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Reactive Contracts Image

Overview​

Reactive contracts are event-driven smart contracts for cross-chain, on-chain automation. They subscribe to event logs across EVM chains, execute Solidity logic when matching events occur, and trigger cross-chain callback transactions.

Deployment​

Reactive contracts are deployed to Reactive Network like any standard smart contract. Once deployed, the system contract delivers event logs to the contract's react() function and processes callback requests.

Verifying Reactive Contracts​

Contracts can be verified during or after deployment using the Sourcify endpoint. Sourcify is a decentralized verification service that matches deployed bytecode with source code, making contracts auditable and transparent.

Verify After Deployment​

forge verify-contract \
--verifier sourcify \
--chain-id $CHAIN_ID \
$CONTRACT_ADDR $CONTRACT_NAME

Replace:

  • $CHAIN_ID → 1597 (Reactive Mainnet) or 5318007 (Lasna Testnet)
  • $CONTRACT_ADDR → deployed contract address
  • $CONTRACT_NAME → contract name (e.g. MyContract)

Verify on Deployment​

forge create \
--verifier sourcify \
--verify \
--chain-id $CHAIN_ID \
--private-key $PRIVATE_KEY \
$PATH

Replace:

  • $CHAIN_ID → 1597 (Reactive Mainnet) or 5318007 (Lasna Testnet)
  • $PATH → e.g. src/MyContract.sol:MyContract
  • $PRIVATE_KEY → deployer key

Example:

forge create \
  --broadcast \
  --rpc-url $REACTIVE_RPC_URL \
  --private-key $REACTIVE_PRIVATE_KEY \
  --chain-id $REACTIVE_CHAIN_ID \
  --value 0.01ether \
  --verify \
  --verifier sourcify \
  src/.../MyContract.sol:MyContract \
  --constructor-args \
    $ARGUMENT_1 \
    $ARGUMENT_2 \
    $ARGUMENT_3 \
    # ...add more as needed
Broadcast Error

If you encounter the error below, your Foundry version doesn't expect the --broadcast flag for forge create. Remove --broadcast and retry.

error: unexpected argument '--broadcast' found