In this tutorial, you'll deploy ERC721 NFT Staking smart contract by leveraging BuildBear's No-Code deployment solution.BuildBear has integrated with CookBook, providing an intuitive platform for effortless contract deployment. For more details on this integration, please refer to: <a href="https://www.buildbear.io/resources/guides-and-tutorials/Cookbook_BuildBear**">https://www.buildbear.io/resources/guides-and-tutorials/Cookbook_BuildBear</a>The NFT Staking with Infinite Rewards contract is a smart contract that allows users to stake their non-fungible tokens (NFTs) and receive a fixed number of ERC20 tokens as rewards every day. The contract is designed for use cases such as blockchain-based games, where each staked NFT rewards a certain number of lives or other in-game benefits per day.let's deploy the contract and delve into its functionalities.For those new to BuildBear, start by signing up at <a href="http://buildbear.io/">buildbear.io</a>.Upon logging in, you will be greeted by a page resembling the image below:<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_335202ab27.png" alt="Untitled.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_335202ab27.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_335202ab27.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_335202ab27.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_335202ab27.png 1000w," sizes="100vw"></figure>Click on the "Create BuildBear Testnet" option to initiate the configuration of your test blockchain. You can either fork from existing Mainnets or construct a new Testnet from scratch.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_1_c7b86c413b.png" alt="Untitled 1.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_1_c7b86c413b.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_1_c7b86c413b.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_1_c7b86c413b.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_1_c7b86c413b.png 1000w," sizes="100vw"></figure>Add your Private Testnet to your MetaMask wallet by using the “Add to Metamask” button:Next, proceed by clicking the "One-Click Deploy" button:<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_2_93ac72475a.png" alt="Untitled 2.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_2_93ac72475a.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_2_93ac72475a.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_2_93ac72475a.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_2_93ac72475a.png 1000w," sizes="100vw"></figure>First, let’s deploy a simple NFT contract.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_3_3c24bd4493.png" alt="Untitled 3.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_3_3c24bd4493.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_3_3c24bd4493.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_3_3c24bd4493.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_3_3c24bd4493.png 1000w," sizes="100vw"></figure>You have the choice to deploy the contract using unlocked accounts or your own wallet. Once you've made your selection, click on "Deploy." Subsequently, follow the provided link to be directed to the contract page on the Explorer.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_4_e01020fe37.png" alt="Untitled 4.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_4_e01020fe37.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_4_e01020fe37.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_4_e01020fe37.png 750w," sizes="100vw"></figure>Minting NFTsProceed to the "Write Contract" section and click on "Connect to Wallet." Navigate to the Safemint function, enter your wallet address, and then click "Write." Complete the transaction approval on your wallet.Next, let's deploy an ERC20 token that we will use as a Reward token.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_6_704ed6f123.png" alt="Untitled 6.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_6_704ed6f123.png 223w,https://strapi.buildbear.io/uploads/small_Untitled_6_704ed6f123.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_6_704ed6f123.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_6_704ed6f123.png 1000w," sizes="100vw"></figure>With all the required contracts in place, let's move to deploying the ERC721 NFT Staking smart contract.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_5_cb0d5baead.png" alt="Untitled 5.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_5_cb0d5baead.png 237w,https://strapi.buildbear.io/uploads/small_Untitled_5_cb0d5baead.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_5_cb0d5baead.png 750w,https://strapi.buildbear.io/uploads/large_Untitled_5_cb0d5baead.png 1000w," sizes="100vw"></figure>The constructor of the NFTStakingPerToken contract accepts the following arguments:<ul><li><code>nftAddress</code>&nbsp;- The address of the ERC721 contract for staking NFTs.</li><li><code>rewardTokenAddress</code>&nbsp;- The address of the ERC20 contract for the reward tokens.</li><li><code>rewardWalletAddress</code>&nbsp;- The address of the wallet that holds the rewards to be paid out.</li><li><code>rewardRate</code>&nbsp;- The number of tokens per staked NFT per day. This value is specified in precision 18.