Supported Networks - Subscription Method

Chainlink VRF allows you to integrate provably fair and verifiably random data in your smart contract.

For implementation details, read Introduction to Chainlink VRF.

Coordinator parameters

These parameters are configured in the coordinator contract. You can view these values by running getConfig on the coordinator or by viewing the coordinator contracts in a blockchain explorer.

  • uint16 minimumRequestConfirmations: The minimum number of confirmation blocks on VRF requests before oracles respond
  • uint32 maxGasLimit: The maximum gas limit supported for a fulfillRandomWords callback.
  • uint32 stalenessSeconds: How long the coordinator waits until we consider the ETH/LINK price used for converting gas costs to LINK is stale and use fallbackWeiPerUnitLink
  • uint32 gasAfterPaymentCalculation: How much gas is used outside of the payment calculation. This covers the additional operations required to decrement the subscription balance and increment the balance for the oracle that handled the request.

Fee parameters

Fee parameters are configured in the coordinator contract and specify the premium you pay per request in addition to the gas cost for the transaction. You can view them by running getFeeConfig on the coordinator. The uint32 fulfillmentFlatFeeLinkPPMTier1 parameter defines the fees per request specified in millionths of LINK. The details for calculating the total transaction cost can be found here.

Configurations

VRF v2 coordinators for subscription funding are available on several networks. To see a list of coordinators for direct funding, see the Direct Funding Configurations page.

Ethereum mainnet

ItemValue
LINK Token0x514910771AF9Ca656af840dff83E8264EcF986CA
VRF Coordinator0x271682DEB8C4E0901D1a1550aD2e64D568E69909
200 gwei Key Hash0x8af398995b04c28e9951adb9721ef74c74f93e6a478f39e7e0777be13527e7ef
500 gwei Key Hash0xff8dedfbfa60af186cf3c830acbc32c05aae823045ae5ea7da1e45fbfaba4f92
1000 gwei Key Hash0x9fe0eebf5e446e3c998ec9bb19951541aee00bb90ea201ae456421a2ded86805
Premium0.25 LINK
Max Gas Limit2,500,000
Minimum Confirmations3
Maximum Confirmations200
Maximum Random Values500

Sepolia testnet

Testnet LINK and ETH are available from faucets.chain.link. Testnet ETH is also available from several public ETH faucets.

ItemValue
LINK Token0x779877A7B0D9E8603169DdbD7836e478b4624789
VRF Coordinator0x8103B0A8A00be2DDC778e6e7eaa21791Cd364625
750 gwei Key Hash0x474e34a077df58807dbe9c96d3c009b23b3c6d0cce433e59bbf5b34f823bc56c
Premium0.25 LINK
Max Gas Limit2,500,000
Minimum Confirmations3
Maximum Confirmations200
Maximum Random Values500

BNB Chain mainnet

ItemValue
LINK Token0x404460C6A5EdE2D891e8297795264fDe62ADBB75
VRF Coordinator0xc587d9053cd1118f25F645F9E08BB98c9712A4EE
200 gwei Key Hash0x114f3da0a805b6a67d6e9cd2ec746f7028f1b7376365af575cfea3550dd1aa04
500 gwei Key Hash0xba6e730de88d94a5510ae6613898bfb0c3de5d16e609c5b7da808747125506f7
1000 gwei Key Hash0x17cd473250a9a479dc7f234c64332ed4bc8af9e8ded7556aa6e66d83da49f470
Premium0.005 LINK
Max Gas Limit2,500,000
Minimum Confirmations3
Maximum Confirmations200
Maximum Random Values500

BNB Chain testnet

Testnet LINK is available from https://faucets.chain.link/bnb-chain-testnet

ItemValue
LINK Token0x84b9B910527Ad5C03A9Ca831909E21e236EA7b06
VRF Coordinator0x6A2AAd07396B36Fe02a22b33cf443582f682c82f
50 gwei Key Hash0xd4bb89654db74673a187bd804519e65e3f71a52bc55f11da7601a13dcf505314
Premium0.005 LINK
Max Gas Limit2,500,000
Minimum Confirmations3
Maximum Confirmations200
Maximum Random Values500

Polygon mainnet

ItemValue
LINK Token0xb0897686c545045aFc77CF20eC7A532E3120E0F1
VRF Coordinator0xAE975071Be8F8eE67addBC1A82488F1C24858067
200 gwei Key Hash0x6e099d640cde6de9d40ac749b4b594126b0169747122711109c9985d47751f93
500 gwei Key Hash0xcc294a196eeeb44da2888d17c0625cc88d70d9760a69d58d853ba6581a9ab0cd
1000 gwei Key Hash0xd729dc84e21ae57ffb6be0053bf2b0668aa2aaf300a2a7b2ddf7dc0bb6e875a8
Premium0.0005 LINK
Max Gas Limit2,500,000
Minimum Confirmations3
Maximum Confirmations200
Maximum Random Values500

