Treasury.sol

Overview

The Treasury.sol contract is the central economic management system for the Nexis Appchain. It implements a 40/30/30 distribution model that automatically allocates incoming funds (from slashing, penalties, and direct deposits) across three strategic pools: Treasury (40%), Insurance (30%), and Rewards (30%). Contract Location: /nexis-appchain/packages/contracts-bedrock/contracts/Treasury.sol

Key Features

Automated Distribution: All inflows automatically split across three pools
Multi-Asset Support: Manage ETH and ERC20 tokens separately
Role-Based Access: Granular control over deposits, withdrawals, and reward distribution
Slashing Integration: Receive and distribute slashed stakes from Agents.sol
Penalty Collection: Handle early withdrawal penalties with automatic pooling
Reward Distribution: Controlled payout system for agent incentives

Architecture

Distribution Model

40/30/30 Split

Pool	Allocation	Purpose	Access
Treasury	40%	Protocol development, operations, governance	`WITHDRAW_ROLE`
Insurance	30%	Risk coverage, emergency funds, user protection	`WITHDRAW_ROLE`
Rewards	30%	Agent incentives, performance bonuses, ecosystem growth	`REWARDS_ROLE`

Formula:

For amount X:
- Treasury Pool += X × 0.40
- Insurance Pool += X × 0.30
- Rewards Pool += X × 0.30

Core Data Structures

DistributionConfig

struct DistributionConfig {
    uint16 treasuryBps;   // Treasury allocation in basis points (default: 4000 = 40%)
    uint16 insuranceBps;  // Insurance allocation in basis points (default: 3000 = 30%)
    uint16 rewardsBps;    // Rewards allocation in basis points (default: 3000 = 30%)
}

Note: Total must equal 10,000 BPS (100%)

PoolBalances

struct PoolBalances {
    uint256 treasury;   // Treasury pool balance
    uint256 insurance;  // Insurance pool balance
    uint256 rewards;    // Rewards pool balance
}

Contract Roles

Role	Bytes32 Identifier	Description
`DEFAULT_ADMIN_ROLE`	`0x00`	Administrative control over contract configuration
`REWARDS_ROLE`	`keccak256("REWARDS_ROLE")`	Distribute rewards from rewards pool
`WITHDRAW_ROLE`	`keccak256("WITHDRAW_ROLE")`	Withdraw from treasury and insurance pools
`INFLOW_ROLE`	`keccak256("INFLOW_ROLE")`	Handle slashing and penalty inflows (typically Agents.sol)

Inflow Methods

handleSlash

Receive and distribute slashed stakes from Agents.sol.

function handleSlash(
    uint256 agentId,
    address asset,
    uint256 amount
) external payable onlyRole(INFLOW_ROLE)

Parameters:

agentId: Agent whose stake was slashed
asset: Asset address (address(0) for ETH)
amount: Slashed amount

Payment:

For ETH: msg.value must equal amount
For ERC20: Tokens must be transferred before calling

Behavior:

Splits amount according to distribution config (40/30/30)
Updates respective pool balances

Emits:

SlashHandled(uint256 indexed agentId, address indexed asset, uint256 amount, uint256 treasuryShare, uint256 insuranceShare, uint256 rewardsShare)

Example (Called by Agents.sol):

// In Agents.sol slashStake function:
if (asset == ETH_ASSET) {
    treasury.handleSlash{value: amount}(agentId, asset, amount);
} else {
    IERC20(asset).safeTransfer(address(treasury), amount);
    treasury.handleSlash(agentId, asset, amount);
}

handleEarlyExitPenalty

Receive and distribute early withdrawal penalties.

function handleEarlyExitPenalty(
    uint256 agentId,
    address asset,
    uint256 amount
) external payable onlyRole(INFLOW_ROLE)

Parameters:

agentId: Agent who exited early
asset: Asset address
amount: Penalty amount

Payment:

Same as handleSlash

Emits:

EarlyExitHandled(uint256 indexed agentId, address indexed asset, uint256 amount, uint256 treasuryShare, uint256 insuranceShare, uint256 rewardsShare)

Example (Called by Agents.sol):

