Overview

The Reactive Network reads event streams and enables transactions across different ecosystems. An Origin acts as an event log provider, delivering events to reactive contracts within the Reactive Network. A Destination is the ecosystem where the actual state transition (transaction) takes place.

Origins and destinations don't have to be the same. Reactive contracts can be configured to work with multiple origins, and the system allows for multiple destinations, enabling conditional selection of which destination ecosystem will be used.

Callback Proxy Address

CALLBACK_PROXY_ADDR ensures the validity of a callback transaction by checking two key conditions:

• Reactive Network Signature: Verifies that the callback is initiated by the Reactive Network by matching the sender address to CALLBACK_PROXY_ADDR.

• RVM ID Verification: Confirms that the callback originates from the correct reactive contract by checking the RVM ID in the transaction payload.

Chains

Callbacks

Not all origin chains are compatible as destination chains. Please refer to the table below before implementing callbacks.

Chain	Origin	Destination	Chain ID	Callback Proxy Address	Recommended RPC URL
Ethereum Sepolia	✅	✅	11155111	0x33Bbb7D0a2F1029550B0e91f653c4055DC9F4Dd8	Find on Chainlist
Ethereum Mainnet	✅	➖	1	➖	Find on Chainlist
Avalanche C-Chain	✅	✅	43114	0x76DdEc79A96e5bf05565dA4016C6B027a87Dd8F0	Find on Chainlist
Arbitrum One	✅	➖	42161	➖	Find on Chainlist
Manta Pacific	✅	✅	169	0x9299472A6399Fd1027ebF067571Eb3e3D7837FC4	Find on Chainlist
Base Chain	✅	✅	8453	0x4730c58FDA9d78f60c987039aEaB7d261aAd942E	Find on Chainlist
Binance Smart Chain	✅	➖	56	➖	Find on Chainlist
Polygon PoS	✅	➖	137	➖	Find on Chainlist
Polygon zkEVM	➖	➖	1101	➖	Find on Chainlist
opBNB Mainnet	➖	➖	204	➖	Find on Chainlist
Kopli Testnet	✅	✅	5318008	0x0000000000000000000000000000000000FFFFFF	https://kopli-rpc.rnk.dev/