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1  Local / Hrvatski (Croatian) / Re: Visoki volumen na Bitkonan? on: October 14, 2015, 05:43:36 PM
Igraju bota več misec i pol dana? Mozda.

Modza je i dobro je za hrvatsku bitcoin scenu.
2  Local / Hrvatski (Croatian) / Visoki volumen na Bitkonan? on: October 14, 2015, 03:15:21 PM
Što se događa na bitkonan? Visoki volumen počelo u sredini rujna.

Počelo oko 50 btc na sedmicu i naglo porastlo do oko 650 btc (!) na sedmicu.





Ima ovi post ali ni ovi ljudi neznaju zašto.
https://www.reddit.com/r/BitcoinMarkets/comments/3ls5tr/bitkonan_volume/

Meni upoče nije jasno. Huh
3  Bitcoin / Project Development / Re: tlsnotary - cryptographic proof of fiat transfer for p2p exchanges on: September 21, 2014, 06:50:55 PM
I've just read this entire thread. It looks great.

Is this project still going?
4  Bitcoin / Development & Technical Discussion / Re: Python Bitcoin ECC library, supports signing, transactions, determinstic wallets on: March 04, 2014, 01:05:06 AM
What are you coding that needs such breakneck speed?
5  Other / Beginners & Help / Re: Addresses starting with 3 instead of 1 on: March 02, 2014, 04:06:50 PM
They are P2SH addresses. Most commonly used for multisig.
6  Bitcoin / Development & Technical Discussion / Re: Multisig address different on API and bitcoin-qt on: February 22, 2014, 04:10:46 PM
Probably not. I suggest trying it to see.

Report back when you find out for sure.
7  Bitcoin / Development & Technical Discussion / Re: Multisig address different on API and bitcoin-qt on: February 22, 2014, 03:34:40 PM
The order of public keys matters

Code:
./bitcoind -testnet createmultisig 2 '["0246137887433809d28ba48d08153f5461ced55703f27fd46dedb775a5f5fe8a86","0352cf6e2c4d36294a89fe520ec6f4fa29859e6f69b549b8eb4128b55f596923c6","028c82c09e3b893f1611cef20c86b399f27d9d76fe9c456df33a0f8319958689f7"]'

{
    "address" : "2N16Bm6jDE1FzLNALz7k6vaNTLt4h2A7663",
    "redeemScript" : "52210246137887433809d28ba48d08153f5461ced55703f27fd46dedb775a5f5fe8a86210352cf6 e2c4d36294a89fe520ec6f4fa29859e6f69b549b8eb4128b55f596923c621028c82c09e3b893f16 11cef20c86b399f27d9d76fe9c456df33a0f8319958689f753ae"
}

8  Economy / Service Announcements / Re: [ANN] bitaddress.org Safe JavaScript Bitcoin address/private key on: February 22, 2014, 03:21:40 PM
As it is, it's too much of a hassle to verify authenticity.

Depending on how much money you're storing in the paper wallets, the hassle will be worth it.
9  Bitcoin / Development & Technical Discussion / Re: Multisig question. on: February 22, 2014, 03:13:38 PM
What we need: a graph showing the number of transactions to and from 2-of-3 multisig addresses plotted against time.

I'm working on this at the moment. Parsing the blockchain is taking forever.. Took an hour to get to 83000. Then a further 19 hours to get to 128500.. I'm recording txid/vout/address/blocktime for all payments to scripthash addresses (version byte \x05).

Once I have this I should get a nice plot of payments to multisig addresses, and then rescan looking for vins spent from multisig addresses. There'll probably be a good deal of lost BTC sitting at these addresses.

That's fantastic.
Multisigs are often used for trustless escrow, I guess many spends from them will be to two addresses. Another useful measure, if it's not too much trouble, could be to plot the proportion of multisig spends to exactly two addresses, and out of those, the % fee for arbitration. So in the tx I linked above the fee was 8%. Would be interesting to see the going rate.

You can list multiple addresses and spends in the output of a transaction. 

Make sure to add your own as the multisig raw transaction requires a change address.

The change address is the address an extra coins go to from the transactions. 

It was not explicitly covered in the multisig section of the wiki last time I looked and I lost all my coins as a result... all my testnet coins which are still a bother to get without a gpu rig.

donations for testnet coins mfZqJvCNgJPL2y84KgamRcxUw9SUMPmej9 if you find this helpful.

At least it was only testnet  Grin
You can get them from this faucet https://tpfaucet.appspot.com/

That's true for every transaction by the way not just multisigs. Some unlucky people have lost serious money that way.
10  Bitcoin / Development & Technical Discussion / Re: Multisig question. on: February 19, 2014, 12:45:55 AM
How hard would it be to enforce the commission? Illegal marketplaces can do whatever they want afaik, but is there any better way to implement the fees other than doing it as side transaction and just refunding them on every "failed" purchase?

You seem new to bitcoin. Refunding on every failed purchase is not a thing that happens.

Transactions can have multiple outputs. The marketplace simply provides a raw transaction with most money going to the seller but some going as fees to the marketplace.

So I found this example of a likely multisig payment in a recent block.
https://blockchain.info/tx/9637a88575f472f4290daebb3db6e41f179038acc2b020b36b6bc7d2fd198cdf
92% of the money goes to one address and 8% goes to another, so it's probably a 2-of-3 arbitration with a fee. Doesn't have to be anything illegal, http://bitrated.com/ is pretty popular too.
11  Bitcoin / Development & Technical Discussion / Re: Multisig question. on: February 18, 2014, 12:13:18 PM
A membership fee might be counterproductive, especially since this kind of stuff benefits from the network effect. Information wants to be free, it's hard to get people to pay for it.