// In Agents.sol claimWithdrawals function:
if (penaltyAmount > 0) {
    if (asset == ETH_ASSET) {
        treasury.handleEarlyExitPenalty{value: penaltyAmount}(agentId, asset, penaltyAmount);
    } else {
        IERC20(asset).safeTransfer(address(treasury), penaltyAmount);
        treasury.handleEarlyExitPenalty(agentId, asset, penaltyAmount);
    }
}

recordRewardDeposit

Record direct deposits to rewards pool (e.g., from dispute resolutions, fundraising).

function recordRewardDeposit(
    address asset,
    uint256 amount
) external payable

Parameters:

asset: Asset address
amount: Deposit amount

Payment:

For ETH: msg.value must equal amount
For ERC20: Tokens must be transferred before calling

Behavior:

Adds full amount to rewards pool (no distribution split)

Emits: RewardsDeposited(address indexed source, address indexed asset, uint256 amount) Example (Manual Deposit):

const treasuryContract = new ethers.Contract(TREASURY_ADDRESS, TREASURY_ABI, signer);

// Deposit ETH to rewards pool
const depositAmount = ethers.utils.parseEther("10.0");
await treasuryContract.recordRewardDeposit(
    ethers.constants.AddressZero,
    depositAmount,
    { value: depositAmount }
);

console.log("10 ETH deposited to rewards pool");

Example (From Tasks.sol Dispute Resolution):

// In Tasks.sol resolveDispute function:
if (!refundCreator && task.reward > 0) {
    if (task.asset == ETH_ASSET) {
        treasury.recordRewardDeposit{value: task.reward}(task.asset, task.reward);
    } else {
        IERC20(task.asset).safeTransfer(address(treasury), task.reward);
        treasury.recordRewardDeposit(task.asset, task.reward);
    }
}

Outflow Methods

distributeReward

Distribute rewards from rewards pool to an agent.

function distributeReward(
    uint256 agentId,
    address asset,
    uint256 amount,
    address recipient,
    string calldata reason
) external nonReentrant onlyRole(REWARDS_ROLE)

Parameters:

agentId: Agent receiving reward
asset: Asset address
amount: Reward amount
recipient: Recipient address (address(0) = agent owner)
reason: Human-readable justification

Requirements:

Agent must be registered in Agents.sol
Rewards pool must have sufficient balance

Emits: RewardPaid(uint256 indexed agentId, address indexed asset, address indexed recipient, uint256 amount, string reason) Example:

const rewardAmount = ethers.utils.parseEther("0.5");
const reason = "Top performer in Q1 2025";

await treasuryContract.distributeReward(
    agentId,
    ethers.constants.AddressZero,  // ETH
    rewardAmount,
    ethers.constants.AddressZero,  // recipient = agent owner
    reason
);

console.log(`Distributed ${ethers.utils.formatEther(rewardAmount)} ETH to agent ${agentId}`);

Use Cases:

Performance bonuses for high-reputation agents
Ecosystem growth incentives
Bug bounty rewards
Competition prizes

withdrawTreasury

Withdraw from treasury pool (governance/development funds).

function withdrawTreasury(
    address asset,
    uint256 amount,
    address to
) external nonReentrant onlyRole(WITHDRAW_ROLE)

Parameters:

asset: Asset address
amount: Withdrawal amount
to: Recipient address

Requirements:

Treasury pool must have sufficient balance

Emits: PoolWithdrawn(bytes32 indexed pool, address indexed asset, address indexed to, uint256 amount) Example:

// Withdraw 100 ETH for protocol development
const withdrawAmount = ethers.utils.parseEther("100");
const devWallet = "0xDev...";

await treasuryContract.withdrawTreasury(
    ethers.constants.AddressZero,
    withdrawAmount,
    devWallet
);

withdrawInsurance

Withdraw from insurance pool (risk coverage, emergency funds).

function withdrawInsurance(
    address asset,
    uint256 amount,
    address to
) external nonReentrant onlyRole(WITHDRAW_ROLE)

Parameters:

Same as withdrawTreasury

Emits: PoolWithdrawn(...) Example:

// Emergency withdrawal for exploit coverage
const coverageAmount = ethers.utils.parseEther("50");
const claimantAddress = "0xUser...";

await treasuryContract.withdrawInsurance(
    ethers.constants.AddressZero,
    coverageAmount,
    claimantAddress
);

