hood// SPDX-License-Identifier: MIT
pragma solidity 0.8.26;
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { Ownable2Step } from "@openzeppelin/contracts/access/Ownable2Step.sol";
import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { IHooks } from "@uniswap/v4-core/interfaces/IHooks.sol";
import { IPoolManager } from "@uniswap/v4-core/interfaces/IPoolManager.sol";
import { IUnlockCallback } from "@uniswap/v4-core/interfaces/callback/IUnlockCallback.sol";
import { TransientStateLibrary } from "@uniswap/v4-core/libraries/TransientStateLibrary.sol";
import { Currency } from "@uniswap/v4-core/types/Currency.sol";
import { PoolKey } from "@uniswap/v4-core/types/PoolKey.sol";
import { ModifyLiquidityParams } from "@uniswap/v4-core/types/PoolOperation.sol";
/// @title Removable FUND canary liquidity position
/// @notice Owns one fixed direct PoolManager position; principal removal remains owner-controlled
/// unless the separate irreversible lock switch is deliberately invoked later.
contract FUNDCanaryLiquidity is Ownable2Step, ReentrancyGuard, IUnlockCallback {
using SafeERC20 for IERC20;
using TransientStateLibrary for IPoolManager;
IPoolManager public immutable poolManager;
address public immutable lpFeeRecipient;
int24 public immutable tickLower;
int24 public immutable tickUpper;
uint160 public immutable initialSqrtPriceX96;
PoolKey private _poolKey;
uint128 public positionLiquidity;
bool public liquidityLockedForever;
bool private _unlocking;
bytes32 private _callbackHash;
struct CallbackData {
address payer;
int256 liquidityDelta;
uint256 maxAmount0;
uint256 maxAmount1;
}
error ZeroAddress();
error InvalidConfiguration();
error InvalidAmount();
error InvalidDeadline();
error InvalidUnlockCallback();
error LiquidityAlreadyLocked();
error LimitExceeded(uint256 actual, uint256 maximum);
error SettlementMismatch(uint256 expected, uint256 actual);
event PoolInitialized(uint160 sqrtPriceX96);
event LiquidityChanged(
int256 liquidityDelta, uint256 amount0, uint256 amount1, uint128 positionLiquidity
);
event FeesCollected(uint256 amount0, uint256 amount1, address indexed recipient);
event LiquidityLockedForever(uint128 lockedLiquidity);
constructor(
IPoolManager poolManager_,
address fund,
address weth,
IHooks hook,
uint24 fee,
int24 tickSpacing,
int24 tickLower_,
int24 tickUpper_,
uint160 initialSqrtPriceX96_,
address initialOwner,
address lpFeeRecipient_
) Ownable(initialOwner) {
if (
address(poolManager_) == address(0) || fund == address(0) || weth == address(0)
|| address(hook) == address(0) || initialOwner == address(0)
|| lpFeeRecipient_ == address(0)
) revert ZeroAddress();
if (
tickSpacing <= 0 || tickLower_ >= tickUpper_ || tickLower_ % tickSpacing != 0
|| tickUpper_ % tickSpacing != 0 || initialSqrtPriceX96_ == 0
) revert InvalidConfiguration();
(Currency currency0, Currency currency1) = fund < weth
? (Currency.wrap(fund), Currency.wrap(weth))
: (Currency.wrap(weth), Currency.wrap(fund));
poolManager = poolManager_;
lpFeeRecipient = lpFeeRecipient_;
tickLower = tickLower_;
tickUpper = tickUpper_;
initialSqrtPriceX96 = initialSqrtPriceX96_;
_poolKey = PoolKey({
currency0: currency0,
currency1: currency1,
fee: fee,
tickSpacing: tickSpacing,
hooks: hook
});
}
function poolKey() external view returns (PoolKey memory) {
return _poolKey;
}
function initializePool() external onlyOwner {
poolManager.initialize(_poolKey, initialSqrtPriceX96);
emit PoolInitialized(initialSqrtPriceX96);
}
function addLiquidity(
uint128 liquidity,
uint256 maxAmount0,
uint256 maxAmount1,
uint48 deadline
) external onlyOwner nonReentrant returns (uint256 amount0, uint256 amount1) {
if (liquidity == 0 || liquidity > uint128(type(int128).max)) revert InvalidAmount();
if (block.timestamp > deadline) revert InvalidDeadline();
(amount0, amount1) = _modify(
CallbackData({
payer: msg.sender,
liquidityDelta: int256(uint256(liquidity)),
maxAmount0: maxAmount0,
maxAmount1: maxAmount1
})
);
positionLiquidity += liquidity;
emit LiquidityChanged(int256(uint256(liquidity)), amount0, amount1, positionLiquidity);
}
function removeLiquidity(
uint128 liquidity,
uint256 minimumAmount0,
uint256 minimumAmount1,
uint48 deadline
) external onlyOwner nonReentrant returns (uint256 amount0, uint256 amount1) {
if (liquidityLockedForever) revert LiquidityAlreadyLocked();
