WanderLink

WanderLink is a decentralized AI-powered travel companion platform that revolutionizes how solo travelers find compatible group travel partners. By combining autonomous AI agents, blockchain verification, and zero-knowledge proofs, we solve the critical trust and safety issues that prevent strangers from traveling together.

🎯 THE PROBLEM Solo travelers face significant challenges when seeking travel companions:

Trust & Safety Issues - No way to verify who you're traveling with, leading to safety concerns and potential fraud Identity Verification Risks - Sharing personal documents with centralized platforms compromises privacy Commitment Problems - People frequently cancel last-minute, wasting time and money Inefficient Matching - Manual searching through forums and social media groups is time-consuming and yields poor compatibility No Financial Protection - No mechanism to ensure commitment or recover losses from cancellations Market Size: The global travel industry is worth $1.9 trillion, with 25% of travelers traveling solo and actively seeking companions. Group travel is growing 15% year-over-year, representing a massive untapped market.

💡 OUR SOLUTION WanderLink is a comprehensive decentralized platform that addresses these challenges through four core pillars:

1. AI-Powered Intelligent Matching 🤖 Technology: Fetch.ai autonomous agents with A2A (Agent-to-Agent) communication

How it works:

Users submit travel preferences (destination, dates, budget, pace, interests) via natural language chat Travel Agent receives and validates requests, storing them in our database Matchmaker Agent uses MeTTa knowledge graphs to perform intelligent compatibility reasoning, analyzing: Destination match (required) Date overlap (≥80% required) Budget compatibility (±20% range) Interest alignment (adventure, culture, food, nightlife, etc.) Pace preference (relaxed, moderate, packed) Age range compatibility Planner Agent generates personalized AI itineraries using OpenAI/OpenRouter when groups are formed Agents communicate autonomously via A2A protocol, negotiating and coordinating without human intervention Result: Users get matched with 2-4 highly compatible travelers in minutes, not days or weeks.

1. Privacy-Preserving Identity Verification 🔐 Technology: Reclaim Protocol (zkTLS), Lighthouse Storage (IPFS), DataCoin NFTs

How it works:

Users upload travel documents (passport, national ID, driver's license) through our secure interface OCR Service extracts data from documents (name, DOB, document number, expiry) Reclaim Protocol generates zero-knowledge proofs that verify document authenticity WITHOUT revealing actual personal information Documents are encrypted using Lighthouse and stored on IPFS with wallet-based access control - only the user's wallet can decrypt DataCoin NFT is minted on Ethereum Sepolia as immutable proof of verification Only proof hashes are stored on-chain, never actual personal data Result: Users prove their identity without compromising privacy. No centralized database of personal documents. True data ownership.

1. Blockchain-Based Trust & Commitment ⛓️ Technology: Hedera Hashgraph, Smart Contracts, Staking Mechanism

How it works:

When compatible travelers are matched, the group is registered on Hedera blockchain via our GroupRegistry smart contract Each member stakes HBAR tokens (e.g., 10 HBAR) to join the group Stakes are locked in a smart contract escrow If the trip completes successfully, stakes are returned + rewards If someone cancels without valid reason, their stake is slashed and distributed to other members On-chain reputation system tracks travel history, completion rate, and reliability All group records are immutable and transparent on the blockchain Smart Contracts Deployed:

GroupRegistry: 0.0.7133936 (Hedera Testnet) StakeContract: 0x9691F5ed60FD99f49a090E9ea062950DF783fFc1 (Hedera EVM) DataCoin NFT: 0x834a8369d6cbf91f8e587e1e998d31988e76a03f (Sepolia) Result: Financial commitment ensures accountability. Blockchain provides transparent, immutable trust layer. Bad actors are penalized, good travelers are rewarded.

1. Decentralized Data Economy 💰 Technology: Lighthouse DataCoins, 1MB.io, Data Monetization

How it works:

Users earn DataCoin tokens for: Completing identity verification (+10 tokens) Finishing trips successfully (+5 tokens) Sharing travel preferences (+2 tokens) Maintaining high reputation (+5 tokens) Referring new users (+3 tokens) Users own their data - encrypted on Lighthouse, only they control access Users can sell their verified travel data to travel agencies, tour operators, or researchers Blockchain-based discount coupons earned through participation Data marketplace where verified travel data has real monetary value Result: Users profit from their data instead of platforms exploiting it. True data ownership and monetization.

🧩 Technical Architecture & Implementation

WanderLink is a full-stack decentralized application that merges AI autonomy, Web3 verifiability, and privacy-preserving data ownership into a unified travel experience.