View Functions

poolBalances

Query pool balances for a specific asset.

function poolBalances(address asset) external view returns (PoolBalances memory)

Returns:

struct PoolBalances {
    uint256 treasury;
    uint256 insurance;
    uint256 rewards;
}

Example:

const balances = await treasuryContract.poolBalances(ethers.constants.AddressZero);

console.log("Treasury Pool ETH Balances:");
console.log(`  Treasury:  ${ethers.utils.formatEther(balances.treasury)} ETH`);
console.log(`  Insurance: ${ethers.utils.formatEther(balances.insurance)} ETH`);
console.log(`  Rewards:   ${ethers.utils.formatEther(balances.rewards)} ETH`);

// Calculate totals
const total = balances.treasury.add(balances.insurance).add(balances.rewards);
console.log(`  Total:     ${ethers.utils.formatEther(total)} ETH`);

// Calculate percentages
const treasuryPct = balances.treasury.mul(100).div(total);
const insurancePct = balances.insurance.mul(100).div(total);
const rewardsPct = balances.rewards.mul(100).div(total);

console.log(`\nAllocation: ${treasuryPct}% / ${insurancePct}% / ${rewardsPct}%`);

rewardsBalance

Query rewards pool balance for an asset.

function rewardsBalance(address asset) external view returns (uint256)

Example:

const rewardsETH = await treasuryContract.rewardsBalance(ethers.constants.AddressZero);
console.log(`Available for rewards: ${ethers.utils.formatEther(rewardsETH)} ETH`);

Admin Functions

setDistribution

Update distribution configuration (must sum to 10,000 BPS).

function setDistribution(
    uint16 treasuryBps,
    uint16 insuranceBps,
    uint16 rewardsBps
) external onlyRole(DEFAULT_ADMIN_ROLE)

Parameters:

treasuryBps: Treasury allocation (0-10000)
insuranceBps: Insurance allocation (0-10000)
rewardsBps: Rewards allocation (0-10000)

Requirements:

treasuryBps + insuranceBps + rewardsBps == 10000

Emits: DistributionUpdated(uint16 treasuryBps, uint16 insuranceBps, uint16 rewardsBps) Example:

// Change to 50/25/25 split
await treasuryContract.setDistribution(
    5000,  // 50% treasury
    2500,  // 25% insurance
    2500   // 25% rewards
);

console.log("Distribution updated to 50/25/25");

Governance Considerations:

Changes apply to future inflows only (existing balances unchanged)
Consider community governance for distribution changes
Document rationale for changes on-chain or IPFS

setAgents

Update Agents.sol contract reference.

function setAgents(address newAgents) external onlyRole(DEFAULT_ADMIN_ROLE)

Parameters:

newAgents: New Agents contract address

Example:

const newAgentsAddress = "0xNewAgents...";
await treasuryContract.setAgents(newAgentsAddress);

Events Reference

DistributionUpdated

event DistributionUpdated(
    uint16 treasuryBps,
    uint16 insuranceBps,
    uint16 rewardsBps
);

SlashHandled

event SlashHandled(
    uint256 indexed agentId,
    address indexed asset,
    uint256 amount,
    uint256 treasuryShare,
    uint256 insuranceShare,
    uint256 rewardsShare
);

EarlyExitHandled

event EarlyExitHandled(
    uint256 indexed agentId,
    address indexed asset,
    uint256 amount,
    uint256 treasuryShare,
    uint256 insuranceShare,
    uint256 rewardsShare
);

RewardsDeposited

event RewardsDeposited(
    address indexed source,
    address indexed asset,
    uint256 amount
);

RewardPaid

event RewardPaid(
    uint256 indexed agentId,
    address indexed asset,
    address indexed recipient,
    uint256 amount,
    string reason
);

PoolWithdrawn

event PoolWithdrawn(
    bytes32 indexed pool,
    address indexed asset,
    address indexed to,
    uint256 amount
);

