What is Celer Network (CELR)?

Celer fundamentally changes how multi-blockchain dApps are built and used. Instead of deploying multiple isolated copies of smart contracts on different blockchains, developers can now build inter-chain-native dApps with efficient liquidity utilization, coherent application logic, and shared states. Users of Celer-enabled dApps will enjoy the benefits of a diverse multi-blockchain ecosystem with the simplicity of a single-transaction UX, without complicated manual interactions across multiple blockchains.

Celer uses smart contracts that are deployed on each chain paired with the State Guardian Network, a Tendermint-based blockchain, in order to enable seamless multi-blockchain interoperability. To send a message or invoke a smart contract function cross-chain, a user or a dApp will first send their intention as a message with a structured header and arbitrary binary payload to a Message Bus smart contract on the source chain. Then the validator, the State Guardian Network, will first reach a consensus on the existence of such a message, and concurrently generate a stake-weighed multi-signature attestation. This attestation then is relayed to the destination via an Executor subscribing to the message. On the destination chain, the same Message Bus contract exists to check the validity of the message and triggers the corresponding logic associated with the message either immediately or after a timeout.