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Author Topic: [ANN] Litecoin - a lite version of Bitcoin. Launched!  (Read 252603 times)
coblee
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October 09, 2011, 06:14:28 AM
 #1

LAUNCHED

Download the binaries from: http://litecoin.org
Check out the source: https://github.com/litecoin-project/litecoin
Wiki: http://litecoin.info
Forum: http://forum.litecoin.net/



Litecoin is the result of some of us who joined together on IRC in an effort to create a real alternative currency similar to Bitcoin.  We wanted to make a coin that is silver to Bitcoin's gold.  Various alternative currencies have come and gone.  Some brought innovation, but they all had problems.

  • ixcoin - Nasakioto premined 580k coins. Seemed like a pump and dump. Competed with Bitcoin for GPU resources - Dead (~2 gh/s)
  • i0coin - Basically ixcoin without the premine. Not much support was given to this coin after it was released. - Dead (~5 gh/s)
  • SolidCoin - Innovative quick transaction times. Appears to have been run aground by CoinHunter, its creator, due to insecure changes and immature forum presence. - Dead, shutdown by CoinHunter
  • GeistGeld - Lolcust premined 7.7 million coins.  15 second block time is probably a bit extreme. - Alive, but limping (~15 gh/s)
  • Tenebrix - Lolcust premined 7.7 million coins.  CPU proof of work using scrypt is very innovative.  Price doing fairly well on btc-e.com. - Alive (~0.003 gh/s)
  • Fairbrix - Basically Tenebrix without the premine.  First launch was crippled due to bad config.  Relaunch attacked initially - Doing OK now, but no exchange so far. - Alive, but limping (~0.0001 gh/s)

We wanted the best innovations of Bitcoin and these other currencies to create a coin with all of their benefits, but nearly none of their problems.

Proof of Work

We really liked Tenebrix's Scrypt proof of work.  Using Scrypt allows one to mine Litecoin while also mining Bitcoin.  We humbly offer a big thanks to ArtForz for the implementation.

Premines

Litecoin will come with 150 premined coins: just the genesis block and the first 2 blocks to confirm the genesis is valid.  We believe a coin needs to be released in a fair manner.  Having one person (or a group) control a large amount of coins that can be used as they see fit is against the decentralized vision of Bitcoin.  Yes, it is true that without a stash of premined coins, we will not be able to afford to pay for bounties, but we believe people will see the virtue of this coin, invest in it as early adopters, and will be willing to spend time creating services to make this coin better.

Fast transactions

We were impressed by the convenience of SolidCoin's fast transactions.  Although we know that fast confirmations are not necessarily as secure as Bitcoin's slower confirmations, they are very convenient for small merchants who don't need transactions to be super secure. The average Litecoin block takes 2.5 minutes, one quarter of Bitcoin's 10 minutes.  So if merchants wanted to be as safe as Bitcoin, they can wait for 4 times the number of Litecoin confirmations as compared to Bitcoin. But most merchants can readily accept 1-confirmed transactions for small amounts of litecoins.

Difficulty retarget

We will keep the retarget block the same as Bitcoin's 2016, but because blocks are found 4 times faster, difficulty will retarget about every 3.5 days.  The combination of fast retarget times and Scrypt proof of work (Litecoin will not compete with Bitcoin for miners) means we expect to not see the sort of problem Namecoin encountered; hashing power that leaves more suddenly than it came, causing a high difficulty slog for everyone who stayed.

Coin generation

Miners will generate 50 coins per block.  In light of our faster blocks, to properly mimic Bitcoin's generation trajectory, we needed to change the blocks at which coin generation is halved.  Bitcoin generation is halved every 210,000 blocks.  Litecoin generation will be halved every 840,000 blocks.  For those of you doing the math, Litecoin is scheduled to produce roughly 4 times as many coins as Bitcoin, about 82 million litecoins.

Fairness

We have come up with a plan that we believe is most fair.  Some previous coins were released without Windows binaries or without source code; we consider this as unfair as it is unsafe.

We released the source code and binaries ahead of time... 3 days before launch.  People had time to compile the source and run the client on their machines against the Litecoin testnet.  So people were able to make sure everything was working well before the launch.  We also had a poll so that people can vote for a launch time that best suits them.  At the time of the launch (Oct 12 03:00 GMT), we released the genesis hash and everyone started mining at the same time.  All it took was a simple change in the config file in order to mine the real coin instead of the testnet coin.

51% attack

The problem with alternative currencies is that the network hashrate is likely low when the coin starts up, making an easy target for any potential 51% attacker. With a little hope, a little prayer, a lot of hype, and due to our innovative release, there was a large hashrate from minute one.  We believe this deterred any attackers from targeting this chain.  As expected, there was a lot of natural orphaning of blocks, due to having so many people mining on the chain at once.  With block locking at every difficulty change, we were able to avoid any attacks from succeeding. (if there were any)

Source code

The source code is here:
   https://github.com/litecoin-project/litecoin

This is based on the latest Bitcoin code. You can either build the daemon version (litecoind) or you can build the gui version (Litecoin QT). See the build docs.