Economic Flow Diagrams

Slashing Flow

Early Exit Flow

Reward Distribution Flow

Integration Examples

Monitor Treasury Activity

// Monitor slash events
treasuryContract.on("SlashHandled", (agentId, asset, amount, treasury, insurance, rewards, event) => {
    console.log(`Agent ${agentId} slashed: ${ethers.utils.formatEther(amount)} ETH`);
    console.log(`  Treasury: ${ethers.utils.formatEther(treasury)}`);
    console.log(`  Insurance: ${ethers.utils.formatEther(insurance)}`);
    console.log(`  Rewards: ${ethers.utils.formatEther(rewards)}`);
});

// Monitor reward distributions
treasuryContract.on("RewardPaid", (agentId, asset, recipient, amount, reason, event) => {
    console.log(`Reward paid to agent ${agentId}: ${ethers.utils.formatEther(amount)} ETH`);
    console.log(`Reason: ${reason}`);
    console.log(`Recipient: ${recipient}`);
});

// Monitor withdrawals
treasuryContract.on("PoolWithdrawn", (pool, asset, to, amount, event) => {
    const poolName = pool === ethers.utils.formatBytes32String("TREASURY") ? "Treasury" : "Insurance";
    console.log(`${poolName} withdrawal: ${ethers.utils.formatEther(amount)} ETH to ${to}`);
});

Treasury Dashboard

async function getTreasuryDashboard() {
    const assets = [
        { name: "ETH", address: ethers.constants.AddressZero },
        { name: "USDC", address: USDC_ADDRESS },
        { name: "USDT", address: USDT_ADDRESS }
    ];

    for (const asset of assets) {
        const balances = await treasuryContract.poolBalances(asset.address);
        const total = balances.treasury.add(balances.insurance).add(balances.rewards);

        console.log(`\n${asset.name} Treasury:`);
        console.log(`  Treasury Pool:  ${formatAmount(balances.treasury, asset)}`);
        console.log(`  Insurance Pool: ${formatAmount(balances.insurance, asset)}`);
        console.log(`  Rewards Pool:   ${formatAmount(balances.rewards, asset)}`);
        console.log(`  Total:          ${formatAmount(total, asset)}`);
    }

    // Check distribution config
    const config = await treasuryContract.distribution();
    console.log(`\nDistribution Config: ${config.treasuryBps / 100}% / ${config.insuranceBps / 100}% / ${config.rewardsBps / 100}%`);
}

function formatAmount(amount, asset) {
    if (asset.name === "ETH") {
        return ethers.utils.formatEther(amount) + " ETH";
    } else {
        return ethers.utils.formatUnits(amount, 6) + " " + asset.name; // Assuming USDC/USDT have 6 decimals
    }
}

// Run dashboard
await getTreasuryDashboard();

Automated Reward Distribution

async function distributePerformanceRewards() {
    const agentsContract = new ethers.Contract(AGENTS_ADDRESS, AGENTS_ABI, signer);
    const treasuryContract = new ethers.Contract(TREASURY_ADDRESS, TREASURY_ABI, signer);

    // Get top agents by reputation
    const agents = await agentsContract.listAgents(0, 100);
    const sortedAgents = agents
        .sort((a, b) => b.weightedReputation - a.weightedReputation)
        .slice(0, 10);  // Top 10 agents

    // Calculate rewards (e.g., 10 ETH pool distributed proportionally)
    const totalRewardPool = ethers.utils.parseEther("10");
    const totalReputation = sortedAgents.reduce(
        (sum, agent) => sum + Math.max(0, agent.weightedReputation),
        0
    );

    for (const agent of sortedAgents) {
        if (agent.weightedReputation <= 0) continue;

        const rewardShare = totalRewardPool
            .mul(agent.weightedReputation)
            .div(totalReputation);

        await treasuryContract.distributeReward(
            agent.agentId,
            ethers.constants.AddressZero,
            rewardShare,
            ethers.constants.AddressZero,
            "Q1 2025 Performance Reward - Top 10 Agent"
        );

        console.log(`Rewarded agent ${agent.agentId}: ${ethers.utils.formatEther(rewardShare)} ETH`);
    }
}

Security Considerations

Reentrancy Protection

All withdrawal and distribution functions use nonReentrant modifier to prevent reentrancy attacks.

