Contract 0x8D7408C2b3154F9f97fc6dd24cd36143908d1E52

 
Txn Hash
Block
From
To
Value [Txn Fee]
0xd14e964953526cb1c455cb91ef3b285c3a32412e3f796362ee1787a48f23d01084588102021-06-20 10:36:359 hrs ago0x66b870ddf78c975af5cd8edc6de25eca81791de1 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00089073
0x1001e0d37d5f6d63d5dfa9c37bd1cfaff4798cf744ab6a0bb07af6f8cf3d76b084470582021-06-20 0:47:4018 hrs 49 mins ago0x7e9f1dab257928da4d82fc40ae872bd89fb91dd1 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00096549
0xa025fdad814cba0563b8d93e99f0d60882ce9b43c96e4c28b6115a989bac7a0984469772021-06-20 0:43:3718 hrs 53 mins ago0x7e9f1dab257928da4d82fc40ae872bd89fb91dd1 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001241895
0x5f459ca32a6dfc45b574abaef7fe15e5fef57b8bc86b36d63750f1487f8cc51c84452932021-06-19 23:19:1620 hrs 18 mins ago0x1905b0ac7fd4cedbd49889ba0e98bd35096b533d IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00101741
0xd7932a1a6ad85cbfc4014d820d8819ed55cf322feb9318fb7e8f34c91f4ca58084423402021-06-19 20:51:3722 hrs 45 mins ago0x9ec2cb75023ff885ced6ffe4c6aa0439d729a032 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001039975
0xf2702df495cc688cb856341aef55d98940f2c0ff3cf59e2ca7797890897af8b884401522021-06-19 19:02:131 day 35 mins ago0x4d4eec6334a5fc4808f7bbcafe5c208e971f9d46 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001241775
0x895a47b112a4271cbcacf58c9283cf089b96eb3b46c5b59606cb58aeb75c0a2a84386262021-06-19 17:45:421 day 1 hr ago0x8a84c2575c7948f92e1bb22113279e09c6f56c3c IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00101741
0x22cfd80cc6f2683cd668c0641ad27fdba715a6949b387861c929854112957f0d84336012021-06-19 13:29:451 day 6 hrs ago0xf9a54a8d58a287308ebb35420d4479303cdc0307 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00087271
0x9f4771e5b4aff738ec1dff7ff96dd96f702c514f2a2a544d8b153ba742d1133284243352021-06-19 5:42:111 day 13 hrs ago0x86c0eb3c7794a10a0db7ae2f9abcea19d35a4321 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00109211
0xb7311cca3d37e3c142b8ca737dd2a94ed54b8bdb652e078a449468c6494ee62284215072021-06-19 3:20:071 day 16 hrs ago0x87b6853dde210043e570d591985c795330f4ba54 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001149045
0x2f08a70b7235e4b87b5a8f980e56332efc37c508ac8e2bc3c55b7b9124460c1e84211322021-06-19 3:00:371 day 16 hrs ago0x282f6974618929a246e38751aadee682be8298c4 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001275845
0x3e7933b70f9cb2e9a1f73658057cc31fc0999c4da4a524cd250a9453cfdae50784199832021-06-19 2:03:091 day 17 hrs ago0x48f49527383670be666ec2a3a01efd6826ba8a8f IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001200725
0x33742f811d7af6058ff945970d2f8de0d9c1711b71bad66fee81335cba98a4c084119622021-06-18 19:17:162 days 20 mins ago0xf9a54a8d58a287308ebb35420d4479303cdc0307 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00101741
0x9dd9790a9e1b5327ddf523fb333158aa0c54c11ebd2a8b40cc849784922a56d684043632021-06-18 12:54:092 days 6 hrs ago0xbfb1ac13b6720bdd7a8a61b949bd3a8b869b871b IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00109193
0x3eb296366b6943b5c809088b9bd09639e4d413c2e2f4aff1c02c870c26de59ef83998932021-06-18 9:09:322 days 10 hrs ago0xe496a0255b015405081d62ccd04a3efae484279d IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00101729
0x7dace48e07e0c1f21c98f3c96eab7f69cdecc041cf9534df30ddd79b3b1f7d4183962592021-06-18 6:06:092 days 13 hrs ago0x574df6bbedd2b10b835291b667dee39b9b890d17 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001275785
0x3eba566fdd03646d2bc264ea3b6afee7d537d18031b2c54acc8598806aed7ba983927052021-06-18 3:06:232 days 16 hrs ago0x6fbcfb55013d048c6698a2c4bf2e78bb76b0e4a8 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001275845
0x0efccc7298b5bb631a36e974a54b64bf2212bd54d10d442770ab31438fa6056583776672021-06-17 14:28:123 days 5 hrs ago0x480ccbb125823bce4d6d57a0fb4c042a647a05fb IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00107813
0x443d7b7c84ddd942461dad97e960a00e0516f875a677be3c56ab9fc1a66f5a8a83730572021-06-17 10:34:463 days 9 hrs ago0xd4972c7a6ddae55ae4329e00b615024095ed26d3 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001241895
0x81ba9f7363a15dd79be37945893bdd658f40735cf9b2ce54350e93fdbfee84de83677242021-06-17 6:03:463 days 13 hrs ago0x48f49527383670be666ec2a3a01efd6826ba8a8f IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001074045
0xe41e905b78dff04d835c95f445f0d507672a88b079ec001821c5d1b7585f09bd83676242021-06-17 5:58:463 days 13 hrs ago0x48f49527383670be666ec2a3a01efd6826ba8a8f IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.000822535
0xba067910d901be61d8da1d70d7d682831c8962136aab2799470240854bdab95c83636682021-06-17 2:39:583 days 16 hrs ago0xe496a0255b015405081d62ccd04a3efae484279d IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001241775
0x5d0d89b15256ca82d16e2b97d7dbb69c0fc793e35cb4b7ce6f6b8d09ee8d434e83531122021-06-16 17:50:054 days 1 hr ago0x7dd6af227362f4115e060f39c00791ffcf4230d8 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.001200845
0x485239e86a7af1cf9a0f9f01ffdbdeb8741a5bcf66a37de50e5ad1091651e49883507642021-06-16 15:51:194 days 3 hrs ago0x59d6ab05514e1ac05c7c705f827b2f1796257cc0 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00089061
0x52a59d150da596cf9076e801de21f8d366851699d090a234ebb26bf9caafcd1983448072021-06-16 10:51:544 days 8 hrs ago0xf9a54a8d58a287308ebb35420d4479303cdc0307 IN  0x8d7408c2b3154f9f97fc6dd24cd36143908d1e520 BNB0.00101729
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Contract Source Code Verified (Similar Match)
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xc6a752948627bECaB5474a10821Df73fF4771a49

