Creation of NFT and integration into the current miniApp

Cryptocurrency & Blockchain — incorrectly specified categories?

660 USD

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Good day! We are looking for a skilled blockchain developer who can help us create an NFT collection (about 1000 pieces) and integrate it into our already ready Telegram miniApp platform on .NET. We want to add NFTs as a feature: so that users receive them for actions + (they can trade on the built-in marketplace on TON, and this would give bonuses in the game.

In general, the tasks:

Create a smart contract on TON for minting NFTs, set the price (let's say, $25 for selling part of the collection) and configure royalties (5% to us from resales). (if there are other proposals, we also consider them)
Integrate TON SDK into our .NET code for distributing NFTs (airdrops/giveaways, batch transfers for 200+ pieces).
Add NFT ownership verification in the backend to unlock bonuses in the casino (for example, if the user has an NFT, give +5% on winnings).
Implement the TON marketplace (like MRKT or Getgems) directly in the miniApp — so that users can buy/sell inside, without leaving the miniApp

NET Core (C#) — to work with our code, integrate APIs and checks, TON SDK (.NET version), FunC or Solidity for smart contracts, NFT standards (TEP-62 for TON). Telegram Web App SDK (JS/TS) for the front;

Brief description of the process (how it will look)

Creating the collection: The developer writes a smart contract on TON, mints 1000 NFTs with metadata (images, bonuses). It looks like: Admin in the panel clicks "Mint" — NFTs appear in your wallet.
Integration into miniApp: In the .NET backend, they add code to check wallets. The user connects Tonkeeper in the app, makes a deposit — the system automatically distributes NFTs (free for you, fees ~0.01 TON per batch).
Distribution and marketplace: For 200 NFTs — batch-airdrop under conditions (e.g., top players). The marketplace is embedded as a tab in the app: Users see "Buy/Sell NFT", trade for TON, royalties accumulate to you.
In the game: The user with an NFT enters the games — the backend checks ownership and gives a boost. The admin in the bot monitors: sees distributions, sales, income from royalties.

If you are interested and can perform, let us know, I would be happy to discuss! The price is discussed individually!

Proposals 7 Discussions 1

Yura Sachenko

5 1

Budget: 11000 PLN Deadline: 31 days

Good day!

I have experience with Telegram Mini Apps and integrations with blockchain stacks. I am ready to create your NFT feature on TON turnkey: collection smart contracts, integration into .NET backend, ownership verification for game bonuses, and an integrated marketplace in MiniApp.

What I will implement:

NFT collection smart contracts (TON, TEP-62)
1. Collection contract + master minting + royalty (5%) and configurable payout address.
2. Mass minting of ~1000 tokens (metadata: image, rarity/bonus).
3. Optionally: minting at a fixed price ($25) for part of the collection; payment verification; limits/allowlist.

Airdrop / batch distribution
1. Scripts for batch transfers (200+ NFTs) considering fee (~0.01–0.05 TON per operation, depending on the route).
2. Web panel/CLI for launching distributions (admin clicks "Mint/Airdrop" → transactions are executed).

Integration with your .NET Core (C#)
1. Connecting TON SDK for signing/sending transactions, reading contract states.
2. API endpoints: POST /nft/airdrop, GET /nft/owned?wallet=..., POST /nft/mint, logging and retry mechanisms.
3. Ownership verification on the backend (reads ownership from the collection) → returns bonus flags in the casino (+5% etc.).

Embedding the marketplace
1. Integration of MRKT / Getgems into MiniApp (webview/deeplink), filter by your collection, display "Buy/Sell".
2. Alternative: a simple showcase directly in MiniApp + buttons to navigate to marketplace lots.

Telegram Mini App (WebApp)
1. Connecting Tonkeeper/Ton Wallet (user-side) via adapters; obtaining wallet address.
2. "My NFTs" screen, token card (image, rarity, bonus), "Buy/Sell" / "Activate bonus" buttons.
3. Dark mode, responsive.

1. Is the collection a single one or a series (seasons)? Will there be levels of rarity/bonuses?
2. Purchase for TON only with non-custodial wallets (Tonkeeper etc.) or do we allow custodial accounts (for non-crypto users)?
3. Where to store metadata/images: IPFS/Pinata/Arweave or your CDN?
4. Bonus +5% in the casino — fixed or will there be other effects (levels, staking)?
5. Which marketplace is preferred: MRKT or Getgems (or both)?
6. Production environment: is there DevOps/server, domain, SSL? Do you need help with CI/CD deployment?

I left more details in Notion with a description of the project architecture, prices, and stages:
https://www.notion.so/NFT-TON-257ea80ec59480cea055df96f4783014?source=copy_link

Thank you!)

Robert Smith

0 0

Projects -
Rating -
Rating 153

Budget: 5000 PLN Deadline: 15 days

Hello, Vlad!
Thank you for the detailed information! I have carefully read your requirements and fully understood them.

As a full-stack Web3 and blockchain developer, I have sufficient experience in developing smart contracts on the Ton blockchain and NFTs, Telegram mini-apps, and .NET.

I am confident that I will successfully handle this task.
Let's discuss this in more detail.
Best wishes!

The list does not show proposals concealed by the client or freelancer with a Plus profile, as well as proposals violating rules

Vlad Pustovar
Aleksandrów, Poland

Projects 4
Rating -
Rating 436

Creation of NFT and integration into the current miniApp

Brief description of the process (how it will look)

Yura Sachenko

Robert Smith

Proposals are currently absent

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