if (liquidity == 0 || liquidity > positionLiquidity) revert InvalidAmount();
if (block.timestamp > deadline) revert InvalidDeadline();
(amount0, amount1) = _modify(
CallbackData({
payer: msg.sender,
liquidityDelta: -int256(uint256(liquidity)),
maxAmount0: type(uint256).max,
maxAmount1: type(uint256).max
})
);
if (amount0 < minimumAmount0) revert LimitExceeded(amount0, minimumAmount0);
if (amount1 < minimumAmount1) revert LimitExceeded(amount1, minimumAmount1);
positionLiquidity -= liquidity;
emit LiquidityChanged(-int256(uint256(liquidity)), amount0, amount1, positionLiquidity);
}
function collectFees(uint48 deadline)
external
onlyOwner
nonReentrant
returns (uint256 amount0, uint256 amount1)
{
if (block.timestamp > deadline) revert InvalidDeadline();
(amount0, amount1) = _modify(
CallbackData({ payer: msg.sender, liquidityDelta: 0, maxAmount0: 0, maxAmount1: 0 })
);
emit FeesCollected(amount0, amount1, lpFeeRecipient);
}
/// @notice Optional production action. The canary runbook forbids invoking it.
function lockLiquidityForever() external onlyOwner {
if (liquidityLockedForever) revert LiquidityAlreadyLocked();
liquidityLockedForever = true;
emit LiquidityLockedForever(positionLiquidity);
}
function unlockCallback(bytes calldata rawData) external returns (bytes memory) {
if (
msg.sender != address(poolManager) || !_unlocking || keccak256(rawData) != _callbackHash
) revert InvalidUnlockCallback();
CallbackData memory data = abi.decode(rawData, (CallbackData));
poolManager.modifyLiquidity(
_poolKey,
ModifyLiquidityParams({
tickLower: tickLower,
tickUpper: tickUpper,
liquidityDelta: data.liquidityDelta,
salt: bytes32(0)
}),
bytes("")
);
int256 delta0 = poolManager.currencyDelta(address(this), _poolKey.currency0);
int256 delta1 = poolManager.currencyDelta(address(this), _poolKey.currency1);
uint256 amount0 = delta0 < 0 ? uint256(-delta0) : uint256(delta0);
uint256 amount1 = delta1 < 0 ? uint256(-delta1) : uint256(delta1);
if (data.liquidityDelta > 0) {
if (delta0 > 0 || delta1 > 0) revert InvalidConfiguration();
if (amount0 > data.maxAmount0) revert LimitExceeded(amount0, data.maxAmount0);
if (amount1 > data.maxAmount1) revert LimitExceeded(amount1, data.maxAmount1);
if (delta0 < 0) _settle(_poolKey.currency0, data.payer, amount0);
if (delta1 < 0) _settle(_poolKey.currency1, data.payer, amount1);
} else {
if (delta0 < 0 || delta1 < 0) revert InvalidConfiguration();
if (delta0 > 0) poolManager.take(_poolKey.currency0, lpFeeRecipient, amount0);
if (delta1 > 0) poolManager.take(_poolKey.currency1, lpFeeRecipient, amount1);
}
return abi.encode(amount0, amount1);
}
function _modify(CallbackData memory data) private returns (uint256 amount0, uint256 amount1) {
bytes memory encoded = abi.encode(data);
_unlocking = true;
_callbackHash = keccak256(encoded);
(amount0, amount1) = abi.decode(poolManager.unlock(encoded), (uint256, uint256));
_callbackHash = bytes32(0);
_unlocking = false;
}
function _settle(Currency currency, address payer, uint256 amount) private {
poolManager.sync(currency);
IERC20(Currency.unwrap(currency)).safeTransferFrom(payer, address(poolManager), amount);
uint256 settled = poolManager.settle();
if (settled != amount) revert SettlementMismatch(amount, settled);
}
}[
{
"type": "constructor",
"inputs": [
{
"name": "poolManager_",
"type": "address",
"internalType": "contract IPoolManager"
},
{
"name": "fund",
"type": "address",
"internalType": "address"
},
{
"name": "weth",
"type": "address",
"internalType": "address"
},
{
"name": "hook",
"type": "address",
"internalType": "contract IHooks"
},
{
"name": "fee",
"type": "uint24",
"internalType": "uint24"
},
{
"name": "tickSpacing",
"type": "int24",
"internalType": "int24"
},
{
"name": "tickLower_",
"type": "int24",
"internalType": "int24"
},
{
"name": "tickUpper_",
"type": "int24",
"internalType": "int24"
},
{
"name": "initialSqrtPriceX96_",
"type": "uint160",
"internalType": "uint160"
},
{
"name": "initialOwner",
"type": "address",
"internalType": "address"
},
{
"name": "lpFeeRecipient_",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "InvalidAmount",
"type": "error",
"inputs": []
},
{
"name": "InvalidConfiguration",
"type": "error",
"inputs": []
},
{
"name": "InvalidDeadline",
"type": "error",
"inputs": []
},
{
"name": "InvalidUnlockCallback",