</li></ul>Now, let's move to the Token contract and grant our Reward token allowance to our NFT staking contract.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_7_0e84419106.png" alt="Untitled 7.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_7_0e84419106.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_7_0e84419106.png 500w," sizes="100vw"></figure>Before staking our NFT, let's approve the staking contract to our NFT.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_8_3d1a9ec8b9.png" alt="Untitled 8.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_8_3d1a9ec8b9.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_8_3d1a9ec8b9.png 500w,https://strapi.buildbear.io/uploads/medium_Untitled_8_3d1a9ec8b9.png 750w," sizes="100vw"></figure>Now, let's stake our NFT. Enter the NFT ID and click "Write”.<figure class="image image_resized" style="width:50%;"><img src="https://strapi.buildbear.io/uploads/Untitled_9_f754c52bcd.png" alt="Untitled 9.png" srcset="https://strapi.buildbear.io/uploads/thumbnail_Untitled_9_f754c52bcd.png 245w,https://strapi.buildbear.io/uploads/small_Untitled_9_f754c52bcd.png 500w," sizes="100vw"></figure>Understanding the Smart ContractLet's delve into how the smart contract operates.<figure class="image"><img src="https://strapi.buildbear.io/uploads/carbon_2_d587b05dbe.svg" alt="carbon (2).svg"></figure>let's go through the functions present in the smart contract.Let's go through the functions in the contract and how they work:<ul><li>constructor: This is the constructor function that is called when the contract is deployed. It takes four parameters:&nbsp;<code>nftAddress</code>,&nbsp;<code>rewardTokenAddress</code>,&nbsp;<code>rewardWalletAddress</code>, and&nbsp;<code>rewardRate</code>. These parameters specify the addresses of the staked NFT contract, the reward token contract, the wallet that holds the rewards, and the daily reward rate per staked NFT respectively. Once the constructor is executed, these values are set as the state variables of the contract.</li><li>available: This function returns the number of reward tokens available for a particular address. It takes into <code>account</code>&nbsp;as a parameter. It calculates the time elapsed since the last update for that address, multiplies it by the&nbsp;<code>rewardPerTokenPerDay</code>&nbsp;rate, and adds it to the previously earned rewards for that address stored in the&nbsp;<code>reward</code>&nbsp;mapping. The result is the total available reward tokens for that address.</li><li>stake: This function allows a user to stake a specific token by transferring it from their own address to the contract address. It takes in the&nbsp;<code>tokenId</code>&nbsp;as a parameter. The function uses the&nbsp;<code>safeTransferFrom</code>&nbsp;function of the ERC721 contract to ensure the safe transfer of the staked token.</li><li>withdraw: This function allows a user to withdraw a staked token from the contract. It takes in the&nbsp;<code>tokenId</code>&nbsp;as a parameter. Before allowing the withdrawal, the function checks if the token is actually staked by the user by verifying the ownership in the&nbsp;<code>stakedTokens</code>&nbsp;mapping. If the token is staked, it removes the tokenId from the&nbsp;<code>stakedTokens</code>&nbsp;mapping, reduces the balance of the user stored in the&nbsp;<code>balanceOf</code>&nbsp;mapping, and transfers the token back to the user.</li><li>redeem: This function allows a user to redeem all of their available reward tokens. It updates the rewards for the user and transfers the reward tokens from the reward wallet to the user's address. The amount of tokens to be redeemed is taken from the&nbsp;<code>reward</code>&nbsp;mapping for that user. If the amount is greater than 0, it resets the rewards to 0 and performs the token transfer.</li><li>onERC721Received: This is an internal function that is called when a staked token is received by the contract. It is part of the ERC721Receiver interface and ensures that the contract can receive ERC721 tokens. It updates the staked tokens mapping, increases the balance of the staker, and returns the&nbsp;<code>onERC721Received</code>&nbsp;selector.</li></ul>These functions together allow users to stake NFTs, earn daily rewards, withdraw their staked tokens, and redeem their earned rewards. The contract maintains the necessary mappings and state variables to keep track of the staked tokens, user balances, and rewards.🎉🎉 Congratulations!You have successfully deployed an NFT Staking Smart Contract and gained a comprehensive understanding of how the contract operates.About <a href="http://buildbear.io/">BuildBear</a>:BuildBear is a platform for testing dApps at scale, for teams. It provides users with their own private Testnet to test their smart contracts and dApps, which can be forked from any EVM chain. It also provides a Faucet, Explorer, and RPC for testing purposes.<blockquote>BuildBear aims to build an ecosystem of tools for testing dApps at scale for the teams.</blockquote>

Deploy Your Own ERC721 NFT Staking with Infinite Rewards with BuildBear's No-Code Deployment

Let’s get started then, Shall we?

Let’s get started then, Shall we?

Test DApps at Scale.