I wanted any and everybody's thoughts on an idea I came up with and wanted to see if it was in the realm of possibility + what you guys think

I brainstormed a type of currency similar to XMR based off of its ring signature rules and the traditional system of hawala , vice is greatly appreciated and constructive criticism

**Hundi** – A pure P2P cryptocurrency protocol recreating hawala's trust-based transfers on-chain with automatic Monero-style ring mixing for unbreakable privacy. Users specify only recipient hawaladar + amount; protocol auto-mixes with network decoys.

## Core Innovation

**One-click hawala**: Alice sends 100 USDC to Charlie via Bob (her contact). She inputs: `amount`, `bob.eth`, `secret="hundi42"`. Hundi auto-pulls 10 recent active hawaladars as decoys, broadcasts ring signature flooding the chain—transaction appears to ping the *entire* network. Bob propagates secret privately; Charlie receives value seamlessly.

## Technical Architecture

```

User Flow: amount → recipient → secret

↓

[Auto] RingSig(10 recent hawaladars + Bob) → Mempool flood

↓

Private: Bob → Dana → Charlie (secret chain)

↓

On-chain: Charlie claims amid network noise

```

**Key Components:**

- **AutoDecoy Pool**: Recent 1k rep NFT minters (24h lookback) – no user selection

- **Fixed Ring Size**: 11 participants (self + recipient + 9 decoys) for uniform tx fingerprint

- **ZK Relays**: Semaphore proofs hide intermediate hops

- **HTLC Backbone**: Atomic secrets + timelocks prevent stuck funds

## Production Solidity Contract

```solidity

// Hundi.sol - Deploy Monad/Ethereum

pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

import "@zk-kit/protocols/semaphores/contracts/Semaphore.sol";

contract Hundi is ERC721("HundiRep", "HREP"), Semaphore {

uint256 constant RING_SIZE = 11;

uint256 constant LOOKBACK = 7200; // ~24h blocks

struct Transfer {

bytes32 commitment;

address recipientHawaladar;

uint256 amount;

address token;

bool settled;

}

IERC721 public repNFT;

mapping(bytes32 => Transfer) public transfers;

mapping(address => uint256) public repScore;

// USER CALL: Only needs recipient + amount

function sendHundi(bytes32 _commitment, address _hawaladar, uint256 _amount, address _token) external {

address[] memory decoys = getActiveHawaladars();

require(decoys.length >= RING_SIZE - 2, "Pool too small");

transfers[_commitment] = Transfer(_commitment, _hawaladar, _amount, _token, false);

IERC20(_token).transferFrom(msg.sender, address(this), _amount);

emit HundiSent(_commitment, _hawaladar, decoys);

}

// Auto-fetch recent active hawaladars

function getActiveHawaladars() internal view returns (address[] memory) {

// Implementation: Scan recent TransferCompleted events for unique msg.sender

// Return newest RING_SIZE-2 addresses + randomization

}

// Anonymous relay (ZK proof)

function relayHundi(uint256 _groupId, uint256 _nullifierHash, uint256 _signal, bytes32 _commitment) external {

verifyProof(_groupId, _nullifierHash, _signal); // Semaphore ZK

// Propagate secret privately to next hop

repScore[msg.sender]++;

_mint(msg.sender, repScore[msg.sender]);

}

// Final claim with secret

function claimHundi(bytes32 _commitment, bytes32 _secret) external {

Transfer storage t = transfers[_commitment];

require(keccak256(abi.encodePacked(_secret)) == t.commitment, "Wrong secret");

require(msg.sender == t.recipientHawaladar, "Not recipient");

require(!t.settled, "Already claimed");

t.settled = true;

IERC20(t.token).transfer(msg.sender, t.amount);

}

}

```

## Privacy Guarantees

| Metric | Hundi | Monero | Bitcoin |

|--------|--------|---------|---------|

| **Sender Anonymity** | Auto-ring 11 decoys | Ring signatures | None |

| **Route Privacy** | Network-wide broadcast | Output mixing | Public |

| **User Effort** | 3 inputs (amt/addr/secret) | Wallet default | Full exposure |

| **Gas Cost** | ~150k (ring) | N/A (native) | 21k (basic) |

## Network Effects

**Bootstrap**: Early users (your trading contacts) earn HREP NFTs → become decoys → attract more users

**Reputation**: NFT serial # = successful transfers; higher ID = trusted hawaladar

**Discovery**: P2P gossip (libp2p) shares active hawaladars; frontend indexes recent claims

**Offsets**: Hawaladars settle repeated business via direct swaps (your grid trading strength)

## Deployment Roadmap

```

Phase 1: Testnet (1 week)

└─ Remix IDE → Sepolia → Basic HTLC

Phase 2: Frontend (2 weeks)

└─ React + Rabby Wallet → 1-click UX

└─ OrbitDB for hawaladar discovery

Phase 3: Mainnet (Month 1)

└─ Monad deployment (<$0.01 fees)

└─ Airdrop 1M HREP to first 1000 users

Phase 4: Scale (Q2 2026)

└─ Cross-chain (LayerZero bridges)

└─ Mobile app (React Native)

```

## Economic Model

```

Fees: 0.3% → HREP stakers (protocol owned)

Rep NFTs: Soulbound, tradeable after 100 tx

Burn: 10% fee on bad claims (slashing)

Incentives: 50% fees → ring liquidity rewards

```