Contract Name:
Vyper_contract

Compiler Version
vyper:0.2.11

Optimization Enabled:
N/A

Other Settings:
, None license

Contract Source Code (Vyper language format)

# @version 0.2.11
# (c) Curve.Fi, 2020

from vyper.interfaces import ERC20

interface CurveToken:
    def totalSupply() -> uint256: view
    def mint(_to: address, _value: uint256) -> bool: nonpayable
    def burnFrom(_to: address, _value: uint256) -> bool: nonpayable

interface Curve:
    def coins(i: uint256) -> address: view
    def get_virtual_price() -> uint256: view
    def calc_token_amount(amounts: uint256[BASE_N_COINS], deposit: bool) -> uint256: view
    def calc_withdraw_one_coin(_token_amount: uint256, i: int128) -> uint256: view
    def fee() -> uint256: view
    def get_dy(i: int128, j: int128, dx: uint256) -> uint256: view
    def get_dy_underlying(i: int128, j: int128, dx: uint256) -> uint256: view
    def exchange(i: int128, j: int128, dx: uint256, min_dy: uint256): nonpayable
    def add_liquidity(amounts: uint256[BASE_N_COINS], min_mint_amount: uint256): nonpayable
    def remove_liquidity_one_coin(_token_amount: uint256, i: int128, min_amount: uint256): nonpayable

interface FeeConverter:
    def convertFees(): nonpayable


# Events
event TokenExchange:
    buyer: indexed(address)
    sold_id: int128
    tokens_sold: uint256
    bought_id: int128
    tokens_bought: uint256

event TokenExchangeUnderlying:
    buyer: indexed(address)
    sold_id: int128
    tokens_sold: uint256
    bought_id: int128
    tokens_bought: uint256

event AddLiquidity:
    provider: indexed(address)
    token_amounts: uint256[N_COINS]
    fees: uint256[N_COINS]
    invariant: uint256
    token_supply: uint256

event RemoveLiquidity:
    provider: indexed(address)
    token_amounts: uint256[N_COINS]
    fees: uint256[N_COINS]
    token_supply: uint256

event RemoveLiquidityOne:
    provider: indexed(address)
    token_amount: uint256
    coin_amount: uint256
    token_supply: uint256

event RemoveLiquidityImbalance:
    provider: indexed(address)
    token_amounts: uint256[N_COINS]
    fees: uint256[N_COINS]
    invariant: uint256
    token_supply: uint256

event CommitNewAdmin:
    deadline: indexed(uint256)
    admin: indexed(address)

event NewAdmin:
    admin: indexed(address)

event CommitNewFee:
    deadline: indexed(uint256)
    fee: uint256
    admin_fee: uint256

event NewFee:
    fee: uint256
    admin_fee: uint256

event RampA:
    old_A: uint256
    new_A: uint256
    initial_time: uint256
    future_time: uint256

event StopRampA:
    A: uint256
    t: uint256


N_COINS: constant(int128) = 2
MAX_COIN: constant(int128) = N_COINS - 1

FEE_DENOMINATOR: constant(uint256) = 10 ** 10
PRECISION: constant(uint256) = 10 ** 18  # The precision to convert to
PRECISION_MUL: constant(uint256[N_COINS]) =  [1, 1]
RATES: constant(uint256[N_COINS]) = [1000000000000000000, 1000000000000000000]
BASE_N_COINS: constant(int128) = 3

# An asset which may have a transfer fee (USDT)
FEE_INDEX: constant(int128) = 3

MAX_ADMIN_FEE: constant(uint256) = 10 * 10 ** 9
MAX_FEE: constant(uint256) = 5 * 10 ** 9
MAX_A: constant(uint256) = 10 ** 6
MAX_A_CHANGE: constant(uint256) = 10

ADMIN_ACTIONS_DELAY: constant(uint256) = 3 * 86400
MIN_RAMP_TIME: constant(uint256) = 86400

coins: public(address[N_COINS])
balances: public(uint256[N_COINS])
fee: public(uint256)  # fee * 1e10
admin_fee: public(uint256)  # admin_fee * 1e10

owner: public(address)
fee_converter: public(address)
lp_token: public(address)

# Token corresponding to the pool is always the last one
BASE_CACHE_EXPIRES: constant(int128) = 10 * 60  # 10 min
base_pool: public(address)
base_virtual_price: public(uint256)
base_cache_updated: public(uint256)
base_coins: public(address[BASE_N_COINS])

A_PRECISION: constant(uint256) = 100
initial_A: public(uint256)
future_A: public(uint256)
initial_A_time: public(uint256)
future_A_time: public(uint256)

admin_actions_deadline: public(uint256)
transfer_ownership_deadline: public(uint256)
future_fee: public(uint256)
future_admin_fee: public(uint256)
future_owner: public(address)

is_killed: bool
kill_deadline: uint256
KILL_DEADLINE_DT: constant(uint256) = 2 * 30 * 86400