"type": "error",
"inputs": []
},
{
"name": "LimitExceeded",
"type": "error",
"inputs": [
{
"name": "actual",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "maximum",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "LiquidityAlreadyLocked",
"type": "error",
"inputs": []
},
{
"name": "OwnableInvalidOwner",
"type": "error",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "OwnableUnauthorizedAccount",
"type": "error",
"inputs": [
{
"name": "account",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "ReentrancyGuardReentrantCall",
"type": "error",
"inputs": []
},
{
"name": "SafeERC20FailedOperation",
"type": "error",
"inputs": [
{
"name": "token",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "SettlementMismatch",
"type": "error",
"inputs": [
{
"name": "expected",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "actual",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "ZeroAddress",
"type": "error",
"inputs": []
},
{
"name": "FeesCollected",
"type": "event",
"inputs": [
{
"name": "amount0",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
},
{
"name": "amount1",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
},
{
"name": "recipient",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "LiquidityChanged",
"type": "event",
"inputs": [
{
"name": "liquidityDelta",
"type": "int256",
"indexed": false,
"internalType": "int256"
},
{
"name": "amount0",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
},
{
"name": "amount1",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
},
{
"name": "positionLiquidity",
"type": "uint128",
"indexed": false,
"internalType": "uint128"
}
],
"anonymous": false
},
{
"name": "LiquidityLockedForever",
"type": "event",
"inputs": [
{
"name": "lockedLiquidity",
"type": "uint128",
"indexed": false,
"internalType": "uint128"
}
],
"anonymous": false
},
{
"name": "OwnershipTransferStarted",
"type": "event",
"inputs": [
{
"name": "previousOwner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "newOwner",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "OwnershipTransferred",
"type": "event",
"inputs": [
{
"name": "previousOwner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "newOwner",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "PoolInitialized",
"type": "event",
"inputs": [
{
"name": "sqrtPriceX96",
"type": "uint160",
"indexed": false,
"internalType": "uint160"
}
],
"anonymous": false
},
{
"name": "acceptOwnership",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "addLiquidity",
"type": "function",
"inputs": [
{
"name": "liquidity",
"type": "uint128",
"internalType": "uint128"
},
{
"name": "maxAmount0",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "maxAmount1",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "deadline",
"type": "uint48",
"internalType": "uint48"
}
],
"outputs": [
{
"name": "amount0",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "amount1",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "nonpayable"
},
{
"name": "collectFees",
"type": "function",
"inputs": [
{
"name": "deadline",
"type": "uint48",
"internalType": "uint48"
}
],
"outputs": [
{
"name": "amount0",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "amount1",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "nonpayable"
},
{
"name": "initialSqrtPriceX96",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint160",
"internalType": "uint160"
}
],
"stateMutability": "view"
},
{
"name": "initializePool",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "liquidityLockedForever",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "view"
},
{
"name": "lockLiquidityForever",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "lpFeeRecipient",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "owner",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "pendingOwner",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "poolKey",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "tuple",
"components": [
{
"name": "currency0",
"type": "address",
"internalType": "Currency"
},
{
"name": "currency1",
"type": "address",
"internalType": "Currency"
},
{
"name": "fee",
"type": "uint24",
"internalType": "uint24"
},
{
"name": "tickSpacing",
"type": "int24",
"internalType": "int24"
},
{
"name": "hooks",
"type": "address",
