The Foundation is committed to promoting community agreement regarding the difficult decisions of forks. We will now concentrate our efforts and means on the chain, which is now known as ETH (ie the forked chain). We acknowledge this. Ethereum developers can compose code for other blockchains that adhere to the same consensus protocols. We have testnets, private chains, consortiums, offshoots, as well as public and private chains, and have never been opposed to any of them.
All users who held ETH prior to block 1920000 now have both ETH and ETC from the forked chain. This is a collective effort which keeps the chain alive without a fork. Users are advised to avoid using most Ethereum client defaults, including those developed by the Foundation and third parties (eg Parity); if they are provided a choice at a branch, they should choose the ETH chain. To use Mist, select the interface and then click “Next”, followed by “Yes”. Clicking on this option will direct you to this thread.
If users are interested in any aspect of their ETC, like creating and using applications, exchanging assets, or anything else, they are encouraged to do so. The split contract address is 0xaBbb6bEbFA05aA13e908EaA492Bd7a8343760477. To avoid replay attacks, users should move their ETC to a different wallet. We also encourage the ETC community to consider initiating an additional hard fork to modify transaction formats and prevent replay attacks. Until ETH and ETC are only valid once, unless and until that happens, users should manage their funds through separate wallets.
To use the splitter contract, go to the Ethereum Wallet, click on Contracts -> View. Copy the ABI and address from the etherscan link above, and then click to sign the contract. Next, go to the Contracts Tab, select “Write to contract” and select the “Split” function. You will be asked to enter two addresses; the first is where the ETH should be sent (you can use the same address you are sending from), and the second is where the ETC should be sent. We recommend first trying it with a small amount of ether to make sure it works, before increasing the amount. You can use the Classic Ethereum explorer here to verify that ETC balances are transferred. The community has also provided a more detailed guide here.