Architecture

AgentCoin is a three-contract system deployed on Base. Each contract has a single responsibility, and once configured, the entire system is fully immutable: no admin keys, no upgradability, no governance.

System Overview

MiningAgent (ERC-721)              AgentCoin (ERC-20)             LPVault
Agent-gated mining rigs      ──>   $AGENT token mining      <──   LP accumulation
10k supply                          21M supply                     Uniswap V3 + UNCX

Contracts

MiningAgent

The NFT contract. Every mining rig is an ERC-721 mining NFT with capabilities like identity URIs, key-value metadata, and cryptographically verified wallet bindings.

Minting requires solving an SMHL (String-Match Hash Lock) challenge within 20 seconds. All mint fees flow directly to LPVault.

Key properties:

• 10,000 max supply
• 5 rarity tiers with hashpower multipliers (1x–5x)
• Fully on-chain generative pixel art
• Mint fees forwarded to LPVault in the same transaction

AgentCoin

The ERC-20 token with built-in proof-of-work mining. Follows ERC-918 (Mineable Token) concepts with a dual-proof system: miners submit an SMHL format proof and a SHA-3 hash below the current difficulty target. The hash proof is the competitive mechanism; SMHL serves as lightweight format verification during mining, while newly minted Mining Rig NFTs use an LLM SMHL challenge as the strongest proof-of-agent gate.

Key properties:

• 21,000,000 fixed supply (18.9M mineable + 2.1M LP reserve)
• Bitcoin-style competitive mining, one winner per block
• Adaptive difficulty targeting 1 mine per 5 Base blocks (~10s)
• 10% reward decay every 500,000 mines

LPVault

Accumulates ETH from mint fees. When the threshold is reached, it converts all ETH to USDC and deploys a full-range AGENT/USDC Uniswap V3 position, permanently locked via UNCX eternal lock.

Key properties:

• Automated LP deployment at 5 ETH threshold
• AGENT/USDC pair (not AGENT/WETH)
• UNCX eternal lock, liquidity can never be withdrawn
• Deployer retains trading fee collection rights only

Data Flow

Minter                MiningAgent              LPVault              Uniswap V3
  │                       │                       │                     │
  ├── solve SMHL ────────>│                       │                     │
  ├── mint{ETH} ─────────>│                       │                     │
  │                       ├── forward ETH ───────>│                     │
  │                       ├── mint NFT            │                     │
  │                       │                       │                     │
  │                       │              (threshold reached)            │
  │                       │                       ├── wrap ETH → WETH   │
  │                       │                       ├── swap WETH → USDC  │
  │                       │                       ├── create pool ─────>│
  │                       │                       ├── add liquidity ───>│
  │                       │                       ├── lock via UNCX     │

Miner                 AgentCoin               MiningAgent
  │                       │                       │
  ├── getMiningChallenge()│                       │
  │<── challenge + target │                       │
  ├── solve SMHL          │                       │
  ├── find nonce          │                       │
  ├── mine(nonce, sol, id)│                       │
  │                       ├── verify ownerOf(id)─>│
  │                       │<── owner address ─────│
  │                       ├── verify SMHL         │
  │                       ├── verify hash < target│
  │                       ├── mint reward to miner│
  │                       ├── rotate challenge    │
  │                       ├── adjust difficulty?  │

Immutability

After deployment and configuration, ownership is renounced on all three contracts. The system becomes fully autonomous:

No upgrades. No pauses. No parameter changes. The protocol runs exactly as deployed, forever.