A Minimal & Deterministic Blockchain

1. Introduction

xPrivFi is built on a simple idea: a digital system should remain understandable, auditable, and fair. The protocol avoids complex execution layers, hidden balance systems, or cryptographic mechanisms that obscure supply or verification.

At its core, xPrivFi combines:

• a deterministic Layer-1 blockchain,
• a fixed supply of 1,000,000 XPF,
• a transparent ledger with simple validation rules,
• a human-scale mining system called HexGrid,
• minimal optional privacy at the wallet level.

2. Layer-1 Design

The Layer-1 blockchain is intentionally minimalistic. Every balance, transaction, and state update is visible and validated by all nodes. There are no smart contracts, no hidden state, and no private pools.

• Consensus: RandomHash-style Proof-of-Work.
• Difficulty: CP-Diff v1.0 (targets ~6 min blocks).
• Supply: fixed 1,000,000 XPF.
• Ledger: transparent account/UTXO-like model.
• Validation: deterministic, auditable, minimal.

The protocol is intentionally limited to ensure long-term stability and ease of verification for both humans and machines.

3. HexGrid: Human-Scale Mining

HexGrid is a Layer-2 mining model designed to favour time and participation over compute power. It distributes 500,000 XPF over ~6.66 years through predictable, verifiable rounds.

• Round duration: 6 minutes + 30s reveal + 30s lobby.
• Reward: 1 XPF per round.
• Winner: exactly one address per round.
• Fairness: no GPU advantage; human-friendly design.
• Verification: winner proof derived from round data.

HexGrid runs off-chain but settles rewards directly onto the transparent Layer-1 ledger.

4. Privacy Model

xPrivFi is transparent by default. The protocol does not use shielded balances, encrypted commitments, nullifiers, or zero-knowledge circuits. All on-chain supply and activity remain visible and auditable.

Privacy in xPrivFi focuses on wallet-level tools that do not affect consensus or hide supply:

• local address rotation and masking,
• client-side metadata hiding,
• optional view-only keys.

This approach keeps the core protocol simple and bulletproof while giving users optional, minimal privacy features.

5. Economic Model

The system uses a fixed supply with predictable distribution. The Layer-1 chain mints no new coins after genesis. All mining rewards come from the predefined HexGrid pool.

• Total supply: 1,000,000 XPF.
• L2 mining pool: 500,000 XPF.
• Reward per round: 1 XPF.
• Inflation: none.

6. Reference Node

The official node implementation is written in Go. It provides the full protocol: block validation, transaction execution, state updates, networking, and RPC.

• Language: Go.
• P2P: block and transaction propagation.
• State: accounts, balances, history.
• RPC: JSON-RPC for wallet and explorer usage.
• Future: optional alternative implementations (Rust/C++).

7. Ecosystem

xPrivFi connects conceptually to several independent projects that share a principle-driven design approach.

• RootBaseLayer (RBL): platform for minimalistic chains and tokens.
• PEX: Principle Exchange — the category describing RBL.
• Fabrix (FBX): an experimental BEP-based token using the HexGrid idea.
• Presence: a non-financial human-layer app.

These projects do not modify XPF’s consensus, supply, or mining model.

Download Full Whitepaper

A full PDF version of this whitepaper is available for download. It includes diagrams, additional commentary, and a clean printable format.

This whitepaper describes implemented components and long-term design intent. Nothing in this document constitutes a financial promise, guarantee, or commitment to deliver future features.