@external
def __init__(
    _owner: address,
    _coins: address[N_COINS],
    _pool_token: address,
    _base_pool: address,
    _A: uint256,
    _fee: uint256,
    _admin_fee: uint256,
    _fee_converter: address,
):
    """
    @notice Contract constructor
    @param _owner Contract owner address
    @param _coins Addresses of ERC20 conracts of coins
    @param _pool_token Address of the token representing LP share
    @param _base_pool Address of the base pool (which will have a virtual price)
    @param _A Amplification coefficient multiplied by n * (n - 1)
    @param _fee Fee to charge for exchanges
    @param _admin_fee Admin fee
    """
    for i in range(N_COINS):
        assert _coins[i] != ZERO_ADDRESS
    self.coins = _coins
    self.initial_A = _A * A_PRECISION
    self.future_A = _A * A_PRECISION
    self.fee = _fee
    self.admin_fee = _admin_fee
    self.owner = _owner
    self.kill_deadline = block.timestamp + KILL_DEADLINE_DT
    self.lp_token = _pool_token
    self.fee_converter = _fee_converter

    self.base_pool = _base_pool
    self.base_virtual_price = Curve(_base_pool).get_virtual_price()
    self.base_cache_updated = block.timestamp
    for i in range(BASE_N_COINS):
        base_coin: address = Curve(_base_pool).coins(convert(i, uint256))
        self.base_coins[i] = base_coin

        # approve underlying coins for infinite transfers
        response: Bytes[32] = raw_call(
            base_coin,
            concat(
                method_id("approve(address,uint256)"),
                convert(_base_pool, bytes32),
                convert(MAX_UINT256, bytes32),
            ),
            max_outsize=32,
        )
        if len(response) > 0:
            assert convert(response, bool)


@view
@internal
def _A() -> uint256:
    """
    Handle ramping A up or down
    """
    t1: uint256 = self.future_A_time
    A1: uint256 = self.future_A

    if block.timestamp < t1:
        A0: uint256 = self.initial_A
        t0: uint256 = self.initial_A_time
        # Expressions in uint256 cannot have negative numbers, thus "if"
        if A1 > A0:
            return A0 + (A1 - A0) * (block.timestamp - t0) / (t1 - t0)
        else:
            return A0 - (A0 - A1) * (block.timestamp - t0) / (t1 - t0)

    else:  # when t1 == 0 or block.timestamp >= t1
        return A1


@view
@external
def A() -> uint256:
    return self._A() / A_PRECISION


@view
@external
def A_precise() -> uint256:
    return self._A()


@view
@internal
def _xp(_vp_rate: uint256) -> uint256[N_COINS]:
    result: uint256[N_COINS] = RATES
    result[MAX_COIN] = _vp_rate  # virtual price for the metacurrency
    for i in range(N_COINS):
        result[i] = result[i] * self.balances[i] / PRECISION
    return result


@pure
@internal
def _xp_mem(_vp_rate: uint256, _balances: uint256[N_COINS]) -> uint256[N_COINS]:
    result: uint256[N_COINS] = RATES
    result[MAX_COIN] = _vp_rate  # virtual price for the metacurrency
    for i in range(N_COINS):
        result[i] = result[i] * _balances[i] / PRECISION
    return result


@internal
def _vp_rate() -> uint256:
    if block.timestamp > self.base_cache_updated + BASE_CACHE_EXPIRES:
        vprice: uint256 = Curve(self.base_pool).get_virtual_price()
        self.base_virtual_price = vprice
        self.base_cache_updated = block.timestamp
        return vprice
    else:
        return self.base_virtual_price


@internal
@view
def _vp_rate_ro() -> uint256:
    if block.timestamp > self.base_cache_updated + BASE_CACHE_EXPIRES:
        return Curve(self.base_pool).get_virtual_price()
    else:
        return self.base_virtual_price


@pure
@internal
def _get_D(_xp: uint256[N_COINS], _amp: uint256) -> uint256:
    S: uint256 = 0
    Dprev: uint256 = 0

    for _x in _xp:
        S += _x
    if S == 0:
        return 0

    D: uint256 = S
    Ann: uint256 = _amp * N_COINS
    for _i in range(255):
        D_P: uint256 = D
        for _x in _xp:
            D_P = D_P * D / (_x * N_COINS)  # If division by 0, this will be borked: only withdrawal will work. And that is good
        Dprev = D
        D = (Ann * S / A_PRECISION + D_P * N_COINS) * D / ((Ann - A_PRECISION) * D / A_PRECISION + (N_COINS + 1) * D_P)
        # Equality with the precision of 1
        if D > Dprev:
            if D - Dprev <= 1:
                return D
        else:
            if Dprev - D <= 1:
                return D
    # convergence typically occurs in 4 rounds or less, this should be unreachable!
    # if it does happen the pool is borked and LPs can withdraw via `remove_liquidity`
    raise


@view
@internal
def _get_D_mem(_vp_rate: uint256, _balances: uint256[N_COINS], _amp: uint256) -> uint256:
    return self._get_D(self._xp_mem(_vp_rate, _balances), _amp)


@view
@external
def get_virtual_price() -> uint256:
    """
    @notice The current virtual price of the pool LP token
    @dev Useful for calculating profits
    @return LP token virtual price normalized to 1e18
    """
    amp: uint256 = self._A()
    vp_rate: uint256 = self._vp_rate_ro()
    xp: uint256[N_COINS] = self._xp(vp_rate)
    D: uint256 = self._get_D(xp, amp)
    # D is in the units similar to DAI (e.g. converted to precision 1e18)
    # When balanced, D = n * x_u - total virtual value of the portfolio
    token_supply: uint256 = CurveToken(self.lp_token).totalSupply()
    return D * PRECISION / token_supply


@view
@external
def calc_token_amount(_amounts: uint256[N_COINS], _is_deposit: bool) -> uint256:
    """
    @notice Calculate addition or reduction in token supply from a deposit or withdrawal
    @dev This calculation accounts for slippage, but not fees.
         Needed to prevent front-running, not for precise calculations!
    @param _amounts Amount of each coin being deposited
    @param _is_deposit set True for deposits, False for withdrawals
    @return Expected amount of LP tokens received
    """
    amp: uint256 = self._A()
    vp_rate: uint256 = self._vp_rate_ro()
    balances: uint256[N_COINS] = self.balances
    D0: uint256 = self._get_D_mem(vp_rate, balances, amp)
    for i in range(N_COINS):
        if _is_deposit:
            balances[i] += _amounts[i]
        else:
            balances[i] -= _amounts[i]
    D1: uint256 = self._get_D_mem(vp_rate, balances, amp)
    token_amount: uint256 = CurveToken(self.lp_token).totalSupply()
    diff: uint256 = 0
    if _is_deposit:
        diff = D1 - D0
    else:
        diff = D0 - D1
    return diff * token_amount / D0


