Minecraft Web3 Wallet Linking

A system that allows you to link a Web3 wallet (Ethereum Sepolia) with a Minecraft player using real cryptographic signatures.

Components

• Minecraft Plugin (Paper) Generates tokens, exposes the /wallet link and /wallet status commands.

• Backend (Node.js + Express) Verifies ECDSA signatures and manages the linking status.

minecraft-web3

• Frontend (Next.js + RainbowKit) Connects wallets and requests message signatures.

• Web3 (Foundry) Reference contract for signature validation.

Security

• Real cryptographic signature
• Backend does not trust frontend
• Reproducible and verifiable message
• Anti-spoofing

Stack

• Java 17 / PaperMC
• Node.js / Express
• Next.js / RainbowKit / wagmi
• Foundry / Solidity

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