🌐 Frontend Layer

The frontend is built with Next.js 14 + TypeScript, leveraging the App Router for hybrid rendering (SSR + CSR). We integrate:

Wagmi v2 and WalletConnect v2 for multi-wallet connectivity (MetaMask, Coinbase Wallet, WalletConnect, etc.)

Ethers.js v6 for blockchain interaction across Ethereum and Hedera networks

TailwindCSS (neobrutalist design system) — bold borders, high-contrast palettes, and expressive motion for a modern, playful user interface

All pages are deployed via Vercel, with environment-specific builds that enable API route isolation and serverless execution for wallet authentication.

⚙️ Smart Contract Layer

We leverage dual-chain architecture to balance scalability and transparency:

Chain Role Highlights Hedera Hashgraph Primary chain for core dApp logic 3-second finality, < $0.001 gas, 10,000 TPS Ethereum Sepolia Secondary chain for fungible token rewards Industry-standard ERC-20 compatibility

Deployed Contracts:

GroupRegistry (Hedera 0.0.7133936) — Immutable on-chain record of all travel groups.

StakeContract (Ethereum 0x9691F5ed…) — Escrow and staking for trip commitment.

DataCoin (ERC-20) (Ethereum 0x834a8369…) — Fungible incentive token that powers the ecosystem.

Smart contracts are written in Solidity 0.8.x, compiled in Remix IDE, deployed via HashIO RPC, and verified on HashScan and Etherscan for public transparency.

🤖 Autonomous AI Agents (Fetch.ai + MeTTa)

The AI layer is built on Fetch.ai’s uAgents framework, allowing autonomous agent-to-agent (A2A) communication via structured messages.

Agents:

Travel Agent

Receives natural language input via the ASI:One Chat Protocol

Validates data and stores structured preferences in Supabase PostgreSQL

Matchmaker Agent

Executes every 60 seconds

Uses MeTTa knowledge graphs for semantic reasoning

Computes compatibility scores based on: destination (required), date overlap ≥ 80%, budget ± 20%, interests, pace, age range

Planner Agent

Generates personalized itineraries using OpenRouter / GPT-4

Handles payment settlement through the AP2 protocol on Hedera

All agents are registered on Agentverse, orchestrated via DeltaV, and accessible through ASI:One’s natural-language interface.

Users can simply chat: “I want to visit Bali in December.” — the system autonomously performs matchmaking, itinerary generation, and settlement — no manual input required.

🔐 Privacy, Verification & Data Ownership

We integrate Reclaim Protocol and Lighthouse Storage for zero-knowledge verification and self-sovereign identity:

Reclaim Protocol (zkTLS):

Validates documents (passport, ID, visa) without revealing data.

Only proof hashes are written on-chain — raw documents never leave the user’s control.

Lighthouse Storage:

Encrypts and uploads documents to IPFS using wallet-based encryption.

Access control is token-gated (DataCoin ownership required).

Only the user’s wallet private key can decrypt documents.

The backend uses Express.js + Tesseract.js OCR to parse documents locally, generate proofs, and upload encrypted payloads.

This results in true user data ownership — decentralized storage, cryptographic access control, and full on-chain transparency.

💰 Tokenomics: DataCoin (ERC-20)

Users earn DataCoins as on-chain proof of verified participation:

Action Reward Identity verification 10 DataCoins Completing a trip 5 DataCoins Sharing preferences 2 DataCoins Successful referral 3 DataCoins

Utility:

Access premium features (e.g., priority matching)

Stake for commitment in trips

Trade on DEXs or redeem for ecosystem perks

This builds a data economy where verified reputation = monetizable asset.

🧱 Infrastructure Component Technology Frontend Next.js 14 + TypeScript + TailwindCSS Wallet Integration Wagmi v2 + WalletConnect v2 Blockchain Hedera + Ethereum Sepolia Database Supabase (PostgreSQL + Realtime subscriptions) AI Agents Fetch.ai uAgents + MeTTa Verification Reclaim Protocol + Lighthouse Storage Hosting Vercel (frontend), Agentverse (agents), Supabase (DB) 🧠 In Summary

WanderLink demonstrates how AI autonomy, verifiable blockchain records, and privacy-preserving proofs can merge to create a trustless, decentralized travel companion:

Frontend: Next.js + TypeScript + Wagmi Blockchain: Hedera + Ethereum (Smart Contracts + ERC-20 Rewards) AI Layer: Fetch.ai uAgents + MeTTa Reasoning Privacy: Reclaim Protocol + Lighthouse Storage Backend / DB: Express.js + Supabase + Onchain

Together, these components deliver a Web3-native AI platform that coordinates travel, safeguards identity, and enables a new kind of data-driven, user-owned ecosystem.