it.
second email i get from Fon.com
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I'll forward this to my colleagues of Business Development and they'll see if adding bitcoin is worth it. They studied the case before and the answer was no, but I'll forward them the link https://bitcointalk.org/index.php?topic=7998.0;all

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April 30, 2012, 09:30:26 PM
 #56

to avoid running bitcoind, the wifi router could forward the transaction to an Electrum server, and get confirmations from it.
I am interested in this project and I can provide technical assistance towards such a solution.

This had crossed my mind also. It is an ideal application for a lite client, like ThomasV's Electrum. Maybe blockchain.info and the iOS app has some merit also.

Maybe a viable business model is to provide multiple bitcoind backends on remote servers, use stratum to communicate with the wifi routers lite clients and take care of install, billing, maintenance, etc for anybody wants to get paid for one-click install public access wifi sharing on their router? The business gets a small cut from many (maybe many many many) routers and the router/access owners get all the "s/ware bitcoin stuff" just done for them and a bitcoin check in the mail every month. Kind of like a wifi router sharing pool.

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April 30, 2012, 10:30:25 PM
 #57

...or just do it via bit-pay.com. Wink

They charge 0.99% on pure bitcoin transactions though.

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June 06, 2012, 12:38:56 AM
 #58

Somehow I missed this thread.  Previously on another thread I had posted:


Additionally, there could be a tie in with this to the Free Network Foundation's project, with the hotspot also acting as a node in their mesh network.  That will give privacy at the edge node, encrypted using FreedomTunnel (VPN).

 - http://freenetworkfoundation.org
 - http://chili.freenetworkfoundation.org/projects

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June 06, 2012, 01:04:58 AM
 #59

So the running total is 35 BTC, right?
+1 BTC if open source
There were some other +1's back there... we're at about a 200 USD bounty right now

Edit: I'm no longer offering this. Let me know if someone seriously attempts this and has escrow set up, though.

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June 06, 2012, 01:39:09 AM
 #60

So the running total is 35 BTC, right?
+1 BTC if open source
There were some other +1's back there... we're at about a 200 USD bounty right now

I think the OP's offer (20 BTC) was more than a year ago, so maybe there needs to be a check to make sure the offer is still good.  The other (10 BTC + 5 BTC + 1 BTC (conditional) + 1 BTC (conditional)) are more recent.

Depending on what the deliverable is, I know there is interest in this that would raise the bounty a bit.

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