People use craigslist for free peer discovery. But it makes its money by selling special ads that rise to the top of search listings. That covers craigslist's server costs.


I've checked and it seems on The Marketplace almost all trades are ended by arbitrator and seller together signing a transaction, the buyer is merely expected to click Finalize on the page after receiving their drugs. The commission-on-every-trade model is easy to enforce then if the buyers are not technically competent or interested, but I wonder what happens after easy-to-use multisig wallets are released.

What we need: a graph showing the number of transactions to and from 2-of-3 multisig addresses plotted against time.
12  Bitcoin / Development & Technical Discussion / Re: Multisig question. on: February 17, 2014, 05:43:36 PM
The users might cheat you out of your commission. The buyer and seller have an incentive to agree to sign a transaction that sends all the money to the seller, nothing to your site.

However all transactions are public on the blockchain so you could see them doing this and take action, such as banning them.

It's unlikely because I guess your commission will be small (bitmit had 1%) and people would generally recognise how useful your site it and won't be so nasty. I know there is a drug marketplace called The Marketplace which uses 2-of-3 multisig. I wonder what they've done if anything against buyer and seller collusion.

Or you could have a model where commission is only collected if there is a dispute, or where the seller pays a small fee for the advert, or where buyer and seller have entry fees, etc etc.
13  Bitcoin / Development & Technical Discussion / Re: What meaningful info people want to see extracted from blockchain? on: February 07, 2014, 11:35:51 PM
Number of transactions to and from p2sh addresses plotted against time.
Could be interesting because I see many new tools about for 2-of-3 multisig and I wonder how widely they are used.

edit: here is an example of one such address being used.
14  Bitcoin / Project Development / Re: Multi Signature Address Script and Escrow Service on: January 18, 2014, 12:13:27 PM
Have you yet run into the problem that I just have?

Very few people in the real world posses a client capable of sending coins to a multi-sig address. Testnet worked fine for me, but on mainnet blockchain.info doesn't support multi-sig sending, for example....

bitcoinqt and electrum send to them.
Which is ridiculous, p2sh addresses have been out for years.
15  Bitcoin / Project Development / Re: Multi Signature Address Script and Escrow Service on: January 06, 2014, 11:40:54 PM
OutCast3k, congrats on the release! We talked about it awhile ago on IRC, I'm glad to see you released it.

Also you might want to look at http://www.bitrated.com/ which does the same thing but requires an account and has some other features. I don't think it can be easily used with an online auction site, like bitmit.net with multisigs. Your site seems much better for that.

It doesn't do the same thing; Coinb.in has a general purpose tool that can be used for many kinds of multi-signature transactions, while Bitrated was created specifically to facilitate arbitration services and has an interface that was optimized for that purpose. Also, Bitrated does not require setting up an account - its optional and only for arbitrators that wants to be listed on the website, and buyers/sellers don't have accounts at all (and I believe it should be quite easy to use with something like bitmit).

Thanks for the correction. Sorry about the misinformation.
16  Bitcoin / Bitcoin Discussion / Re: Has anyone here ever actually received an anonymous donation? on: January 05, 2014, 02:01:57 PM
I got a donation from a guy I helped on these forums.
17  Bitcoin / Project Development / Re: Multi Signature Address Script and Escrow Service on: January 04, 2014, 12:02:12 PM
Very good. Allows use of multisigs without installing bitcoin-qt and downloading the blockchain.

However you shouldn't use the word "escrow" to describe this. This isn't escrow because the escrow agent cannot run off with the money. Also "escrow" agents are heavily regulated in many parts of the world, while arbitrators, adjudicators, mediators, judges, reconcilers, referees, umpires, etc are not subject to that regulation.
Changing the word doesn't change much in law, but its bad to give the wrong idea to lawyers since multisig transactions are not something that's ever existed before to my knowledge.

Also you might want to look at http://www.bitrated.com/ which does the same thing but requires an account and has some other features. I don't think it can be easily used with an online auction site, like bitmit.net with multisigs. Your site seems much better for that.


edit: some other thoughts.
1. If the public key is copied in with a mistake it could lead to loss of funds. Perhaps we need a standard for base58check public keys? According to the wiki (https://en.bitcoin.it/wiki/Base58Check_encoding#Version_bytes) you'd use the version byte 42 but it's marked "proposed" and I can't find any other info on it.
18  Bitcoin / Bitcoin Discussion / Re: How are large mining pools not a threat? on: January 04, 2014, 11:45:07 AM
Mine on p2pool.

P2Pool seems like a good solution from what I understand. Yet according to blockchain.info, it accounts for only 2% of mining power. Can someone familiar with P2Pool vs other pools explain why it's not more popular? Is there something that could be done to help it grow?

The variance in payouts is pretty big since each share has a larger difficulty than shares of other pools.
Also p2pool has a 1% fee or something, I think other large pools can afford to take no fee at all.
It shouldn't matter in the long run. I guess miners don't know or don't care as long as the btc keeps coming in.

People can donate to p2pool which adds to the rewards miners get. If enough people do it publicly it might convince miners to switch.
19  Bitcoin / Bitcoin Discussion / Re: How are large mining pools not a threat? on: January 03, 2014, 11:55:27 PM
Mine on p2pool.
20  Bitcoin / Electrum / Re: PaperGen Plugin - Create and Fund Paper Wallets within Electrum on: December 31, 2013, 06:02:01 PM
I was playing with this plugin to learn a bit how to write electrum plugins.

Can't understand how to make it work with electrum 1.9 on ubuntu 12.04

The only change I can see from enabling the plugin is on the right-click menu in the Receive tab there appears "Select for PaperGen". Selecting it appears to do nothing.

Did you check Tools-> PaperGen?

Yep, nothing there that wasn't there before.
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