"internalType": "contract IHooks"
}
],
"internalType": "struct PoolKey"
}
],
"stateMutability": "view"
},
{
"name": "poolManager",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "contract IPoolManager"
}
],
"stateMutability": "view"
},
{
"name": "positionLiquidity",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint128",
"internalType": "uint128"
}
],
"stateMutability": "view"
},
{
"name": "removeLiquidity",
"type": "function",
"inputs": [
{
"name": "liquidity",
"type": "uint128",
"internalType": "uint128"
},
{
"name": "minimumAmount0",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "minimumAmount1",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "deadline",
"type": "uint48",
"internalType": "uint48"
}
],
"outputs": [
{
"name": "amount0",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "amount1",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "nonpayable"
},
{
"name": "renounceOwnership",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "tickLower",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "int24",
"internalType": "int24"
}
],
"stateMutability": "view"
},
{
"name": "tickUpper",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "int24",
"internalType": "int24"
}
],
"stateMutability": "view"
},
{
"name": "transferOwnership",
"type": "function",
"inputs": [
{
"name": "newOwner",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "unlockCallback",
"type": "function",
"inputs": [
{
"name": "rawData",
"type": "bytes",
"internalType": "bytes"
}
],
"outputs": [
{
"name": "",
"type": "bytes",
"internalType": "bytes"
}
],
"stateMutability": "nonpayable"
}
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| Token | Symbol | Balance | Price | Value |
|---|---|---|---|---|
 Dih (DIH) | DIH | 1 | $0.0000102 | $0 |
| Type | Age | Block | Details |
|---|---|---|---|
| no cross-chain L1↔L2 transactions for this address | |||
| Transaction Hash | Method | Block | Age | From | To | Amount | Token | ||
|---|---|---|---|---|---|---|---|---|---|
| 0x5056974e…6b7b7e | Transfer | 20,642,882 | 21 days agoMon, 27 Jul 2026 09:59:17 UTC | 0xcaf7…5d11 | IN | 0x3de5…c69b | $0.001 DIH | Dih (DIH) |
| Transaction Hash | Method | Block | Age | From | To | Type | Item | ||
|---|---|---|---|---|---|---|---|---|---|
| no NFT transfers for this address yet | |||||||||
| Block | Age | Parent Transaction Hash | Type | Method | From | To | Value | |
|---|---|---|---|---|---|---|---|---|
| no internal transactions found for this address yet (traced blocks + on-demand) | ||||||||
| Txn Hash | Age | Event | Topics / Data |
|---|---|---|---|
| 0xb92565…a37fcb | 26 days agoWed, 22 Jul 2026 11:17:27 UTC | 0x527a33…f6cd | data: 0xffffffffffffffffff…00000000 |
| 0xd99838…7bf545 | 26 days agoWed, 22 Jul 2026 11:17:21 UTC | 0x1b4adb…ce9f | [0] 0x000000000000…2eb9f83f data: 0x000000000000000000…852f4774 |
| 0xd07693…797dcb | 27 days agoTue, 21 Jul 2026 18:00:16 UTC | 0x1b4adb…ce9f | [0] 0x000000000000…2eb9f83f data: 0x000000000000000000…09245d84 |
| 0x20f789…e9398b | 27 days agoTue, 21 Jul 2026 16:21:48 UTC | 0x527a33…f6cd | data: 0x000000000000000000…7a64e405 |
| 0xa2b7e1…cbfc43 | 27 days agoTue, 21 Jul 2026 16:21:42 UTC | 0xb1b3d5…ebca | data: 0x000000000000000000…0d379822 |
| 0xcd26ae…7cc080 | 27 days agoTue, 21 Jul 2026 16:20:41 UTC | 0x8be007…57e0 | [0] 0x000000000000…00000000 [1] 0x000000000000…2eb9f83f |
| Transaction Hash | Method ? | Block | Age | From | To | Amount | Txn Fee ? | ||
|---|---|---|---|---|---|---|---|---|---|
| 0xb92565…a37fcb | removeLiquidity | 16,382,825 | 26 days agoWed, 22 Jul 2026 11:17:27 UTC | 0x0a72…f83f | IN | FUNDCanaryLiquidity | $0.000 ETH | 0.00001208 | |
| 0xd99838…7bf545 | collectFees | 16,382,768 | 26 days agoWed, 22 Jul 2026 11:17:21 UTC | 0x0a72…f83f | IN | FUNDCanaryLiquidity | $0.000 ETH | 0.00001756 | |
| 0xd07693…797dcb | collectFees | 15,761,852 | 27 days agoTue, 21 Jul 2026 18:00:16 UTC | 0x0a72…f83f | IN | FUNDCanaryLiquidity | $0.000 ETH | 0.00001843 | |
| 0x20f789…e9398b | addLiquidity | 15,702,868 | 27 days agoTue, 21 Jul 2026 16:21:48 UTC | 0x0a72…f83f | IN | FUNDCanaryLiquidity | $0.000 ETH | 0.00002377 | |
| 0xa2b7e1…cbfc43 | initializePool | 15,702,804 | 27 days agoTue, 21 Jul 2026 16:21:42 UTC | 0x0a72…f83f | IN | FUNDCanaryLiquidity | $0.000 ETH | 0.00000433 |