SolRent

Decentralised rent deposit escrow for Ireland — built on Solana.

Live demo: solrent-app.vercel.app (Solana Devnet)

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The problem

Ireland has no deposit protection scheme. Landlords hold an estimated €500M+ of tenant money each year with no neutral custodian. When disputes happen, the RTB takes 6–12 months to resolve them.

International tenants get hit hardest — many have already left the country before any decision is made.

The solution

SolRent locks rent deposits in a Solana Program Derived Address (PDA). Neither side can withdraw unilaterally:

1. Landlord creates the escrow — sets the deposit amount, uploads move-in photos. A SHA-256 hash of every photo is stored on-chain.
2. Inspector signs the condition report — an independent inspector signs the baseline on-chain.
3. Tenant pays into the PDA — funds go to a program-controlled address, not the landlord's wallet.
4. Move-out — both parties sign off on the split (escrow releases in seconds), or an arbitrator decides based on the on-chain evidence.

	Today	SolRent
Who holds the deposit	Landlord	Solana PDA
Move-in evidence	Phone photos, easily faked	SHA-256 hash on-chain
Dispute resolution	RTB: 6–12 months	Arbitration: days
Works for international tenants	No	Yes — just a wallet

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Repo structure

.
├── solrent-app/        # Next.js 16 frontend (deployed on Vercel)
├── solrent-program/    # Solana program (Anchor / Rust)
├── SolRent PRD.pdf     # Product requirements
└── SolRent PRD - AI-ML Addendum.md

Tech stack

• Frontend: Next.js 16, React 19, Tailwind v4, TypeScript
• Wallets: @solana/wallet-adapter-react (Phantom, Solflare, etc.)
• On-chain: Solana program (Rust), Anchor framework
• Off-chain storage: Supabase (photo blobs, tenancy metadata)
• Hosting: Vercel

Local development

cd solrent-app
npm install
cp .env.local.example .env.local   # fill in Supabase keys
npm run dev

Then open http://localhost:3000 and connect a Phantom wallet on Devnet.

Required environment variables

Var	Where it's used
NEXT_PUBLIC_SUPABASE_URL	Client + server
NEXT_PUBLIC_SUPABASE_ANON_KEY	Client (with RLS)
SUPABASE_SERVICE_ROLE_KEY	Server-only API routes

Status

Hackathon build for Colosseum Frontier 2026 / Superteam Ireland. Currently runs on Solana Devnet — not production-ready for real deposits.