@external
@nonreentrant('lock')
def add_liquidity(_amounts: uint256[N_COINS], _min_mint_amount: uint256) -> uint256:
    """
    @notice Deposit coins into the pool
    @param _amounts List of amounts of coins to deposit
    @param _min_mint_amount Minimum amount of LP tokens to mint from the deposit
    @return Amount of LP tokens received by depositing
    """
    assert not self.is_killed  # dev: is killed

    amp: uint256 = self._A()
    vp_rate: uint256 = self._vp_rate()
    old_balances: uint256[N_COINS] = self.balances

    # Initial invariant
    D0: uint256 = self._get_D_mem(vp_rate, old_balances, amp)

    lp_token: address = self.lp_token
    token_supply: uint256 = CurveToken(lp_token).totalSupply()
    new_balances: uint256[N_COINS] = old_balances

    for i in range(N_COINS):
        if token_supply == 0:
            assert _amounts[i] > 0  # dev: initial deposit requires all coins
        # balances store amounts of c-tokens
        new_balances[i] = old_balances[i] + _amounts[i]

    # Invariant after change
    D1: uint256 = self._get_D_mem(vp_rate, new_balances, amp)
    assert D1 > D0

    # We need to recalculate the invariant accounting for fees
    # to calculate fair user's share
    fees: uint256[N_COINS] = empty(uint256[N_COINS])
    D2: uint256 = D1
    mint_amount: uint256 = 0
    if token_supply > 0:
        fee: uint256 = self.fee * N_COINS / (4 * (N_COINS - 1))
        admin_fee: uint256 = self.admin_fee
        # Only account for fees if we are not the first to deposit
        for i in range(N_COINS):
            ideal_balance: uint256 = D1 * old_balances[i] / D0
            difference: uint256 = 0
            if ideal_balance > new_balances[i]:
                difference = ideal_balance - new_balances[i]
            else:
                difference = new_balances[i] - ideal_balance
            fees[i] = fee * difference / FEE_DENOMINATOR
            self.balances[i] = new_balances[i] - (fees[i] * admin_fee / FEE_DENOMINATOR)
            new_balances[i] -= fees[i]
        D2 = self._get_D_mem(vp_rate, new_balances, amp)
        mint_amount = token_supply * (D2 - D0) / D0
    else:
        self.balances = new_balances
        mint_amount = D1  # Take the dust if there was any

    assert mint_amount >= _min_mint_amount, "Slippage screwed you"

    # Take coins from the sender
    for i in range(N_COINS):
        if _amounts[i] > 0:
            # "safeTransferFrom" which works for ERC20s which return bool or not
            response: Bytes[32] = raw_call(
                self.coins[i],
                concat(
                    method_id("transferFrom(address,address,uint256)"),
                    convert(msg.sender, bytes32),
                    convert(self, bytes32),
                    convert(_amounts[i], bytes32),
                ),
                max_outsize=32,
            )
            if len(response) > 0:
                assert convert(response, bool)  # dev: failed transfer
            # end "safeTransferFrom"

    # Mint pool tokens
    CurveToken(lp_token).mint(msg.sender, mint_amount)

    log AddLiquidity(msg.sender, _amounts, fees, D1, token_supply + mint_amount)

    return mint_amount


@view
@internal
def _get_y(i: int128, j: int128, x: uint256, _xp: uint256[N_COINS]) -> uint256:
    """
    Calculate x[j] if one makes x[i] = x

    Done by solving quadratic equation iteratively.
    x_1**2 + x_1 * (sum' - (A*n**n - 1) * D / (A * n**n)) = D ** (n + 1) / (n ** (2 * n) * prod' * A)
    x_1**2 + b*x_1 = c

    x_1 = (x_1**2 + c) / (2*x_1 + b)
    """
    # x in the input is converted to the same price/precision

    assert i != j       # dev: same coin
    assert j >= 0       # dev: j below zero
    assert j < N_COINS  # dev: j above N_COINS

    # should be unreachable, but good for safety
    assert i >= 0
    assert i < N_COINS

    A: uint256 = self._A()
    D: uint256 = self._get_D(_xp, A)
    Ann: uint256 = A * N_COINS
    c: uint256 = D
    S: uint256 = 0
    _x: uint256 = 0
    y_prev: uint256 = 0

    for _i in range(N_COINS):
        if _i == i:
            _x = x
        elif _i != j:
            _x = _xp[_i]
        else:
            continue
        S += _x
        c = c * D / (_x * N_COINS)
    c = c * D * A_PRECISION / (Ann * N_COINS)
    b: uint256 = S + D * A_PRECISION / Ann  # - D
    y: uint256 = D
    for _i in range(255):
        y_prev = y
        y = (y*y + c) / (2 * y + b - D)
        # Equality with the precision of 1
        if y > y_prev:
            if y - y_prev <= 1:
                return y
        else:
            if y_prev - y <= 1:
                return y
    raise


@view
@external
def get_dy(i: int128, j: int128, _dx: uint256) -> uint256:
    rates: uint256[N_COINS] = RATES
    rates[MAX_COIN] = self._vp_rate_ro()
    xp: uint256[N_COINS] = self._xp(rates[MAX_COIN])

    x: uint256 = xp[i] + (_dx * rates[i] / PRECISION)
    y: uint256 = self._get_y(i, j, x, xp)
    dy: uint256 = xp[j] - y - 1
    fee: uint256 = self.fee * dy / FEE_DENOMINATOR
    return (dy - fee) * PRECISION / rates[j]


@view
@external
def get_dy_underlying(i: int128, j: int128, _dx: uint256) -> uint256:
    # dx and dy in underlying units
    vp_rate: uint256 = self._vp_rate_ro()
    xp: uint256[N_COINS] = self._xp(vp_rate)
    precisions: uint256[N_COINS] = PRECISION_MUL
    base_pool: address = self.base_pool

