Using Band Oracle

The repo https://github.com/harmony-one/band_oracle contains examples on how to fetch price feeds using band oracle.

There are two scenarios:

  • Fetching price feed in your javascript application code

  • Fetching price feed in your smart contract

Requesting data using BandChain.js library

โ€‹https://github.com/harmony-one/band_oracle/blob/main/main.jsโ€‹

git clone https://github.com/harmony-one/band_oracle
cd band_oracle
โ€‹
yarn
node main.js

Using BandChain data in EVM Smart Contract in Harmony

โ€‹https://github.com/harmony-one/band_oracleโ€‹

git clone https://github.com/harmony-one/band_oracle
cd band_oracle
โ€‹
yarn
export PRIVATE_KEY=place your private key here
yarn hardhat run ./scripts/deploy.js

Contract's been deployed and you can call getPrice or getMultiPrices to get actual prices. More details with code snippets are in https://docs.harmony.one/home/developers/tools/oracle-band-protocolโ€‹

Bandโ€™s StdReference contract for testnet 0xE740092E081CA7491A46C8Aa0175446e962e2A08

Mainnet contract is coming soon...