Similar to Bitcoin, you may want to create a litecoin.conf file here:
    Windows: C:\Documents and Settings\<username>\Application Data\Litecoin
    Win7: C:\Users\<username>\AppData\Roaming\Litecoin
    Mac: ~/Library/Application Support/Litecoin
    Unix: ~/.litecoin

Port is 9333. Open if on your router if you know how. This will allow you to have more than 8 connections.
And default RPC port is 9332. This is the port miners will use to communicate with your client/daemon.

Sample litecoin.conf file:
Code:
server=1
rpcuser=user
rpcpassword=password

#Change this if you want to use a different rpc port for mining
#rpcport=9332

#Only uncomment this if you are running litecoind and want to run Litecoin in the background (not Litecoin QT)
#daemon=1


So tell us what you think. Come to the Litecoin forums (http://forum.litecoin.net) or drop by #litecoin or #litecoin-dev on freenode IRC to chat.

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
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coblee
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October 09, 2011, 06:18:01 AM
 #2

Poll is up: https://bitcointalk.org/index.php?topic=47418.0

Litecoin was launched on Thursday Oct 13, 03:00 GMT

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
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October 09, 2011, 06:23:47 AM
 #3

what's the difference between this and fairbrix? also, what's the guarantee that you won't get 51%'d and lose like a crapload of coins?

"I may be mean-spirited, but at least I don't eat babies" - Lolcust
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coblee
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October 09, 2011, 07:14:58 AM
 #4

what's the difference between this and fairbrix? also, what's the guarantee that you won't get 51%'d and lose like a crapload of coins?

Fairbrix, like Tenebrix, has no cap in total number of coins. So it keeps inflating forever. Litecoin will have a cap similar to Bitcoin. Also, Fairbrix average transaction times is 5 minutes with 25 coins generated in a block. Litecoin is 2.5 minutes with 50 coins in a block.

One of the goals of Litecoin is to not change what's working (from Bitcoin) unless there was a good reason to. Litecoin is also forked directly form the Bitcoin source code, so it won't have any new security holes that doesn't plague Bitcoin also. One of the reason why the first Fairbrix launch failed so miserable is because it is a fork of Tenebrix, a fork of Multicoin, a fork of Bitcoin. And somewhere in those forks, a nasty bug crept in that caused things to go horribly wrong.

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
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October 09, 2011, 07:21:57 AM
 #5

@Coblee

Ignore the idiots, they will ask questions they know the answer to just to hijack thread and bloat it with BS. Litecoin sounds like a plan.

I am working on some exchanges.
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October 09, 2011, 07:36:29 AM
 #6

PERFECT!  This looks like the CPU mining alternative to tenebrix I've been waiting for.  Will definitely support this chain with about 40khash out of the gate, likely far more later.

Gimme!


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October 09, 2011, 07:45:53 AM
 #7

Awesome! I'll give this a shot, it looks like the best alternative so far!
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October 09, 2011, 08:02:31 AM
 #8

So you didn't get in early enough on bitcoin? what is the point of this? At least some of the other currencies tried to do something different.

Quote
With a little hope, a little prayer, and a lot of hype due to our innovative release,

faster transactions and scrypt is innovative?

lemme hit you with a big ol book called a dictionary:

innovative [ˈɪnəˌveɪtɪv]
adj
 using or showing new methods, ideas, etc.

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October 09, 2011, 08:24:38 AM
 #9

1. Fork Project
2. Mine at start
3. Sell
4. Profit
5. Repeat

If you want your currency to succeed, you should add some innovative things, otherwise it will be just another one of these quick mine&dump currencies, then price/diff falls until the exchanges drop it...
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October 09, 2011, 08:32:54 AM
 #10

A somewhat boring and formalistic question, but does Litecoin "sorta-officially" supersede Fairbrix (in the sense of, would efforts still be spared to organize infrastructure for fairbrix, or would said efforts be completely redirected to the benefit of Litecoin)?

Geist Geld, the experimental cryptocurrency, is ready for yet another SolidCoin collapse Wink

Feed the Lolcust!
NMC: N6YQFkH9Gn9CTm4mpGwuLB5zLzqWTWFw67
BTC: 15F8xbgRBA1XZ4hmtdFDUasroa2A5rYg8M
GEG: gK5Lx6ypWgr69Gw9yGzE6dsA7kcuCRZRK
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October 09, 2011, 08:36:38 AM
 #11

Yeap, just curious, will anyone be supporting the development of Fairbrix or you will be doing the development of Litecoin + Fairbrix?

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October 09, 2011, 08:54:32 AM
 #12

Why do all these coins have to be called by a name whose sole function is to show a feature that they have that the original does not? Are we really going to be using Solidcoin, Litecoin, Speediercoin, Freecoin, or whatever other name people come up with in 20 years, and what are people supposed to think of the name? The only thing I know of with a reactionary name that has ever had any success is openoffice.org. All the other "hip alternatives" - Firefox, Linux, Android, etc. have names that stand on their own to someone who has never heard of the original, and that's what I like about Tenebrix (and GeistGeld).

