LINK tokens are used to pay node operators for retrieving data for smart contracts and also for deposits placed by node operators as required by contract creators. The smallest denomination of LINK is called a Juel, and 1,000,000,000,000,000,000 (1e18) Juels are equal to 1 LINK. This is similar to Wei, which is the smallest denomination of ETH.

The LINK token is an ERC677 token that inherits functionality from the ERC20 token standard and allows token transfers to contain a data payload. Read more about the ERC677 transferAndCall token standard.

Networks:

• Ethereum
• BNB Chain
• Polygon (Matic)
• RSK
• Gnosis Chain (xDai)
• Avalanche
• Fantom
• Arbitrum
• HECO Chain
• Optimism
• Harmony
• Moonriver
• Moonbeam
• Metis
• Klaytn

Ethereum

Ethereum Mainnet

Goerli testnet

Testnet LINK is available at faucets.chain.link. Testnet ETH is available at goerlifaucet.com or the faucets listed at faucetlink.to/goerli.

BNB Chain

BNB Chain mainnet

BNB is used to pay for transactions on the BNB Chain mainnet.

BNB Chain testnet

Testnet LINK is available at faucets.chain.link. Testnet BNB is availalbe at testnet.binance.org/faucet-smart.

Polygon (Matic)

Polygon mainnet

MATIC is used to pay for transactions on Polygon. You can use the Polygon Bridge to transfer tokens to Polygon mainnet and then use Polygon Gas Swap to swap supported tokens to MATIC.

Mumbai testnet

Testnet LINK is available at faucets.chain.link. Testnet MATIC is available at the Polygon faucet.

RSK

RSK mainnet

RBTC is used to pay for transactions on RSK mainnet. Use RSK’s built in PowPeg to transfer BTC to RSK mainnet as RBTC. You can use the RSK bridge to send LINK from Ethereum Mainnet to RSK.

Gnosis Chain (xDai)

Gnosis Chain mainnet

xDAI is used to pay for transactions on Gnosis Chain mainnet. Use the xDai Bridge to send DAI from Ethereum Mainnet to Gnosis Chain and convert it to xDAI. Use OmniBridge to send LINK from Ethereum Mainnet to Gnosis Chain.

Avalanche

Avalanche mainnet

AVAX is the token you use to pay for transactions on Avalanche mainnet. Use the Avalanche Bridge to transfer LINK from Ethereum Mainnet to Avalanche.

Fuji testnet

Testnet LINK is available at faucets.chain.link. Testnet AVAX is available at faucet.avax.network.

Fantom

Fantom mainnet

FTM is used to pay for transactions on Fantom Mainnet. Use bridge.multichain.org to transfer FTM and LINK to Fantom mainnet.

Fantom testnet

Testnet LINK is available at faucets.chain.link. Testnet FTM is available at faucet.fantom.network.

Arbitrum

Arbitrum mainnet

ETH is used to pay for transactions on the Arbitrum mainnet. You can use the Arbitrum Bridge to transfer ETH and LINK to from Ethereum Mainnet to Arbitrum.

Arbitrum Rinkeby testnet

Testnet LINK is available at faucets.chain.link. Testnet ETH is available at faucet.rinkeby.io.

HECO Chain

HECO Chain mainnet

Optimism

Optimism mainnet

ETH is used to pay for transactions on Optimism. Use the Optimism Bridge to transfer ETH and LINK from Ethereum Mainnet to Optimism mainnet.

Optimism Goerli testnet

Testnet ETH is used to pay for transactions on Optimism. Use the Optimism Bridge to transfer testnet ETH and LINK from Ethereum Goerli to Optimistim Goerli. Select Optimism Goerli in your wallet to access the Optimism Goerli bridge.

Harmony

Harmony mainnet

ONE is used to pay for transactions on Harmony mainnet. You can use the Harmony Bridge to transfer ONE and LINK token from Ethereum Mainnet to Harmony mainnet.

Moonriver

Moonriver mainnet

MOVR is used to pay transaction fees on Moonriver mainnet. You can use bridge.multichain.org to transfer LINK to Moonriver mainnet.

Moonbeam

Moonbeam mainnet

GLMR is used to pay transaction fees on Moonbeam mainnet.

Metis

Andromeda mainnet

METIS is the currency that you use to pay for transactions on Metis mainnet. You can use the Metis Bridge to transfer METIS and LINK from Ethereum Mainnet to Metis mainnet.

Klaytn

Baobab testnet

KLAY is the currency that you use to pay for transactions on Klaytn testnet. Testnet LINK is available from facuets.chain.link. Use the KLAY Faucet to obtain testnet KLAY.