Role-Based Access Control

Separation of Duties: Withdraw role cannot distribute rewards, and vice versa
INFLOW_ROLE: Typically granted only to Agents.sol
Multi-sig Recommended: Use Gnosis Safe or similar for admin roles

Balance Integrity

Distribution always sums to 100% (enforced by BPS check)
Pool balances tracked per asset independently
No cross-asset contamination

Upgrade Safety

UUPS proxy pattern for upgrades
Only DEFAULT_ADMIN_ROLE can authorize upgrades

Gas Optimization

Batch Rewards: Distribute multiple rewards in a single transaction
Asset Grouping: Withdraw multiple assets in sequence to amortize setup costs
Event Monitoring: Use indexed event parameters for efficient filtering

Governance Considerations

Distribution Adjustments

Scenario 1: Bear Market (Prioritize Treasury)

await treasuryContract.setDistribution(
    6000,  // 60% treasury (increased reserves)
    2000,  // 20% insurance
    2000   // 20% rewards
);

Scenario 2: Growth Phase (Prioritize Rewards)

await treasuryContract.setDistribution(
    3000,  // 30% treasury
    2000,  // 20% insurance
    5000   // 50% rewards (incentivize growth)
);

Scenario 3: High Risk Period (Prioritize Insurance)

await treasuryContract.setDistribution(
    3000,  // 30% treasury
    5000,  // 50% insurance (increased coverage)
    2000   // 20% rewards
);

Agents.sol - Sends slashed stakes and penalties to treasury
Tasks.sol - Sends disputed task rewards to treasury
Subscriptions.sol - May integrate for protocol fee collection

ABI & Deployment

ABI Location: /nexis-appchain/packages/contracts-bedrock/artifacts/contracts/Treasury.sol/Treasury.json Network Addresses:

Network	Contract Address	Explorer
Nexis Mainnet	`0x...`	View Contract
Nexis Testnet	`0x...`	View Contract

Support & Resources

GitHub: nexis-network/nexis-appchain
Discord: Nexis Community
Documentation: nex-t1.ai

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Legal

​Treasury.sol

​Overview

​Key Features

​Architecture

​Distribution Model

​40/30/30 Split

​Core Data Structures

​DistributionConfig

​PoolBalances

​Contract Roles

​Inflow Methods

​handleSlash

​handleEarlyExitPenalty

​recordRewardDeposit

​Outflow Methods

​distributeReward

​withdrawTreasury

​withdrawInsurance

​View Functions

​poolBalances

​rewardsBalance

​Admin Functions

​setDistribution

​setAgents

​Events Reference

​DistributionUpdated

​SlashHandled

​EarlyExitHandled

​RewardsDeposited

​RewardPaid

​PoolWithdrawn

​Economic Flow Diagrams

​Slashing Flow

​Early Exit Flow

​Reward Distribution Flow

​Integration Examples

​Monitor Treasury Activity

​Treasury Dashboard

​Automated Reward Distribution

​Security Considerations

​Reentrancy Protection

​Role-Based Access Control

​Balance Integrity

​Upgrade Safety

​Gas Optimization

​Governance Considerations

​Distribution Adjustments

​Related Contracts

​ABI & Deployment

​Support & Resources

Treasury.sol

Overview

Key Features

Architecture

Distribution Model

40/30/30 Split

Core Data Structures

DistributionConfig

PoolBalances

Contract Roles

Inflow Methods

handleSlash

handleEarlyExitPenalty

recordRewardDeposit

Outflow Methods

distributeReward

withdrawTreasury

withdrawInsurance

View Functions

poolBalances

rewardsBalance

Admin Functions

setDistribution

setAgents

Events Reference

DistributionUpdated

SlashHandled

EarlyExitHandled

RewardsDeposited

RewardPaid

PoolWithdrawn

Economic Flow Diagrams

Slashing Flow

Early Exit Flow

Reward Distribution Flow

Integration Examples

Monitor Treasury Activity

Treasury Dashboard

Automated Reward Distribution

Security Considerations

Reentrancy Protection

Role-Based Access Control

Balance Integrity

Upgrade Safety

Gas Optimization

Governance Considerations

Distribution Adjustments

Related Contracts

ABI & Deployment

Support & Resources