    # Use base_i or base_j if they are >= 0
    base_i: int128 = i - MAX_COIN
    base_j: int128 = j - MAX_COIN
    meta_i: int128 = MAX_COIN
    meta_j: int128 = MAX_COIN
    if base_i < 0:
        meta_i = i
    if base_j < 0:
        meta_j = j

    x: uint256 = 0
    if base_i < 0:
        x = xp[i] + _dx * precisions[i]
    else:
        if base_j < 0:
            # i is from BasePool
            # At first, get the amount of pool tokens
            base_inputs: uint256[BASE_N_COINS] = empty(uint256[BASE_N_COINS])
            base_inputs[base_i] = _dx
            # Token amount transformed to underlying "dollars"
            x = Curve(base_pool).calc_token_amount(base_inputs, True) * vp_rate / PRECISION
            # Accounting for deposit/withdraw fees approximately
            x -= x * Curve(base_pool).fee() / (2 * FEE_DENOMINATOR)
            # Adding number of pool tokens
            x += xp[MAX_COIN]
        else:
            # If both are from the base pool
            return Curve(base_pool).get_dy(base_i, base_j, _dx)

    # This pool is involved only when in-pool assets are used
    y: uint256 = self._get_y(meta_i, meta_j, x, xp)
    dy: uint256 = xp[meta_j] - y - 1
    dy = (dy - self.fee * dy / FEE_DENOMINATOR)

    # If output is going via the metapool
    if base_j < 0:
        dy /= precisions[meta_j]
    else:
        # j is from BasePool
        # The fee is already accounted for
        dy = Curve(base_pool).calc_withdraw_one_coin(dy * PRECISION / vp_rate, base_j)

    return dy


@external
@nonreentrant('lock')
def exchange(i: int128, j: int128, _dx: uint256, _min_dy: uint256) -> uint256:
    """
    @notice Perform an exchange between two coins
    @dev Index values can be found via the `coins` public getter method
    @param i Index value for the coin to send
    @param j Index valie of the coin to recieve
    @param _dx Amount of `i` being exchanged
    @param _min_dy Minimum amount of `j` to receive
    @return Actual amount of `j` received
    """
    assert not self.is_killed  # dev: is killed
    rates: uint256[N_COINS] = RATES
    rates[MAX_COIN] = self._vp_rate()

    old_balances: uint256[N_COINS] = self.balances
    xp: uint256[N_COINS] = self._xp_mem(rates[MAX_COIN], old_balances)

    x: uint256 = xp[i] + _dx * rates[i] / PRECISION
    y: uint256 = self._get_y(i, j, x, xp)

    dy: uint256 = xp[j] - y - 1  # -1 just in case there were some rounding errors
    dy_fee: uint256 = dy * self.fee / FEE_DENOMINATOR

    # Convert all to real units
    dy = (dy - dy_fee) * PRECISION / rates[j]
    assert dy >= _min_dy, "Too few coins in result"

    dy_admin_fee: uint256 = dy_fee * self.admin_fee / FEE_DENOMINATOR
    dy_admin_fee = dy_admin_fee * PRECISION / rates[j]

    # Change balances exactly in same way as we change actual ERC20 coin amounts
    self.balances[i] = old_balances[i] + _dx
    # When rounding errors happen, we undercharge admin fee in favor of LP
    self.balances[j] = old_balances[j] - dy - dy_admin_fee

    response: Bytes[32] = raw_call(
        self.coins[i],
        concat(
            method_id("transferFrom(address,address,uint256)"),
            convert(msg.sender, bytes32),
            convert(self, bytes32),
            convert(_dx, bytes32),
        ),
        max_outsize=32,
    )
    if len(response) > 0:
        assert convert(response, bool)

    response = raw_call(
        self.coins[j],
        concat(
            method_id("transfer(address,uint256)"),
            convert(msg.sender, bytes32),
            convert(dy, bytes32),
        ),
        max_outsize=32,
    )
    if len(response) > 0:
        assert convert(response, bool)

    log TokenExchange(msg.sender, i, _dx, j, dy)

    return dy


@external
@nonreentrant('lock')
def exchange_underlying(i: int128, j: int128, _dx: uint256, _min_dy: uint256) -> uint256:
    """
    @notice Perform an exchange between two underlying coins
    @dev Index values can be found via the `underlying_coins` public getter method
    @param i Index value for the underlying coin to send
    @param j Index valie of the underlying coin to recieve
    @param _dx Amount of `i` being exchanged
    @param _min_dy Minimum amount of `j` to receive
    @return Actual amount of `j` received
    """
    assert not self.is_killed  # dev: is killed
    rates: uint256[N_COINS] = RATES
    rates[MAX_COIN] = self._vp_rate()
    base_pool: address = self.base_pool

    # Use base_i or base_j if they are >= 0
    base_i: int128 = i - MAX_COIN
    base_j: int128 = j - MAX_COIN
    meta_i: int128 = MAX_COIN
    meta_j: int128 = MAX_COIN
    if base_i < 0:
        meta_i = i
    if base_j < 0:
        meta_j = j
    dy: uint256 = 0

    # Addresses for input and output coins
    input_coin: address = ZERO_ADDRESS
    output_coin: address = ZERO_ADDRESS
    if base_i < 0:
        input_coin = self.coins[i]
    else:
        input_coin = self.base_coins[base_i]
    if base_j < 0:
        output_coin = self.coins[j]
    else:
        output_coin = self.base_coins[base_j]

    # Handle potential Tether fees
    dx_w_fee: uint256 = _dx
    if i == FEE_INDEX:
        dx_w_fee = ERC20(input_coin).balanceOf(self)

    response: Bytes[32] = raw_call(
        input_coin,
        concat(
            method_id("transferFrom(address,address,uint256)"),
            convert(msg.sender, bytes32),
            convert(self, bytes32),
            convert(_dx, bytes32),
        ),
        max_outsize=32,
    )
    if len(response) > 0:
        assert convert(response, bool)

