Celer Network is the most advanced layer-2 scaling platform to build fast, easy-to-use, low-cost and secure blockchain applications at internet scale through innovations in off-chain scaling techniques and incentive-aligned cryptoeconomics.

Download Whitepaper Core Architecture


Layered architecture with clear abstractions and interfaces. Reduces complexities in the system design, development and maintenance. Enables rapid evolution of each individual component.


Development framework and runtime for off-chain enabled applications. Provides common design patterns, and handles the operation, storage, tracking, and dispute of off-chain states.


Provably optimal value transfer routing with transparent channel balancing. 15X higher throughput compared to state-of-the-art solutions. Fully decentralized with high failure resilience.


Generalized state channel and sidechain suite. Supports fast state transitions with generic dependency DAG on networked channels. Flexible constructs to maximize liquidity utilization.


Cryptoeconomic model that provides network effect, stable liquidity, and high availability for the ecosystem. Includes proof of liquidity commitment, liquidity backing auction, and state guardian network.

Proof of Liquidity Commitment (PoLC)

PoLC is a virtual mining process that acquires abundant liquidity for the off-chain ecosystem. Participants commit (lock) their idle liquidity (e.g., ETH) to a “dumb box” called Collateral Commitment Contract for a certain period of time with CELR token rewarded.

Liquidity Backing Auction (LiBA)

LiBA enables off-chain service providers to solicit liquidity through “crowd lending”. Lender priorities are determined by the interest rate, the amount of provisioned liquidity, and the amount of staked CELR token (indicating their past contributions to the ecosystem).

State Guardian Network (SGN)

SGN is a special compact sidechain that guards the states when users are offline so that the users’ states are always available for dispute; and provides connectivity oracle services to simply the on-chain dispute process. Guardians need to stake their CELR into SGN to earn guarding opportunities and service fees from the users.


H1 2019

  • State Channel Network: Develop all features of CelerPay and CelerApp contracts, and essential features off-chain CelerNode. Launch Celer state channel network public testnet.

  • State Guardian Network: Initial architectural design and proof-of-concept implementation.

  • Liquidity Backing: Develop PoLC and LiBA smart contracts.

H2 2019

  • State Channel Network: Launch and operate CelerPay and CelerApp contracts and Ethereum mainnet. Launch and operate single-OSP state channel network in production. Release iOS and Android apps with full Celer channel integration.

  • State Guardian Network: Complete architectural design. Develop basic features of the Ethereum-based mainchain contracts and the Tendermint-based sidechain system.

  • Liquidity Backing: PoLC and LiBA testnet launch.

H1 2020

  • State Channel Network: Fully open source Celer state channel implementation and documentation. Launch multi-OSP state channel network with multi-hop routing. Grow the mobile app ecosystem powered by Celer state channels.

  • State Guardian Network: Launch alpha testnet and make improvements on the essential features.

  • Rollup Sidechain: Design and implement optimistic rollup contracts and PoA-rollup EVM-compatible sidechain.

  • Liquidity Backing: Improve PoLC and LiBA contracts.

H2 2020

  • State Channel Network: Continuously grow Celer state channel network and mobile app ecosystem. Enhance production features and community support.

  • State Guardian Network: Develop advanced features and enhance overall system reliability. Launch beta testnet, followed by mainnet launch.

  • Rollup Sidechain: Launch PoA-rollup EVM-compatible sidechain testnet. Continue development of DPoS integration and parallel sidechain scale-out mechanism.

  • Liquidity Backing: PoLC and LiBA mainnet launch.