Protocol Architecture

Decentralized, cross-chain vault infrastructure built for reliability, security, and scalability.

System Overview

Layer 1: User Interfaces

zkVault App
Wallet Integrations
DeFi Protocols
Custom dApps
↓

Layer 2: SDK & APIs

TypeScript SDK
REST API
GraphQL API
↓

Layer 3: Smart Contracts (8+ Chains)

VaultFactory
VaultRegistry
AttestationRouter
ZKVerifier
LayerZeroVault
CrossChainRegistry
AssetManager
EventEmitter
↓

Layer 4: Cross-Chain Messaging

LayerZero V2 Protocol
Hub-and-Spoke: BNB Chain (Hub) ↔ 7+ Spoke Chains
↓

Layer 5: Attestation Network

100+ Decentralized Nodes
Byzantine Fault Tolerant Consensus (67% threshold)

Core Components

Smart Contracts

  • VaultFactory: Vault creation and initialization
  • VaultRegistry: On-chain vault state management
  • AttestationRouter: Death verification orchestration
  • ZKVerifier: Zero-knowledge proof validation
  • LayerZeroVault: Cross-chain vault deployment
  • AssetManager: Multi-asset custody and release

Cross-Chain Layer

  • LayerZero V2: Omnichain messaging protocol
  • Hub-and-Spoke: BNB Chain as central hub
  • Atomic Sync: Synchronized state updates
  • 8+ Chains: BSC, Ethereum, Polygon, Arbitrum, Optimism, Base, Avalanche, opBNB
  • Gas Optimization: Batch cross-chain messages

Attestation Network

  • 100+ Nodes: Decentralized attestation providers
  • BFT Consensus: 67% threshold for consensus
  • Multi-Source: Government records, social media, oracles
  • Reputation System: Node quality scoring
  • Economic Security: Staking and slashing mechanism

Zero-Knowledge Privacy

  • zk-SNARKs: Privacy-preserving proofs
  • Encrypted Content: IPFS + encryption for sensitive data
  • Private Beneficiaries: Hidden until release conditions met
  • Selective Disclosure: Reveal only necessary information
  • Compliance Ready: Auditable without exposing details

APIs & SDK

  • TypeScript SDK: Complete vault management
  • REST API: HTTP endpoints for all operations
  • GraphQL API: Flexible queries and subscriptions
  • WebSocket: Real-time event notifications
  • Indexer: Historical data and analytics

Security Model

  • Audited Contracts: Multiple security audits
  • Upgradeable: Proxy pattern for contract upgrades
  • Access Control: Role-based permissions
  • Rate Limiting: Protection against spam
  • Pause Mechanism: Emergency stop functionality

Vault Lifecycle

1

Creation

User creates vault with beneficiaries, shares, and assets via SDK or dApp

2

Active Monitoring

Attestation network monitors owner activity. Regular check-ins reset countdown

3

Attestation

Multiple sources submit death attestations. Consensus requires 67% agreement

4

Grace Period

30-60 day grace period for disputes or revocation by owner

5

Release

Assets automatically distributed to beneficiaries according to shares

Technical Specifications

Smart Contracts

  • Language:Solidity 0.8.24
  • Pattern:UUPS Proxy
  • Framework:Hardhat
  • Libraries:OpenZeppelin 5.0.2
  • Testing:Hardhat + Foundry
  • Coverage:>95%

Cross-Chain

  • Protocol:LayerZero V2
  • Topology:Hub-and-Spoke
  • Hub Chain:BNB Chain (56)
  • Spoke Chains:7+ chains
  • Message Type:Atomic
  • Finality:~2-5 minutes

Attestation Consensus

  • Algorithm:Byzantine Fault Tolerant
  • Threshold:67% (2/3)
  • Node Count:100+
  • Sources:Gov, Social, Oracles
  • Verification Time:30-60 days
  • Dispute Period:30 days

APIs & SDKs

  • SDK Language:TypeScript
  • RPC Library:Viem 2.9.0
  • REST Framework:Express
  • GraphQL Server:Apollo Server
  • Database:PostgreSQL + Prisma
  • Caching:Redis

Ready to Build?

Start integrating Vault Protocol into your application today.

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