Comparison of cryptocurrencies

This article aims to list relevant cryptocurrencies, even those too minor to have their own wiki entry. See also Category:Alternative cryptocurrencies

It is based on this thread.

Currencies

The order / grouping of these coins are still TBD. I propose a grouping of Major, Minor and New by an arbitrary market cap limit. This can be done once the market caps of the alts are known.

Major

Bitcoin (BTC)

• http://bitcoin.org/
• blocks every 10 min
• coin supply* 21 million coins will be available
• difficulty adjustment* 2016 blocks
• hashing algorithm double-SHA-256
• Initial Reward 50 coins per block
• Market Cap: $144,000,000 (Jan 5th, 2013)
• Launch Date: January 3rd, 2009

TestNet Bitcoins

• http://bitcoin.org/
• blocks every 10 min
• coin supply* 21 million coins will be available
• difficulty adjustment* 2016 blocks, or every 20 minutes[1]
• hashing algorithm double-SHA-256
• Initial Reward 50 coins per block
• Market Cap: None, coins are free
• Launch Date: February 2nd, 2011 (TestNet 3 genesis block)[2]

Namecoin (NMC)

• https://en.bitcoin.it/wiki/Namecoin
• (merged mined with BTC)
• https://github.com/vinced/namecoin
• http://namecoin.info/
• blocks every ???
• coin supply* ???? coins will be available
• difficulty adjustment ????
• hashing algorithm double-SHA-256
• Initial Reward 50 coins per block
• Market Cap: ???? BTC
• Launch Date: April 18, 2011

Litecoin (LTC)

• http://litecoin.org/
• blocks every 2.5 min
• coin supply* 82 million coins will be available
• difficulty adjustment 2016 blocks
• hashing algorithm scrypt
• Initial Reward 50coins per block
• Market Cap: ???? BTC
• Launch Date: ???

Minor

IxCoin (IXC)

• https://bitcointalk.org/index.php?topic=36701.0
• (merged mined with BTC)
• blocks every 10 min
• Coin supply* 21 million coins will be available
• difficulty adjustment 2016 blocks
• hashing algorithm SHA1
• Reward 96 coins per block

Devcoin (DEV)

• https://bitcointalk.org/index.php?topic=34586.0
• (merged mined with BTC)
• blocks every 10 min
• coin supply* constant generation coins will be available (???)
• difficulty adjustment 2016 blocks
• hashing algorithm double-SHA-256
• Reward 50,000 coins per block
• EXTRA 90% block subsidy goes to foundation

PPCoin (PPC)

• http://ppcoin.org/
• https://bitcointalk.org/index.php?topic=101820.0
• blocks every 10 min
• Coin supply* non-deterministic coins will be available
• difficulty adjustment each block
• hashing algorithm SHA-256
• Reward varies on difficulty coins per block
• EXTRA: Incorporates Proof Of Stake coin Generation, contains central checksums to kickstart the protocol
• Market Cap: ???? BTC
• Launch Date: approx August 19th, 2012 (date of its whitepaper)
  • The public design phase of this coin was very brief.

Freicoin (FRC)

• http://freico.in/
• http://www.freicoin.org/
• https://bitcointalk.org/index.php?topic=89843.0
• https://bitcointalk.org/index.php?topic=3816.0
• blocks every 10 minutes
• coin supply* 100 million coins will be available
• difficulty adjustment 2016 blocks
• hashing algorithm SHA-256
• Arithmetically decreasing reward
• EXTRA:

-- 4.89% annual demurrage
-- 80% block subsidy goes to foundation for the first 3 years (about 500 coins for each of first 161280 blocks, total 80m)
-- [u]In need of Dev work on daemon, client etc but network still running[/u]

I0coin (I0C)

• https://bitcointalk.org/index.php?topic=36425.0 ; https://github.com/kr105rlz/i0coin
• Perhaps should be moved to Dead section?

Terracoin (TRC)

• http://terracoin.org/
• blocks every 2 minutes
• coin supply* 42 million coins will be available
• difficulty adjustment 30 blocks
• hashing algorithm SHA-256
• Reward 20 coins per block

Liquidcoin (LQC)

• https://bitcointalk.org/index.php?topic=60026.0
• blocks every 10 minutes
• no cap as block subsidy has a minimum of 1 coin
• Constant difficulty of 0.5
• Coin reward drops over time

New

New in on the scene. Please put here any coins whose concept are new. If a coin is discussed for 6 months and launched yesterday, it is not new.

dead / dying / experimental / scam

• Qubic* https://bitcointalk.org/index.php?topic=112676.0
  • Qubic Forum* http://qubic.boards.net
• TimeKoin* Still alive* http://timekoin.org/* https://bitcointalk.org/index.php topic=88467.0
• BBQ BBQCoin* killed in a 51% attack* https://bitcointalk.org/index.php?topic=93437.0
• SC Solidcoin* scam?* https://en.bitcoin.it/wiki/SolidCoin ; http://solidcoin.info/
• GG Geist Geld* https://bitcointalk.org/index.php?topic=42417.0 ; https://github.com/Lolcust/GeistGeld
• TBX Tenebrix* https://bitcointalk.org/index.php?topic=45667.0 ; https://github.com/Lolcust/Tenebrix
• FBX Fairbrix* https://bitcointalk.org/index.php?topic=46528.0 ; https://github.com/coblee/Fairbrix
• CLC Coiledcoin* killed in 51% attack ; https://bitcointalk.org/index.php?topic=56675.0
• RUC Rucoin* https://www.rucoin.org/ ; https://bitcointalk.org/index.php?topic=48582.0
• MMM MMMcoin* dead