Argumentum ad lunam: the fallacy that because Bitcoin's price is rising really fast the currency must be a speculative bubble and/or Ponzi scheme.
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October 09, 2011, 09:32:30 AM
 #13

I like.

This is the best alternative coin so far except perhaps Namecoin.

I don't know if being GPU hostile is a good thing or not. Let's find out together.
I'll be putting 3 cores on this.

Fixed number of coins --> good thing, more predictably.
No premine, a well organized and fair release process --> +100 for this.

Can't wait.

Please do not pm me, use ron@mastercoin.org instead
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coblee
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October 09, 2011, 09:38:33 AM
 #14

@Coblee

Ignore the idiots, they will ask questions they know the answer to just to hijack thread and bloat it with BS. Litecoin sounds like a plan.

I am working on some exchanges.

Thanks BitcoinEXpress. Let me know how I can help.

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
coblee
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October 09, 2011, 09:46:50 AM
 #15

Yeap, just curious, will anyone be supporting the development of Fairbrix or you will be doing the development of Litecoin + Fairbrix?

A somewhat boring and formalistic question, but does Litecoin "sorta-officially" supersede Fairbrix (in the sense of, would efforts still be spared to organize infrastructure for fairbrix, or would said efforts be completely redirected to the benefit of Litecoin)?

I will give support to Fairbrix as long as there is still interest in Fairbrix. I purposely tried not to position this as a replacement to Fairbrix because I wanted to give Fairbrix a fair chance. But if all Fairbrix miners switch over to Litecoin, then there will be no reason for supporting Fairbrix anymore. I guess we'll see.

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
coblee
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October 09, 2011, 10:47:31 AM
 #16

Here's a windows client I built just now:
   https://github.com/downloads/coblee/litecoin/litecoin-windows-client-10-09-2011.zip

Unfortunately, I'm not a windows guy. I built this on a WinXP running in a virtual machine. And I tried my best to include the necessary dlls and such. It works for me, but let me know if you have trouble.

Do people need a download that has the miner also?

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
coblee
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October 09, 2011, 10:58:21 AM
 #17

If anyone wants some free testnet litecoins to play around with, post your address. I need to go now, so I will send out the coins later.

FYI, testnet addresses (like Bitcoin) start with m or n like mmhPCN9hi71wHw5aJmJCogA11HZ84U7c89
For the actual release, Litecoin addresses will start with an L.

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
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October 09, 2011, 11:11:23 AM
 #18

Here's a windows client I built just now:
   https://github.com/downloads/coblee/litecoin/litecoin-windows-client-10-09-2011.zip

Unfortunately, I'm not a windows guy. I built this on a WinXP running in a virtual machine. And I tried my best to include the necessary dlls and such. It works for me, but let me know if you have trouble.

Do people need a download that has the miner also?

Just to make sure I understand, this download includes a miner within the GUI app?
If so, then that's good enough for me, I don't need a standalone command line miner.

If no, then yes, miner please.

Please do not pm me, use ron@mastercoin.org instead
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coblee
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October 09, 2011, 11:17:15 AM
 #19

Here's a windows client I built just now:
   https://github.com/downloads/coblee/litecoin/litecoin-windows-client-10-09-2011.zip

Unfortunately, I'm not a windows guy. I built this on a WinXP running in a virtual machine. And I tried my best to include the necessary dlls and such. It works for me, but let me know if you have trouble.

Do people need a download that has the miner also?

Just to make sure I understand, this download includes a miner within the GUI app?
If so, then that's good enough for me, I don't need a standalone command line miner.

If no, then yes, miner please.

If you put "gen=1" in your litecoin.conf file, it will mine for you.

Litecoin: http://litecoin.org - LhK2kQwiaAvhjWY799cZvMyYwnQAcxkarr
Casascius physical bitcoins database: http://casascius.appspot.com/
ripper234
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October 09, 2011, 11:19:27 AM
 #20

Here's a windows client I built just now:
   https://github.com/downloads/coblee/litecoin/litecoin-windows-client-10-09-2011.zip

Unfortunately, I'm not a windows guy. I built this on a WinXP running in a virtual machine. And I tried my best to include the necessary dlls and such. It works for me, but let me know if you have trouble.

Do people need a download that has the miner also?

Just to make sure I understand, this download includes a miner within the GUI app?
If so, then that's good enough for me, I don't need a standalone command line miner.

If no, then yes, miner please.

If you put "gen=1" in your litecoin.conf file, it will mine for you.

We will see statistics like hashrate, or any other confirmation that it's mining? This output from Tenebrix is very useful:



[2011-10-08 12:11:24] thread 2: 7554 hashes, 1.54 khash/sec
[2011-10-08 12:11:27] thread 0: 7518 hashes, 1.53 khash/sec
[2011-10-08 12:11:28] thread 1: 7373 hashes, 1.51 khash/sec
[2011-10-08 12:11:28] thread 3: 7390 hashes, 1.51 khash/sec
[2011-10-08 12:11:29] thread 2: 7554 hashes, 1.48 khash/sec


In second thought, I might prefer a similar cmd-line miner.

Please do not pm me, use ron@mastercoin.org instead
Mastercoin Executive Director
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