and Free Smart-Contract Security Audits

Callisto Network is a decentralized open source crypto platform based on the go-Ethereum source code with its own cryptocurrency ‘CLO’. The main goal of Callisto is to research and develop a reference implementation of a self-sustaining, self-governed and self-funded blockchain ecosystem and development environment.

Hero Art
CLO Cold Staking

First Cold Staking Coin

Cold Staking is a protocol that rewards long-term coin holders for holding their CLO coins. Cold Staking is not related to PoS nor a consensus mechanism. Cold stakers receive passive income for holding their coins.

Read more
CLO Smart Contracts

Free security audits via a fine-tuned audit process

Smart-contract hacking results in millions of dollars of lost revenue for the whole ecosystem. The Callisto Network offers a completely free service to audit professionally written smart-contracts.

Read more
On-chain governance system

Callisto Network is a reference implementation of a self-sustained, self-governed, self-funded blockchain ecosystem.

Scalability of the CLO and ETC networks

Callisto aims to establish a secure and contribution-friendly environment for further protocol development and improvements.

Financial transparency

Callisto aims for full financial transparency. Check out our financial report below.

Financial report


Up to date roadmap report

Roadmap Element
Q1 2018
  • Update ClassicMask with Callisto Network
  • Snapshot taken of the Ethereum Classic balances for a 1:1 CLO airdrop
  • Launch Testnet 2.0
  • Research the possibility of a POS and DPOS protocol implementation.
Roadmap Element
Q2 2018
  • Launch the CLO Mainnet (Est. April 15, 2018)
  • DexNS support for the Callisto protocol
  • Marketing team creation
  • Launch the explorer with advanced features such as:
    • Readable transactions including smart contracts instructions
    • Token explorer
    • Testnet support (Callisto, Ethereum, Ethereum Classic)
Roadmap Element
Q3 2018
  • Formation of the Security Department of Callisto (Solidity)
Roadmap Element
Q4 2018
  • Planned Hardfork No. 1: Cold staking implementation
Roadmap Element
Q1 2019
  • Analyze constantinople behavior for further implementation on Callisto Network Blockchain HardFork #1
  • Start researching a new monetary policy
  • Continue looking for a satisfactory IPFS to implement on Callisto Network
Roadmap Element
Q2 2019
  • Reward program will be implemented for tech writers who will write about Callisto and its technology. The rewards will depend on the quality and effort of the freelance writers. The posts - tutorials - opinions - and whatever we think will be good enough will be posted on the Callisto official forum. The best ones will be also posted on the Callisto official channels. A reward table will be implemented and Callisto will create a team that will check, verify and qualify the job and determine what will the reward be if the post accomplishes quality level.
  • Start running Web assembly on Clo test-net for further implementation.
  • We will be looking forward to increasing and improving our community with PR. For this matter, we will get Advisors on board who will let the world know about CLO.
  • 19/05 - Planned HardFork 2019 #1
Q3 2019
Roadmap Element

Security DAO Codex release
Cold Staker's Codex release

Q4 2019
Roadmap Element

Planned Hardfork No. 2: On-chain governance system


Callisto (CLO) is a minable coin with a PoW algorithm.

Technical details

Block reward

360 CLO

(10% treasury fee)

POW Algo

Dagger Hashimoto


100% compatible with

Ethereum Virtual Machine

The maximum supply:

6,500,000,000 CLO

Block reward reduction:

40% each 1,500,000 block (~250 days)

Block interval

~15 sec

Our Team

Yohan Graterol
Yohan Graterol
CEO & Main Callisto Developer

Hi, I’m a backend developer (Python and Go) with over seven years of experience. I have worked for as a Head of Engineering for three years. The cryptocurrency world is my passion.

Carlos Sampol
Carlos Sampol
CTO & Web Developer

Skilled in the Frontend development Environment with knowledge in HTML5/CSS3, Javascript (React JS) and Backend Environments with Node.js. Worked in several important startups such as Platzi and GoRead


My main specialty is information security. I’ve been an Ethereum smart-contracts developer since its first days. I created the ERC223 token standard and founded DEX ICO and the Ethereum Commonwealth. I was formerly a security auditor.

Alejo Chababo
Alejo Chababo
CMO & Head of Marketing

Hi, I have 10 years experience working in Marketing and Sales department. I worked both freelance and in company. Cryptocurrency enthusiast since 2014. I've worked in the corporate image of CIKA SRL since it was founded. 100% Committed to my work.

Yuriy Kharytoshyn
Yuriy Kharytoshyn
Head of Security Department

I’m an Information Security expert with over 18 years experience. Backend Developer (C/C++, Python, PHP, Assembler) of InfoSec related projects. Since 2016, focused on Blockchain technologies and Smart contract security. A Master of Science (M.Sc.) in Computer Science and Мathematic.

Tio Toi
Tio Toi
Head of Community

Motivated, worked as an IT project manager for over 13 years. Owner of ProffeeCa since May, 2016. Enthusiastic and loves to learn new things.

Darwin Ongko
Darwin Ongko
Callisto Community Manager & Callisto Indonesia Ambassador

I have over 8 years of experience working at a life insurance company as an agency manager for Prudential Life Assurance and 7 years at Generali Indonesia as an Agency Business Director, managing more than 4,000 people from 10 cities in Indonesia within the agency.


Raymond Koh
Raymond Koh

Our Partners

Enterprise Ethereum Alliance