Hey 👋 there, Welcome 🙂
Ayush here, a software developer building full stack solana dApps using Anchor, Rust, React, Next.js, Node, Tailwind and Express.
Here are some of the web3 projects I build in my web3 journey and things I learned along the way : -
On-Chain Video Rental App
- Website: Solflix
- Pitch Deck: Slides
- Devnet Address: BFpFTmDwDNygSW9iL1UErkpDGTDiJFcjZh73DJ1vRu47
- Program Repository: Program
- Frontend Repository: Frontend
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SolFlix is a video rental dApp, where creator have autonomy to share videos anonymously, decide on validity of the video and price they would like to charge per video. (paid is SOL)
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Consumer have autonomy to have access to video in anonymous fashion and rent a video by paying direct to creator.
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This idea can be extended to share files and other media formats, without intervention of any intermediary.
Vault Program
A Solana program enabling users to create, deposit into, withdraw from, and close a user-specific account.
- User can open a vault, which will be system account unique to user
- User can deposit amount into vault
- User can withdraw amount from vault
Tech Stack : Anchor, Rust
Escrow Program
A Solana program for holding funds until a condition is met for achieving a trustless conditional transfer.
- Maker initializes escrow PDA,
- Maker creates vault PDA, whose authority lies with escrow
- Escrow contains information of token mint addresses and amount that needs to be exchanged
- Maker calls refund instruction for closing escrow and get a refund
- Taker creates associated_token_account (ATA) for maker
- Taker transfers tokens to maker ATA
- Escrow transfers tokens from vault to taker ATA
- Escrow PDA is closed
Tech Stack : Anchor, Rust
NFT Staking Program
A Solana program for staking an NFT from a specific collection, earning points, and minting rewards.
- Creates user account PDA
- User account contains
- points: reward points
- amounts_staked: number of nft staked
- Creates Config PDA
- Config PDA includes
- points_per_stake: reward points per stake
- freeze_period: period till which nft needs to be staked
- max_stake: max number of nft that can be staked
- rewards_bump: bump of rewards_mint
- Initialize Rewards Mint
- Only Admin can create config and reward_mint
- Creates Stake PDA
- Stake PDA includes
- owner: owner of nft
- mint: mint address of nft
- stake_at: Unix time stamp when nft was staked
- Delegate Authority of Mint ATA to Stake Account
- Freezes Nft
- Increment user account staked nft by one
- Checks elapsed time
- Increases the user reward points
- Unfreezes NFT
- Revokes delegation to Stake Account
- Decreases ft staked number by one
- Mint reward tokens to User Rewards ATA
- Makes user reward points to zero
Tech Stack : Anchor, Rust
Marketplace Program
A Solana program where :
- admin can initialize marketplace
- maker can list their NFT,
- maker can delist their listed NFT,
- taker can purchase listed NFT
Marketplace
pub struct Marketplace {
pub admin: Pubkey,
pub fee: u64,
pub treasury_bump: u8,
pub rewards_bump: u8,
pub bump: u8,
#[max_len(32)]
pub name: String,
}Listing
pub struct Listing {
pub maker: Pubkey,
pub mint: Pubkey,
pub price: u64,
pub bump: u8,
}- Init: initilaizes the marketplace with pda with a specific name and related accounts by admin
- List: initilaizes the listing pda, transfer NFT from user's NFT ATA to Vault owned by Listing pda
- Purchase:
- send price (sol) from taker to maker deducting marketplace fee,
- transfer fee from taker to treasury of marketplace
- send nft from vault of marketplace to taker ATA
- close marketplace vault
- Delist:
- send nft from marketplace vault to maker ata
- close marketplace vault
Tech Stack : Anchor, Rust
AMM Program
A Solana program where: - liquidity pool is created - provider can deposit tokens - user can swap tokens via the pool - provider can withdraw tokens from pool
pub struct Config {
pub seed: u64, // used for creating different pools config
pub authority: Option<Pubkey>, // if we want authority to lock config account
pub mint_x : Pubkey, // TokenX
pub mint_y: Pubkey, // TokenY
pub fee: u16, // Swap fee in basis points
pub locked: bool, // authority can lock a pool
pub config_bump: u8, // seeds for config account
pub lp_bump: u8 // bump seeds for LP token
}-
Initialize: Initialize liquidity mint, vaults for liquidity tokens, and lp pool config
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Deposit:
- deposit liquidity tokens from user-ata to liquidity tokens-ata
- mint lp tokens to user-lp-ata
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Swap:
- deposit x token from user-ata-x to lp-vault-ata-x
- withdraw y from lp-vault-ata-y to user-ata-y
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Withdraw:
- withdraw tokens from lp pool vault to provider-ata
- burn lp tokens owned by provider