Tech Stack

Core Infrastructure

Layer	Technology	Purpose
Smart Contract	Solidity 0.8.30	On-chain state & verification
ZK Proving	SP1 zkVM (Succinct)	Privacy-preserving proof generation
Framework	Foundry	Development, testing, deployment
Token Standard	ERC-20	Multi-token support

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Zero-Knowledge Stack

Component	Technology	Description
Prover	SP1 zkVM	Rust-based ZK virtual machine
Verifier	ISP1Verifier	On-chain proof verification
Hash Function	Keccak256	Ethereum-native hashing
Commitment	Pedersen-style	Hide amount & ownership
Nullifier	Hash-based	Prevent double-spending

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User Interface & Integration

Component	Technology	Role
Core Framework	Next.js	Modern, high-performance React application
Component Library	shadcn/ui	Beautifully designed, accessible UI components
Wallet Suite	Rainbow Kit	Seamless and polished wallet onboarding
Network Layer	Mantle SDK	Native integration with Mantle ecosystem
Data Hooks	Wagmi	React hooks for interacting with smart contracts
Interaction Engine	GSAP	Professional-grade animations and motion design

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Cryptographic Primitives

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Data Structure

Structure	Depth/Size	Capacity
Merkle Tree	32 levels	~4.3 billion notes
Commitment	32 bytes	Unique per note
Nullifier	32 bytes	One-time use
Proof	Variable	SP1 compressed

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Supported Networks

Network	Type	Status
Mantle	L2	🟢 LIVE
Ethereum Mainnet	L1	🟡 Planned
Base	L2	🟡 Planned
Arbitrum	L2	🟡 Planned
Optimism	L2	🟡 Planned
Sepolia	Testnet	🟢 Ready

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Dependencies (Smart Contract)

├── openzeppelin-contracts   # ERC20 interface
├── sp1-contracts            # ZK verifier
└── forge-std                # Testing framework

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Why This Stack?

Choice	Reason
SP1 zkVM	Write ZK logic in Rust, not circuits
Foundry	Fast compilation, native fuzzing
Next.js	Best-in-class React framework for performance
shadcn/ui	Copy-paste accessible components, full control
Rainbow Kit	Polished, reliable wallet connection UX
Keccak256	Gas efficient, Ethereum native
ERC-20	Universal token compatibility