CosmWasm

Calix Chain runs wasmd v0.55.0 alongside the EVM, enabling CosmWasm smart contracts with IBC v10 support. Both CW20 fungible tokens and CW721 NFTs are supported out of the box.

Key Facts

CW20 Token — Instantiate Message

Standard CW20 instantiation payload:

{
  "name": "My Token",
  "symbol": "MTK",
  "decimals": 6,
  "initial_balances": [
    { "address": "calix1youraddress...", "amount": "1000000000" }
  ],
  "mint": { "minter": "calix1youraddress..." }
}

CW721 NFT — Instantiate Message

{
  "name": "My NFT Collection",
  "symbol": "MNFT",
  "minter": "calix1youraddress..."
}

Querying Contract State

Use the Cosmos REST API to read CosmWasm contract state:

curl "https://calixchain.io/rpc/cosmwasm/wasm/v1/contract/<ADDRESS>/smart/BASE64_QUERY"

IBC from CosmWasm

Contracts can initiate IBC transfers by implementing the IBCHandler interface. The contract receives callbacks on packet acknowledgement and timeout. Active IBC channels will be listed on Calix Scan at mainnet launch.