Polygon Amoy testnet

ItemValue
LINK Token0x0fd9e8d3af1aaee056eb9e802c3a762a667b1904
VRF Coordinator0x7E10652Cb79Ba97bC1D0F38a1e8FaD8464a8a908
500 gwei Key Hash0x3f631d5ec60a0ce16203bcd6aff7ffbc423e22e452786288e172d467354304c8
Premium0.0005 LINK
Max Gas Limit2,500,000
Minimum Confirmations3
Maximum Confirmations200
Maximum Random Values500

Avalanche mainnet

ItemValue
LINK Token0x5947BB275c521040051D82396192181b413227A3
VRF Coordinator0xd5D517aBE5cF79B7e95eC98dB0f0277788aFF634
200 gwei Key Hash0x83250c5584ffa93feb6ee082981c5ebe484c865196750b39835ad4f13780435d
500 gwei Key Hash0x89630569c9567e43c4fe7b1633258df9f2531b62f2352fa721cf3162ee4ecb46
1000 gwei Key Hash0x06eb0e2ea7cca202fc7c8258397a36f33d88568d2522b37aaa3b14ff6ee1b696
Premium0.005 LINK
Max Gas Limit2,500,000
Minimum Confirmations1
Maximum Confirmations200
Maximum Random Values500

Avalanche Fuji testnet

Testnet LINK is available from https://faucets.chain.link/fuji

ItemValue
LINK Token0x0b9d5D9136855f6FEc3c0993feE6E9CE8a297846
VRF Coordinator0x2eD832Ba664535e5886b75D64C46EB9a228C2610
300 gwei Key Hash0x354d2f95da55398f44b7cff77da56283d9c6c829a4bdf1bbcaf2ad6a4d081f61
Premium0.005 LINK
Max Gas Limit2,500,000
Minimum Confirmations1
Maximum Confirmations200
Maximum Random Values500

Fantom mainnet

ItemValue
LINK Token0x6F43FF82CCA38001B6699a8AC47A2d0E66939407
VRF Coordinator0xd5D517aBE5cF79B7e95eC98dB0f0277788aFF634
4000 gwei Key Hash0xb4797e686f9a1548b9a2e8c68988d74788e0c4af5899020fb0c47784af76ddfa
10000 gwei Key Hash0x5881eea62f9876043df723cf89f0c2bb6f950da25e9dfe66995c24f919c8f8ab
20000 gwei Key Hash0x64ae04e5dba58bc08ba2d53eb33fe95bf71f5002789692fe78fb3778f16121c9
Premium0.0005 LINK
Max Gas Limit2,500,000
Minimum Confirmations1
Maximum Confirmations200
Maximum Random Values500

Fantom testnet

Testnet LINK is available from https://faucets.chain.link/fantom-testnet

ItemValue
LINK Token0xfaFedb041c0DD4fA2Dc0d87a6B0979Ee6FA7af5F
VRF Coordinator0xbd13f08b8352A3635218ab9418E340c60d6Eb418
3000 gwei Key Hash0x121a143066e0f2f08b620784af77cccb35c6242460b4a8ee251b4b416abaebd4
Premium0.0005 LINK
Max Gas Limit2,500,000
Minimum Confirmations1
Maximum Confirmations200
Maximum Random Values500

Arbitrum mainnet

ItemValue
LINK Token0xf97f4df75117a78c1A5a0DBb814Af92458539FB4
VRF Coordinator0x41034678D6C633D8a95c75e1138A360a28bA15d1
2 gwei Key Hash0x08ba8f62ff6c40a58877a106147661db43bc58dabfb814793847a839aa03367f
30 gwei Key Hash0x72d2b016bb5b62912afea355ebf33b91319f828738b111b723b78696b9847b63
150 gwei Key Hash0x68d24f9a037a649944964c2a1ebd0b2918f4a243d2a99701cc22b548cf2daff0
Premium0.005 LINK
Max Gas Limit2,500,000
Minimum Confirmations1
Maximum Confirmations200
Maximum Random Values500

Arbitrum Sepolia testnet

Testnet LINK is available from https://faucets.chain.link/arbitrum-sepolia

ItemValue
LINK Token0xb1D4538B4571d411F07960EF2838Ce337FE1E80E
VRF Coordinator0x50d47e4142598E3411aA864e08a44284e471AC6f
50 gwei Key Hash 0x027f94ff1465b3525f9fc03e9ff7d6d2c0953482246dd6ae07570c45d6631414
Premium0.005 LINK
Max Gas Limit2,500,000
Minimum Confirmations1
Maximum Confirmations200
Maximum Random Values500

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