Blockchain Development
Web2 to Web3 Integration

Upgrade Your Platform from Web2 to Web3

Whether you're running a SaaS, marketplace, game, or mobile app — we help you integrate blockchain, crypto payments, NFTs, and decentralized identity (DID) into your existing Web2 product. Go from central to decentralized, without starting from scratch.

Web2 to Web3 transition illustration
2+Years of Experience
20+Clients Worldwide
15+Dedicated Professionals
8+Countries Served
22Projects Delivered

Web2 to Web3 Integration Services

We bridge your current tech stack (React, Node.js, Firebase, PHP, etc.) with Web3 tools like MetaMask, smart contracts, IPFS, and token standards — allowing your platform to evolve, not rebuild.

Wallet Integration (MetaMask, WalletConnect, etc.)

Enable blockchain login and transactions using wallet providers like MetaMask, WalletConnect, Coinbase Wallet, and OKX Wallet. We add Web3 auth, session persistence, and wallet UX best practices to your Web2 interface.

Smart Contract Connection & Interaction

We connect your frontend/backend to smart contracts deployed on Ethereum, Polygon, Solana, and BNB Chain. Includes read/write functions, event listening, and transaction handling using ethers.js or web3.js.

NFT Integration into Web2 Platforms

Add NFT minting, display, transfers, or gated access to your platform. Ideal for marketplaces, games, loyalty programs, and content paywalls. Supports ERC-721 and ERC-1155 standards.

Token Payment Gateway Setup

Accept crypto payments with USDT, ETH, MATIC, or your custom token. We integrate payment flows using smart contracts, on-ramp/off-ramp services (Ramp, Transak, MoonPay), and secure transaction tracking.

Decentralized Identity (DID) & Web3 Auth

Implement decentralized login and identity management using protocols like ENS, Sign-In with Ethereum (SIWE), and Lens Protocol. Replace traditional logins with wallet-first experiences.

Off-Chain to On-Chain Data Sync

We build bridges between your Web2 databases (MongoDB, Firebase, PostgreSQL) and on-chain smart contracts. Sync assets, actions, and user data for hybrid Web2-Web3 models.

Web3 Storage Integration (IPFS, Arweave, Filecoin)

Store files, images, and metadata in decentralized storage. We handle pinning, access control, and CID-based referencing for permanent and censorship-resistant data.

Custom Dashboards for Web3 Ops

Build internal or customer-facing dashboards to monitor smart contract interactions, wallet stats, transaction history, NFT ownership, and token analytics — all pulled live from blockchain data.

Architecture Overview

The real technology layers behind a Web2 to Web3 Integration engagement.

Frontend

React

Dashboards, wallets, and admin panels for blockchain applications.

Smart Contract Layer

Solidity

Audit-ready contracts for tokens, DeFi, and NFT logic.

Blockchain Network

Ethereum, Polygon & Hyperledger Besu

Public, Layer-2, and permissioned network options depending on the engagement.

Infrastructure

AWS

Node hosting, RPC endpoints, and monitoring.

Benefits

Seamless Integration

No need to rebuild your app

We connect your existing stack with Web3 tools without requiring a full product overhaul. Fast, modular, and scalable.

Proof in Production

HedgePay
Real Tantrija case study

HedgePay

A DeFi platform paying holders of its HPAY token a customizable monthly BUSD reward, calculated by the HedgeFi risk-reduction algorithm.

  • HedgeFi Reward Algorithm
  • Customizable Rewards
  • Market-Independent Payouts

/ FAQs

Frequently Asked Questions

Do we need to rebuild our platform to add Web3 features?

No. We connect wallet login, smart contract interactions, and NFT/token functionality directly into your existing Web2 frontend and backend - no need to rebuild your app from scratch.

Which wallets can users connect with?

We integrate MetaMask, WalletConnect, Coinbase Wallet, and OKX Wallet, along with Web3 auth, session persistence, and wallet UX best practices so login feels native to your product.

Can you accept crypto payments alongside our existing payment flow?

Yes. We set up token payment gateways for USDT, ETH, MATIC, or a custom token, using on-ramp/off-ramp services like Ramp, Transak, or MoonPay, integrated with secure transaction tracking.

How do you keep our existing Web2 database in sync with on-chain data?

We build bridges between your Web2 databases (MongoDB, Firebase, PostgreSQL) and on-chain smart contracts, syncing assets, actions, and user data for a hybrid Web2-Web3 model rather than two disconnected systems.

What if we want decentralized login instead of traditional accounts?

We implement decentralized identity via ENS, Sign-In with Ethereum (SIWE), or Lens Protocol - replacing or supplementing traditional logins with a wallet-first experience.

Web3 is the future — let’s take you there

Work with Tantrija to upgrade your Web2 platform with blockchain innovation Wallets, Smart Contracts, NFTs & Crypto Payments

TANTRIJA ENTERPRISES - INNOVATE BEYOND BOUNDARIES - TANTRIJA ENTERPRISES - INNOVATE BEYOND BOUNDARIES -