This exchange should not be listing ETH as its first funding currency (eg here https://bitcointalk.org/index.php?topic=5101680.0).

ETH withdrawals have been disabled for weeks.  Vague "market" reasons given.  There are no remotely liquid ETH markets on either its v1 or v2 sites.

How will you return the ETH? Make it something I can tweet positively about dude.

Ok so you did mean kilowatts (KW).  Yes, you've got it.

New explorer live at http://explorer.chain2.org/

What do you mean? Can you clarify?

Faucet currently offering 1 CTWO

http://faucet.chain2.org/

The research paper has been updated.  The constant in section 3.3 is now derived rather than just referencing simulation results. Also various other clarifications.

https://github.com/chain2/chain2/blob/master/specifications/rtt.pdf

Yeah, I guess I have to solve that problem too.  Do I have to do everything myself? 

Someday it might have a majority. So maybe you should mine some now, just in case.

If there is a reorg, just mine on top of it and be glad you didn't waste any resources you couldn't afford to lose, or accept ctwo in exchange for anything of value.

Official binaries are now posted here:

https://github.com/chain2/chain2/releases/tag/v0.11L


The signature in SHA256SUMS.asc is with the same key I used to authenticate all Bitcoin XT releases since 2016,  fingerprint = 8F6E DE3A 88F8 6BC6 F982  55D7 F5D9 9379 1A77 8012

Hi Daddygogo, are you looking for binaries? Working on that. Feel free to join us at https://discord.gg/pydVnNh

Thanks MCP!!

Lol no, graphics and front-end are NOT a strength of mine. If you don't feel like pushing pixels either, I'd say just go minimalist (text) for now!

No explorer yet.  It would be great if someone wanted to put one up!

The simplest thing is to restart chain2 with -usecashaddr=0.

Functions to accept multiple formats or translate between formats could be added to the RPC.

Sometimes I've used this python-bitcoinlib script to get a legacy address from a pubkey (you can get the pubkey from chain2 using validateaddress):

python pubkey-to-mainnet-address.py <pubkey>

#!/usr/bin/env python
import sys
import bitcoin
from bitcoin.core import Hash160, x, lx
from bitcoin.wallet import CBitcoinAddress
def main():
    bitcoin.SelectParams('mainnet')
    print(CBitcoinAddress.from_bytes(Hash160(x(sys.argv[1])),0))
if __name__ == '__main__':
    main()

Hey Twinkledoe thanks!  Lets see if it can survive. For a SHA256 coin that would be valuable

Two successive GBT's have different targets and nbits. Target increases until a block is found. nbits won't be used until the next block and depends on this block's timestamp:


getblocktemplate

{
...
"previousblockhash": "0000000000093658813abd9f0c97b05cb5e3d23594b17c8abf27919312158af3",
"target": "0000000000b4d61573b036be175f295d6cd1e1d9c839e58cc85db34cd0760100",
"mintime": 1571004547,
"curtime": 1571005288,
"bits": "1b2a1d9c",
"height": 7
...
}



getblocktemplate

{
...
"previousblockhash": "0000000000093658813abd9f0c97b05cb5e3d23594b17c8abf27919312158af3",
"target": "000000000124ab302ef78bfb86628340481f85b4f0e6808b8ef587995ef7ced8",
"mintime": 1571004547,
"curtime": 1571005363,
"bits": "1b4b0ce2",
"height": 7
}

How the chain looks so far

block, inter-block time, difficulty, target
0,1570992534,1,1d00ffff
1,9746,1,1d00ffff
2,240,183.9942093834309,1c01642e
3,661,77.56481858194326,1c034ce8
4,500,174.547270514061,1c017775
5,540,247.5244544770504,1c0108c3

chain2 is an experimental cryptocurrency.  The main purpose of chain2 is to explore the performance of its difficulty adjustment algorithm: Real-Time Targeting (RTT). As a pure SHA256 PoW altcoin, chain2 competes for a share of the biggest pool of hashrate on Earth.

Miners and nodes wanted. This might be fun.


Download
https://github.com/chain2/chain2/releases


chain2 Mining - IMPORTANT

The RTT target starts low (difficulty high) and increases (decreases) during the block, depending the timestamp of the block being mined.  The next block's resulting nominal target is also included in the block template. It also rises with time, but is not the same as the actual target (see research paper).  Unmodified miners that rely on the template difficulty will fail to submit some valid blocks.

Slight (and hacky) modifications to pool software allow it to mine chain2 in a reasonable way, with no stratum client modifications needed:
 - ckpool https://bitbucket.org/dgenr8/ckpool/commits/26bfbcf5dd02f81094f92cbdda21802c3e132a64
 - yiimp https://github.com/dgenr8/yiimp-1/commits/next

The incentives established by this algorithm do not favor inaccurate timestamps, therefore using the timestamp as a nonce is not recommended.

chain2 lends itself to optimized mining pools and clients which understand RTT.  Please work on this if you can! An internal CPU miner is included for reference, but of course it is unusably slow.

Pools
https://mcpool.chain2.org/           -a sha256 -o stratum+tcp://stratum.mcpool.chain2.org:3330 -u -p c=CTWO

chain2 Specifications

- PoW algorithm: SHA256D
- Difficulty adjustment algorithm: RTT
   RTT research paper: https://github.com/chain2/chain2/blob/master/specifications/rtt.pdf
   RTT implementation: https://github.com/chain2/chain2/pull/6
- Starting difficulty: 1
- Starting target: 0x1d00ffff
- Block time: 10 minutes
- Block reward: 50 ctwo
- Block reward halving schedule: every 210,000 blocks
- Total coin supply: 21M
- Default P2P port: 9393
- Default RPC port: 9392
- Address format: cashaddr with "ctwo:" prefix (legacy bitcoin mode available)

- Pre-mine: No
- Founders reward: No
- Instamine: Not possible
- ICO: No
- Masternodes: No
- Segwit: No
- Finalization: No
- Genesis coinbase output script: OP_FALSE


BEWARE
If you somehow manage to buy ctwo from someone right now, you are extremely likely to lose money.  Chaotic reorganizations are quite possible. ctwo should never be worth anything unless it gains a meaningful level of stable miner support compared to BTC.


chain2 Consensus Rules:

    Bitcoin Cash rules as of 14 November, 2018 (PRE-SPLIT)
      (BIP143, 32MB blocks, etc ...)
    + Real Time Targeting
    + CHECKDATASIG activates at 75% support over 90 days (BIP135)
           * Activated 2020-07-29 12:14:35
    + Gradual max block size adjustment by miners (BIP100)


Reference implementation source code: https://github.com/chain2/chain2

Markets:
 - https://freiexchange.com/market/CTWO/BTC

Resources:
 - Explorer http://explorer.chain2.org
 - Explorer http://iquidus.chain2.org
 - Faucet http://faucet.chain2.org
 - Chat https://discord.gg/pydVnNh

Many BTC, BCH, and BSV applications are compatible with chain2 or could be made compatible with slight modifications.
Additional compatible implementations of chain2 are of course possible. PR's are also welcome to the chain2 reference implementation.


Consumer/Investor Disclosures

 - Cryptocurrency is a rapidly evolving technology.
 - Cryptocurrency has historically been EXTREMELY VOLATILE.
 - Transfers of ctwo are NON-REVERSIBLE.
 - Mined or transferred ctwo tokens may disappear in chain reorganizations.
 - The chain2 software is provided AS IS, WITHOUT GUARANTEE or WARRANTY.