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Hi. This gonna be rather a general question, but I hope to get some help.

I have created a pool, now client wants me to implement something similar to what cryptocoins exchanges do. That is, a miner should be able to mine any coin and then withdraw equivalent in any other cryptocoin.

I'm supposed to use one of the exchanges with API. For now my choice is coins-e.com (I analyzed other exchanges as well, they have very similar API's so it doesn't really matter which one I'll choose). I asked them about it, and they said it is possible and they answered:

"
Use the wallet commands here to get wallet addresses and deposit - https://www.coins-e.com/demo/support/api/#wallet

Then create orders - https://www.coins-e.com/demo/support/api/#orders

I would check the order book first - https://www.coins-e.com/demo/support/api/#publicdata-market-depth

"

Their API is here: https://www.coins-e.com/demo/support/api/

What do you think about this? Is this even possible? They say it is, but what do you think? It looks like I'll have to :

1. Keep all the mined coins on our wallets, not send them immediately to miners.

2. Manage users' accounts, that is, I will have to keep track of their accounts (how many BTC they have, how many LTC etc.). Then, when one of them mines LTC, and wants to get BTC, I will have to try to sell some of the LTC to get BTC, and then upgrade his/her account information accordingly.

Does it have sense?

Hi,

I'm supposed to create a pool (in company I work for), I have a very poor cpu (2.7 ghz) and a few gpu cards available. But they are not sufficient even for bitcoin testnet. Now I'm trying to implement litecoin, but with my cpu I have only 1 kh/s.

Can you guys tell me what you are using for developing anything related to crypto currencies?

Hi,

I use a pool based on node-stratum-pool ( https://github.com/zone117x/node-stratum-pool )

It works well with bitcoin, but with litecoin-qt working as a server I receive ECONNRESET error.

Everything's look ok, user and password match, ports are OK.

What else can I do? Have anybody experience with this issue?

Edit: I made a mistake entering json-rpc communication port, I entered 19333 instead of 19332 Whole day spent on this

Thanks!

Hi,

I'm a bit lost. Is this possible to have many output addresses in generation transaction (coin base)? I mean, addresses which will receive the 25BTC award? Divided, so everybody will receive his/her part.

Edit: On reflection, I think it should be, after all it's almost "normal" transaction, isn't it? So it can have one input and many outputs, right?

It's 3.5.0, I just need to mine with gpu on testnet, that is why I use an old version.

Thanks @ckolivas.

This is the output of cgminer.

I use it to mine on testnet. There are 4 radeon 79xx gpu cards, and according to cgminer stats it does ~2.5gh/s - I was hoping to mine something, especially that current testnet difficulty == 1.0, but it doesn't work, hence I posted this warning(?) messages.

Hi,

I see these messages when cgminer works, but can't find any documentation regarding them. What do they mean?

They didn't come one after another, I only collected the messages I don't understand. Here we go:



I'd be grateful for any help.

OK, thanks again!

OK, thanks, I've got it now. But now, the difference is huge, what were the reasons behind this value?

Thanks, but isn't this true for "normal" transactions as well? Then why the difference?

Hi,

why generation coins require 100 confirmations while there is a rule of only 6 confirmations of transactions?

Thanks! Somehow I couldn't find it.

Hi,

Here: https://github.com/zone117x/node-stratum-pool

There is a function in transactions.js called generateOutputTransactions ( here: https://github.com/zone117x/node-stratum-pool/blob/master/lib/transactions.js#L126 ) which creates generation transaction.

And there are these lines:

rpcData, from what I found, is a result of calling the getblocktemplate rpc command.

But what is this rpcData.payee? There is no such thing when I call getblocktemplate in bitcoin's console. And these line are the only place in the project where this "payee" occurs.

Do you have an idea?

p.s. this project is being actively developed, so I don't think it's an error.

edit: after some googling, I found that there is another project with this "payee" field from getblocktemplate:

https://github.com/darkcoinproject/darkcoin-stratum/blob/1aa9317eb1612e290d9dad232744a1cda844471a/lib/block_template.py#L57

But, apart from that, google doesn't bring any useful information.

Thanks!

I'm now reading this:
https://www.cryptsy.com/pages/privateapi

And I can see I can put a proposition to sell e.g. LTC for BTC, what I can't see is:
1. Where can I put an address to which BTC should be send after a successful transaction
2. How can I know there was a successful transaction?

Or maybe I'm missing something, and services like this work in a completely different way than I think they should work?

Hi,

I need to find an automatic altcoin/bitcoin exchange service, that is I need the following:

1. I have some altcoins on address A
2. The service allows me to send those funds to an address provided by them
3. I give them my bitcoin address B
4. After a successful transaction they send me bitcoins to address B.


Is there anything like this?

Hi,

Since a few hours testnet difficulty==1.

Using this calculation: http://tpbitcalc.appspot.com/?difficulty=1&hashrate=1&exchangerate=557.73&bitcoinsperblock=25.00&rigcost=1000.00&powerconsumption=80.00&powercost=0.10&investmentperiod=355
It looks like I should solve a block in about an hour. But after 5 hours cpuminer didn't do it.


I know it's statistically possible, but maybe I'm missing something?

edit: well, it's high again (110221) but for 5 hours it was 1, I'm completely lost, why didn't the miner find a solution?