Callisto Network

This is a temporary Callisto.Network web page. The main goal of this page is to represent links and useful info about the stage of Callisto.Network development until the official launch of Callisto Mainnet.

Callisto Network description

Callisto Network is a blockchain platform with its own cryptocurrency (CLO) that is based on Ethereum protocol, so any Callisto improvements can be applied to Ethereum Classic.

Callisto is NOT a testnet or a hardfork of Ethereum Classic. Callisto Network is developed by Ethereum Commonwealth, one of three ETC development teams.

Callisto Airdrop

A snapshot of Ethereum Classic blockchain will be made at block 5500000 of ETC network. Each address that had ETC at its balance at the moment of block 5500000 will receive CLO in 1:1 ratio. Callisto mainnet will NOT be launched immediately after the balances snapshot. Callisto Testnet 2.0 will be launched after the snapshot of ETC balances.

It is strongly recommended to withdraw ETC from exchanges for guaranteed CLO receiving. ClassicEtherWallet will support Callisto network as soon as the mainnet will be launched.

Technically, every exchange will receive CLO at the moment of mainnet launch. Make sure that there are two options for exchanges: (1) support Callisto and grant to users or (2) hold it for themselves.

Callisto fundamentals

  1. Smart-contract ecosystem security
  2. Scalability of ETC & CLO networks
  3. New protocol-level enhancements

1. Security: The main problem of Ethereum is that even a single mistake in a certain smart-contract can lead to disastrous consequences for the whole ecosystem. Unfortunately, professional audit of a smart-contract is relatively expensive. As a result, many developers neglect it and eventually the entire ecosystem is saturated with a huge number of insecure contracts. Let me remind TheDAO hack, Parity Multisig first hack, Parity Multisig second hack, ERC20 token standard insecurity (still not fixed).

Callisto will address this problem by introducing an "Official Smart-contract auditing department of Ethereum Commonwealth". Smart-contract auditors will be paid at protocol level (analogue of smart-contract treasury), thus auditing will be completely free for smart-contract developers. Callisto & Ethereum Classic will be the only platform with built-in security enhancements mechanism.

2. Scalability of ETC & CLO: We do not plan to invent our own mechanisms of transactions relaying and sidechain implementations. We are looking forwards at crosschain-relation mechanisms of 3d generation blockchains (such as and AION).It is planned to improve the scalability of ETC & CLO with already-existing mechanics that prove to be effective. EOS and AION are still in development, so we are currently in researching stage.

3. Protocol-level enhancements: ETC community is very conservative. Some of the ETC improvements will come out at CLO network regardless of whether it will be accepted by two other development teams of ETC or not. For example: cold staking protocol and on-chain governance system.

Ethereum Commonwealth will continue ETC & CLO development.

Read the whitepaper for more information.


We are waiting for exchanges to respond. We have already warned most exchanges (see the list)

These exchanges has already announced their positions:



These wallets will support Callisto Network at the time the mainnet is launched:

Any wallet that allows you to export your account is also compatible with Callisto.

Wallet compatibility does not guarantee that the wallet will support Callisto, but you can always export your account and use it with a wallet that supports Callisto Network.