View source for Binance smart chain

{{:box-round|title= Binance smart chain & Chainlink|1=

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===Quick take: Binance smart chain===
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<h2>Supported Chainlink services on Binance smart chain</h2>
{| style="table-layout: fixed; width: 350px"
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| style="text-align:center; width: 70px; border-style: solid; border-width: 3px; background-color:#F0F6F9; color:#ffffff; | [[File:Chainlink feeds.png|center|frameless|40x40px | link=market_&_data_feeds]]
| style="text-align:center; width: 70px; border-style: solid; border-width: 3px; background-color:#F0F6F9; color:#ffffff; | [[File:Chainlink_vrf.png|center|frameless|40x40px | link=VRF]]
| style="text-align:center; width: 70px; border-style: solid; border-width: 3px; background-color:#F0F6F9; color:#ffffff; | [[File:Chainlink_keepers.png|center|frameless|40x40px | link=Keepers]]
| style="text-align:center; width: 70px; border-style: solid; border-width: 3px; background-color:#F0F6F9; color:#ffffff; | [[File:PoR 01.png|center|frameless|40x40px | link=PoR]]
| style="text-align:center; width: 70px; border-style: solid; border-width: 3px; background-color:#F0F6F9; color:#ffffff; | [[File:Chainlink ccip unsupported.png|center|frameless|40x40px | link=CCIP]]
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<h2>LINK Token Address - Binance Smart Chain</h2>
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! style="word-wrap: break-word; width: 300px; border-style: solid; border-width: 3px; font-size:14px; font-weight:bold; font-family:Arial, Helvetica, sans-serif !important; background-color:#dceaea; color:#ffffff;" | <big>'''[https://bscscan.com/token/0x404460c6a5ede2d891e8297795264fde62adbb75 0x404460c6a5ede2d891e8297795264fde62adbb75]'''</big>
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<h2>Developer tools</h2>

* <big>[https://wiki.dextrac.com/index.php/Ethereum_RPC_endpoint Ethereum RPC Endpoint Documentation]</big>
** Directions on how to deploy an Binance Smart Chain node for your Chainlink node's RPC connectivity
* <big>[https://wiki.dextrac.com/index.php/Ethereum_env Ethereum Chainlink Node Environment Variables]</big>
** Environment variables specific to Binance Smart Chain
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<h2>In depth</h2>
BNB Chain was created via a hard fork, or permanent divergence, of the Go Ethereum protocol (Geth). While it is quite similar to [[Ethereum]], there are a few significant differences. <ref>https://blog.chain.link/how-to-create-a-bep-20-token/</ref>

The most notable difference is that BNB Chain uses a different consensus mechanism.BNB Chain uses 21 validators, which take turns producing blocks. These validators are backed by delegators who stake BNB, the native coin of BNB Chain. This consensus mechanism is known as Proof of Staked Authority (PoSA). Validators are chosen based on the amount staked, and the top 21 candidates are elected to validate.<ref>https://blog.chain.link/how-to-create-a-bep-20-token/</ref>

Given that the BNB Chain chain was created via a fork of Geth, it is EVM-compatible. This means you can deploy the same contracts on BNB Chain as on Ethereum <ref>https://blog.chain.link/how-to-create-a-bep-20-token/</ref>
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<h2>Timeline</h2>
* '''11 Mar 22.''' [https://twitter.com/chainlink/status/1501967870619635739 Chainlink] brings [[VRF|VRF v2]] to [https://twitter.com/BNBCHAIN Binance BNB chain]. Read the full BNB announcement [https://www.bnbchain.world/en/blog/chainlink-vrf-v2-is-live-on-bnbchain/ HERE].
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* '''07 Dec 21.''' Chainlink [[Keepers]] go live on mainnet. Read the official announcement [https://www.bnbchain.world/zh/blog/chainlink-keepers-now-live-on-binance-smart-chain-for-securely-automating-smart-contract-devops/ HERE].
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* '''28 Apr 21.''' Chainlink [[VRF]] goes live on mainnet.  Read the announcement [https://www.bnbchain.world/en/blog/chainlink-vrf-is-live-on-binance-smart-chain-bringing-verifiable-randomness-to-bsc-developers/ HERE]. 
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* '''10 Dec 20.''' Binance Smart Chain integrates Chainlink's decentralized oracle network on its mainnet.  Read the announcement [https://www.binance.com/en/blog/chain/new-on-binance-smart-chain-chainlink-oracles-421499824684901349 HERE].
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* '''23 Jul 20.''' Binance Smart Chain (BNB) integrates Chainlink’s oracle solution on testnet.  Read the announcement [https://www.bnbchain.world/en/blog/binance-smart-chain-successfully-integrated-chainlinks-oracle-solution-for-building-defi/ HERE]. 
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<h2>Developer tools</h2>

* <big>[https://wiki.dextrac.com/index.php/BinanceSmartChain_RPC_endpoint Binance Smart Chain RPC Endpoint Documentation]</big>
** Directions on how to deploy an Binance Smart Chain node for your Chainlink node's RPC connectivity
* <big>[https://wiki.dextrac.com/index.php/BinanceSmartChain_env Binance Smart Chain Chainlink Node Environment Variables]</big>
** Environment variables specific to Binance Smart Chain Mainnet

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