This tool sets up the Blockdaemon DVN (oracle) for an Oapp.
This is a Typescript project. Npm as package manager and node. Tested with npm v10.2.4, node 21.5.0. We recommend using nvm for node version management.
Our DVN currently supports the following chains:
| Chain | Endpoint ID | Env variable NETWORK | DVN Address |
|---|---|---|---|
| Ethereum (mainnet) | 30101 | ethereum | 0x7E65BDd15C8Db8995F80aBf0D6593b57dc8BE437 |
| Avalanche (mainnet) | 30106 | avalanche | 0xFfe42DC3927A240f3459e5ec27EAaBD88727173E |
| Polygon (mainnet) | 30109 | polygon | 0xa6F5DDBF0Bd4D03334523465439D301080574742 |
| Optimism (mainnet) | 30111 | optimism | 0x7B8a0fD9D6ae5011d5cBD3E85Ed6D5510F98c9Bf |
| Fantom (mainnet) | 30112 | fantom | 0x313328609a9C38459CaE56625FFf7F2AD6dcde3b |
| Arbitrum (mainnet) | 30110 | arbitrum | 0xddaa92ce2d2fac3f7c5eae19136e438902ab46cc |
| BNB Smart Chain (mainnet) | 30102 | bnb | 0x313328609a9c38459cae56625fff7f2ad6dcde3b |
| Base (mainnet, lzRead only) | 30184 | base | 0x41ef29f974fc9f6772654f005271c64210425391 |
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Install node 21.5.0 (using nvm:
nvm install 21.5.0 && nvm use 21.5.0) -
Install the dependencies with
npm install. -
Copy the environment variables with
cp .env.example .env. -
Populate the variables, including your Blockdaemon API Key (BLOCKDAEMON_API_KEY), the private key that you will be using to sign transactions in the form of a mnemonic (MNEMONIC), the address of your LayerZero v2 application (OAPP_ADDRESS), the network you are operating on (SOURCE_NETWORK), and the destination/target network (TARGET_NETWORK). Make sure to choose a supported network, according to the above table.
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If you need, set the message library address (MESSAGE_LIB_ADDRESS). We are using the default library. Deployed Endpoints, Message Libraries, and Executors can be consulted within LZ's official docs.
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Run the main script with
npx ts-node src/main/main.ts. The script waits two minutes before confirming a change in the oracle, to accommodate for finalization times.
A: This tool supports mainnet BD-powered DNVs: https://docs.layerzero.network/v2/developers/evm/technical-reference/dvn-addresses (BNB RPCs support to be added)