    # Handle potential Tether fees
    if i == FEE_INDEX:
        dx_w_fee = ERC20(input_coin).balanceOf(self) - dx_w_fee

    if base_i < 0 or base_j < 0:
        old_balances: uint256[N_COINS] = self.balances
        xp: uint256[N_COINS] = self._xp_mem(rates[MAX_COIN], old_balances)

        x: uint256 = 0
        if base_i < 0:
            x = xp[i] + dx_w_fee * rates[i] / PRECISION
        else:
            # i is from BasePool
            # At first, get the amount of pool tokens
            base_inputs: uint256[BASE_N_COINS] = empty(uint256[BASE_N_COINS])
            base_inputs[base_i] = dx_w_fee
            coin_i: address = self.coins[MAX_COIN]
            # Deposit and measure delta
            x = ERC20(coin_i).balanceOf(self)
            Curve(base_pool).add_liquidity(base_inputs, 0)
            # Need to convert pool token to "virtual" units using rates
            # dx is also different now
            dx_w_fee = ERC20(coin_i).balanceOf(self) - x
            x = dx_w_fee * rates[MAX_COIN] / PRECISION
            # Adding number of pool tokens
            x += xp[MAX_COIN]

        y: uint256 = self._get_y(meta_i, meta_j, x, xp)

        # Either a real coin or token
        dy = xp[meta_j] - y - 1  # -1 just in case there were some rounding errors
        dy_fee: uint256 = dy * self.fee / FEE_DENOMINATOR

        # Convert all to real units
        # Works for both pool coins and real coins
        dy = (dy - dy_fee) * PRECISION / rates[meta_j]

        dy_admin_fee: uint256 = dy_fee * self.admin_fee / FEE_DENOMINATOR
        dy_admin_fee = dy_admin_fee * PRECISION / rates[meta_j]

        # Change balances exactly in same way as we change actual ERC20 coin amounts
        self.balances[meta_i] = old_balances[meta_i] + dx_w_fee
        # When rounding errors happen, we undercharge admin fee in favor of LP
        self.balances[meta_j] = old_balances[meta_j] - dy - dy_admin_fee

        # Withdraw from the base pool if needed
        if base_j >= 0:
            out_amount: uint256 = ERC20(output_coin).balanceOf(self)
            Curve(base_pool).remove_liquidity_one_coin(dy, base_j, 0)
            dy = ERC20(output_coin).balanceOf(self) - out_amount

        assert dy >= _min_dy, "Too few coins in result"

    else:
        # If both are from the base pool
        dy = ERC20(output_coin).balanceOf(self)
        Curve(base_pool).exchange(base_i, base_j, dx_w_fee, _min_dy)
        dy = ERC20(output_coin).balanceOf(self) - dy

    # "safeTransfer" which works for ERC20s which return bool or not
    response = raw_call(
        output_coin,
        concat(
            method_id("transfer(address,uint256)"),
            convert(msg.sender, bytes32),
            convert(dy, bytes32),
        ),
        max_outsize=32,
    )  # dev: failed transfer
    if len(response) > 0:
        assert convert(response, bool)  # dev: failed transfer
    # end "safeTransfer"

    log TokenExchangeUnderlying(msg.sender, i, _dx, j, dy)

    return dy


@external
@nonreentrant('lock')
def remove_liquidity(_amount: uint256, _min_amounts: uint256[N_COINS]) -> uint256[N_COINS]:
    """
    @notice Withdraw coins from the pool
    @dev Withdrawal amounts are based on current deposit ratios
    @param _amount Quantity of LP tokens to burn in the withdrawal
    @param _min_amounts Minimum amounts of underlying coins to receive
    @return List of amounts of coins that were withdrawn
    """
    lp_token: address = self.lp_token
    total_supply: uint256 = CurveToken(lp_token).totalSupply()
    amounts: uint256[N_COINS] = empty(uint256[N_COINS])

    for i in range(N_COINS):
        old_balance: uint256 = self.balances[i]
        value: uint256 = old_balance * _amount / total_supply
        assert value >= _min_amounts[i], "Withdrawal resulted in fewer coins than expected"
        self.balances[i] = old_balance - value
        amounts[i] = value
        ERC20(self.coins[i]).transfer(msg.sender, value)

    CurveToken(lp_token).burnFrom(msg.sender, _amount)  # dev: insufficient funds

    log RemoveLiquidity(msg.sender, amounts, empty(uint256[N_COINS]), total_supply - _amount)

    return amounts


@external
@nonreentrant('lock')
def remove_liquidity_imbalance(_amounts: uint256[N_COINS], _max_burn_amount: uint256) -> uint256:
    """
    @notice Withdraw coins from the pool in an imbalanced amount
    @param _amounts List of amounts of underlying coins to withdraw
    @param _max_burn_amount Maximum amount of LP token to burn in the withdrawal
    @return Actual amount of the LP token burned in the withdrawal
    """
    assert not self.is_killed  # dev: is killed

    amp: uint256 = self._A()
    vp_rate: uint256 = self._vp_rate()
    old_balances: uint256[N_COINS] = self.balances
    new_balances: uint256[N_COINS] = old_balances
    D0: uint256 = self._get_D_mem(vp_rate, old_balances, amp)
    for i in range(N_COINS):
        new_balances[i] -= _amounts[i]
    D1: uint256 = self._get_D_mem(vp_rate, new_balances, amp)

    fee: uint256 = self.fee * N_COINS / (4 * (N_COINS - 1))
    admin_fee: uint256 = self.admin_fee
    fees: uint256[N_COINS] = empty(uint256[N_COINS])
    for i in range(N_COINS):
        ideal_balance: uint256 = D1 * old_balances[i] / D0
        difference: uint256 = 0
        if ideal_balance > new_balances[i]:
            difference = ideal_balance - new_balances[i]
        else:
            difference = new_balances[i] - ideal_balance
        fees[i] = fee * difference / FEE_DENOMINATOR
        self.balances[i] = new_balances[i] - (fees[i] * admin_fee / FEE_DENOMINATOR)
        new_balances[i] -= fees[i]
    D2: uint256 = self._get_D_mem(vp_rate, new_balances, amp)

    lp_token: address = self.lp_token
    token_supply: uint256 = CurveToken(lp_token).totalSupply()
    token_amount: uint256 = (D0 - D2) * token_supply / D0
    assert token_amount != 0  # dev: zero tokens burned
    token_amount += 1  # In case of rounding errors - make it unfavorable for the "attacker"
    assert token_amount <= _max_burn_amount, "Slippage screwed you"

