Elevault

DeFi rewards platform with trading, staking, lottery, governance on BNB chain

Delivered complete DeFi ecosystem, enabling Elevault’s funded public and private launch.

Network:Binance Smart Chain
Smart Contracts:11 Contracts
Responsive Web Pages:13 Pages
MVP Delivered:10 Weeks

The Challenge

The client, a U.S.-based finance professional, wanted more than a speculative meme token. He needed an investable DeFi ecosystem that blended rewards, governance, and security in a way investors could trust.

  • Launch a native token (ELVT) with:
    • Deflationary mechanics (burn on every trade)
    • Dynamic trading and project fee controls
  • Create real utility beyond trading:
    • Staking funded by project fees
    • Weekly lottery system using verifiable randomness
    • Governance so the community could eventually take control
  • Architect everything to be:
    • Technically sound across multiple interacting smart contracts
    • Transparent and auditable for public and private investors
    • Usable by everyday crypto holders via a clean web interface

Our Plan and Build

We turned the high-level idea into a concrete, end‑to‑end DeFi product: smart contracts, app, integrations, and launch.

1. Specification & architecture

  • Mapped out:
    • Tokenomics, presale logic, staking model, lottery mechanics, governance rules
    • All fee flows, burn rules, and edge cases
  • Designed:
    • Smart contract architecture for token, presale, staking, lottery, NFT, governance
    • Application architecture and UX flows for each user journey

2. Smart contracts & blockchain integrations

  • Built 11 smart contracts, including:
    • Deflationary ERC‑20 token on BSC with fee + burn logic
    • Public/private presale with vesting and multi-stablecoin support
    • Discrete staking, lottery, NFT trade license, and governance contracts
  • Integrated:
    • Chainlink price feeds for accurate presale pricing
    • Chainlink VRF for verifiable weekly lottery randomness
    • Payment splitter to route project fees to multiple recipients

3. Web application & wallet experience

  • Designed responsive desktop and mobile UI in Figma
  • Implemented 13 Next.js pages and sections (static + dynamic)
  • Integrated:
    • RainbowKit to support popular crypto wallets
    • On-chain data and actions for presale, staking, lottery, governance, and token views
  • Added clear transaction feedback:
    • Loading states, confirmations, and error handling for all user actions

4. Testing & launch

  • ~2 weeks of:
    • End‑to‑end testing of every contract interaction and user flow
    • Validation against the original specification
  • Supported Elevault through a successful public launch phase.

Key Features

Landing Page

Landing Page

We built a one pager website for the project to allow users to learn more about the platform. The image only shows a portion of the landing page however the landing page had a fully integrated presale widget as you can see and below that there were a variety of content sections.

Staking Program

Staking Program

The platform featured a token staking program for token investors. The staking implementation followed a discrete staking model where staking rewards were generated from trading fees of the main ELVT token. The page gave users a simple interface to stake tokens, unstake tokens and claim their earned rewards.

Token Presale

Token Presale

The platform featured a presale which served as the main way for users to initially acquire tokens. The presale was split up into a private and public round. During the presale users had the ability to purchase tokens using USDC, USDT, BUSD and BNB. Purchased tokens were vested for a specific duration after which they could be claimed and traded. Chainlink price oracles were used to ensure proper conversion of presale tokens.

Weekly Lottery

Weekly Lottery

The project featured a weekly lottery. Users could buy lottery tickets using their ELVT tokens. Every week a prize pot would be paid out to one lottery winner at random. We used a chainlink VRF integration for verifiable on-chain randomness. Rewards would accumulate from token trading fees into the prize pot.

NFT Trade License

NFT Trade License

The project token featured a trading fee that was used to fund the staking rewards and lottery prize pots. Users that were not keen paying that fee had the option to purchase a one time trading license that would permanently lower their trading fee rate. These licenses took the form of ERC-721 NFTs and could be purchased through USDC, USDT or BUSD.

Governance Feature

Governance Feature

The platform included a governance feature where the founder had the ability to propose certain protocol changes and token holders had the ability to vote for those changes in a decentralised and fair manner.

Governance Voting

Governance Voting

Users had the ability to vote on governance proposals through their ELVT tokens. Each token counted for one vote and each proposal needed a specific set of votes to be able to pass. The ELVT token implemented the ERC-20 votes standard and we paired that with a custom governor contract with GovernorVotesQuorumFraction implementation.

Results and Impact

We took Elevault from concept to a live, investor-ready DeFi ecosystem.

  • Delivered a complete on-chain and front-end stack in ~10 weeks
  • Enabled the founder to:
    • Launch the ELVT token on BSC
    • Run multi-asset public and private presales
    • Offer staking, lottery, NFT trade licenses, and governance from day one
  • Gave investors and users:
    • Transparent, on-chain mechanics with verifiable randomness and price feeds
    • A single interface to manage holdings, rewards, and governance
  • Although the founder later chose to shut the project down, the platform:
    • Operated successfully post-launch
    • Demonstrated our ability to ship complex, multi-contract DeFi products on tight timelines