    CurveToken(lp_token).burnFrom(msg.sender, token_amount)  # dev: insufficient funds
    for i in range(N_COINS):
        if _amounts[i] != 0:
            ERC20(self.coins[i]).transfer(msg.sender, _amounts[i])

    log RemoveLiquidityImbalance(msg.sender, _amounts, fees, D1, token_supply - token_amount)

    return token_amount


@pure
@internal
def _get_y_D(A: uint256, i: int128, _xp: uint256[N_COINS], D: uint256) -> uint256:
    """
    Calculate x[i] if one reduces D from being calculated for xp to D

    Done by solving quadratic equation iteratively.
    x_1**2 + x_1 * (sum' - (A*n**n - 1) * D / (A * n**n)) = D ** (n + 1) / (n ** (2 * n) * prod' * A)
    x_1**2 + b*x_1 = c

    x_1 = (x_1**2 + c) / (2*x_1 + b)
    """
    # x in the input is converted to the same price/precision

    assert i >= 0  # dev: i below zero
    assert i < N_COINS  # dev: i above N_COINS

    Ann: uint256 = A * N_COINS
    c: uint256 = D
    S: uint256 = 0
    _x: uint256 = 0
    y_prev: uint256 = 0

    for _i in range(N_COINS):
        if _i != i:
            _x = _xp[_i]
        else:
            continue
        S += _x
        c = c * D / (_x * N_COINS)
    c = c * D * A_PRECISION / (Ann * N_COINS)
    b: uint256 = S + D * A_PRECISION / Ann
    y: uint256 = D

    for _i in range(255):
        y_prev = y
        y = (y*y + c) / (2 * y + b - D)
        # Equality with the precision of 1
        if y > y_prev:
            if y - y_prev <= 1:
                return y
        else:
            if y_prev - y <= 1:
                return y
    raise


@view
@internal
def _calc_withdraw_one_coin(_token_amount: uint256, i: int128, _vp_rate: uint256) -> (uint256, uint256, uint256):
    # First, need to calculate
    # * Get current D
    # * Solve Eqn against y_i for D - _token_amount
    amp: uint256 = self._A()
    xp: uint256[N_COINS] = self._xp(_vp_rate)
    D0: uint256 = self._get_D(xp, amp)

    total_supply: uint256 = CurveToken(self.lp_token).totalSupply()
    D1: uint256 = D0 - _token_amount * D0 / total_supply
    new_y: uint256 = self._get_y_D(amp, i, xp, D1)

    fee: uint256 = self.fee * N_COINS / (4 * (N_COINS - 1))
    rates: uint256[N_COINS] = RATES
    rates[MAX_COIN] = _vp_rate

    xp_reduced: uint256[N_COINS] = xp
    dy_0: uint256 = (xp[i] - new_y) * PRECISION / rates[i]  # w/o fees

    for j in range(N_COINS):
        dx_expected: uint256 = 0
        if j == i:
            dx_expected = xp[j] * D1 / D0 - new_y
        else:
            dx_expected = xp[j] - xp[j] * D1 / D0
        xp_reduced[j] -= fee * dx_expected / FEE_DENOMINATOR

    dy: uint256 = xp_reduced[i] - self._get_y_D(amp, i, xp_reduced, D1)
    dy = (dy - 1) * PRECISION / rates[i]  # Withdraw less to account for rounding errors

    return dy, dy_0 - dy, total_supply


@view
@external
def calc_withdraw_one_coin(_token_amount: uint256, i: int128) -> uint256:
    """
    @notice Calculate the amount received when withdrawing a single coin
    @param _token_amount Amount of LP tokens to burn in the withdrawal
    @param i Index value of the coin to withdraw
    @return Amount of coin received
    """
    vp_rate: uint256 = self._vp_rate_ro()
    return self._calc_withdraw_one_coin(_token_amount, i, vp_rate)[0]


@external
@nonreentrant('lock')
def remove_liquidity_one_coin(_token_amount: uint256, i: int128, _min_amount: uint256) -> uint256:
    """
    @notice Withdraw a single coin from the pool
    @param _token_amount Amount of LP tokens to burn in the withdrawal
    @param i Index value of the coin to withdraw
    @param _min_amount Minimum amount of coin to receive
    @return Amount of coin received
    """
    assert not self.is_killed  # dev: is killed

    vp_rate: uint256 = self._vp_rate()
    dy: uint256 = 0
    dy_fee: uint256 = 0
    total_supply: uint256 = 0
    dy, dy_fee, total_supply = self._calc_withdraw_one_coin(_token_amount, i, vp_rate)
    assert dy >= _min_amount, "Not enough coins removed"

    self.balances[i] -= (dy + dy_fee * self.admin_fee / FEE_DENOMINATOR)
    CurveToken(self.lp_token).burnFrom(msg.sender, _token_amount)  # dev: insufficient funds

    ERC20(self.coins[i]).transfer(msg.sender, dy)

    log RemoveLiquidityOne(msg.sender, _token_amount, dy, total_supply - _token_amount)

    return dy


### Admin functions ###
@external
def ramp_A(_future_A: uint256, _future_time: uint256):
    assert msg.sender == self.owner  # dev: only owner
    assert block.timestamp >= self.initial_A_time + MIN_RAMP_TIME
    assert _future_time >= block.timestamp + MIN_RAMP_TIME  # dev: insufficient time

    initial_A: uint256 = self._A()
    future_A_p: uint256 = _future_A * A_PRECISION

    assert _future_A > 0 and _future_A < MAX_A
    if future_A_p < initial_A:
        assert future_A_p * MAX_A_CHANGE >= initial_A
    else:
        assert future_A_p <= initial_A * MAX_A_CHANGE

    self.initial_A = initial_A
    self.future_A = future_A_p
    self.initial_A_time = block.timestamp
    self.future_A_time = _future_time

    log RampA(initial_A, future_A_p, block.timestamp, _future_time)


@external
def stop_ramp_A():
    assert msg.sender == self.owner  # dev: only owner

    current_A: uint256 = self._A()
    self.initial_A = current_A
    self.future_A = current_A
    self.initial_A_time = block.timestamp
    self.future_A_time = block.timestamp
    # now (block.timestamp < t1) is always False, so we return saved A

    log StopRampA(current_A, block.timestamp)


@external
def commit_new_fee(_new_fee: uint256, _new_admin_fee: uint256):
    assert msg.sender == self.owner  # dev: only owner
    assert self.admin_actions_deadline == 0  # dev: active action
    assert _new_fee <= MAX_FEE  # dev: fee exceeds maximum
    assert _new_admin_fee <= MAX_ADMIN_FEE  # dev: admin fee exceeds maximum

    deadline: uint256 = block.timestamp + ADMIN_ACTIONS_DELAY
    self.admin_actions_deadline = deadline
    self.future_fee = _new_fee
    self.future_admin_fee = _new_admin_fee

    log CommitNewFee(deadline, _new_fee, _new_admin_fee)


@external
def apply_new_fee():
    assert msg.sender == self.owner  # dev: only owner
    assert block.timestamp >= self.admin_actions_deadline  # dev: insufficient time
    assert self.admin_actions_deadline != 0  # dev: no active action

    self.admin_actions_deadline = 0
    fee: uint256 = self.future_fee
    admin_fee: uint256 = self.future_admin_fee
    self.fee = fee
    self.admin_fee = admin_fee

    log NewFee(fee, admin_fee)


@external
def revert_new_parameters():
    assert msg.sender == self.owner  # dev: only owner

    self.admin_actions_deadline = 0


@external
def commit_transfer_ownership(_owner: address):
    assert msg.sender == self.owner  # dev: only owner
    assert self.transfer_ownership_deadline == 0  # dev: active transfer

    deadline: uint256 = block.timestamp + ADMIN_ACTIONS_DELAY
    self.transfer_ownership_deadline = deadline
    self.future_owner = _owner

    log CommitNewAdmin(deadline, _owner)


@external
def apply_transfer_ownership():
    assert msg.sender == self.owner  # dev: only owner
    assert block.timestamp >= self.transfer_ownership_deadline  # dev: insufficient time
    assert self.transfer_ownership_deadline != 0  # dev: no active transfer

    self.transfer_ownership_deadline = 0
    owner: address = self.future_owner
    self.owner = owner

    log NewAdmin(owner)


@external
def revert_transfer_ownership():
    assert msg.sender == self.owner  # dev: only owner

    self.transfer_ownership_deadline = 0


@view
@external
def admin_balances(i: uint256) -> uint256:
    return ERC20(self.coins[i]).balanceOf(self) - self.balances[i]


@external
def withdraw_admin_fees():
    fee_converter: address = self.fee_converter
    for i in range(N_COINS):
        c: address = self.coins[i]
        value: uint256 = ERC20(c).balanceOf(self) - self.balances[i]
        # "safeTransfer" which works for ERC20s which return bool or not
        _response: Bytes[32] = raw_call(
            c,
            concat(
                method_id("transfer(address,uint256)"),
                convert(fee_converter, bytes32),
                convert(value, bytes32),
            ),
            max_outsize=32,
        )  # dev: failed transfer
        if len(_response) > 0:
            assert convert(_response, bool)  # dev: failed transfer
    FeeConverter(fee_converter).convertFees()


@external
def kill_me():
    assert msg.sender == self.owner  # dev: only owner
    assert self.kill_deadline > block.timestamp  # dev: deadline has passed
    self.is_killed = True


@external
def unkill_me():
    assert msg.sender == self.owner  # dev: only owner
    self.is_killed = False

Contract ABI

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:"nonpayable","type":"function","name":"exchange_underlying","inputs":[{"name":"i","type":"int128"},{"name":"j","type":"int128"},{"name":"_dx","type":"uint256"},{"name":"_min_dy","type":"uint256"}],"outputs":[{"name":"","type":"uint256"}],"gas":2691001},{"stateMutability":"nonpayable","type":"function","name":"remove_liquidity","inputs":[{"name":"_amount","type":"uint256"},{"name":"_min_amounts","type":"uint256[2]"}],"outputs":[{"name":"","type":"uint256[2]"}],"gas":160333},{"stateMutability":"nonpayable","type":"function","name":"remove_liquidity_imbalance","inputs":[{"name":"_amounts","type":"uint256[2]"},{"name":"_max_burn_amount","type":"uint256"}],"outputs":[{"name":"","type":"uint256"}],"gas":6253244},{"stateMutability":"view","type":"function","name":"calc_withdraw_one_coin","inputs":[{"name":"_token_amount","type":"uint256"},{"name":"i","type":"int128"}],"outputs":[{"name":"","type":"uint256"}],"gas":3974},{"stateMutability":"nonpayable","type":"function","name":"remove_liquidity_one_coin","inputs":[{"name":"_token_amount","type":"uint256"},{"name":"i","type":"int128"},{"name":"_min_amount","type":"uint256"}],"outputs":[{"name":"","type":"uint256"}],"gas":3944030},{"stateMutability":"nonpayable","type":"function","name":"ramp_A","inputs":[{"name":"_future_A","type":"uint256"},{"name":"_future_time","type":"uint256"}],"outputs":[],"gas":151599},{"stateMutability":"nonpayable","type":"function","name":"stop_ramp_A","inputs":[],"outputs":[],"gas":148360},{"stateMutability":"nonpayable","type":"function","name":"commit_new_fee","inputs":[{"name":"_new_fee","type":"uint256"},{"name":"_new_admin_fee","type":"uint256"}],"outputs":[],"gas":110218},{"stateMutability":"nonpayable","type":"function","name":"apply_new_fee","inputs":[],"outputs":[],"gas":96999},{"stateMutability":"nonpayable","type":"function","name":"revert_new_parameters","inputs":[],"outputs":[],"gas":21652},{"stateMutability":"nonpayable","type":"function","name":"commit_transfer_ownership","inputs":[{"name":"_owner","type":"address"}],"outputs":[],"gas":74390},{"stateMutability":"nonpayable","type":"function","name":"apply_transfer_ownership","inputs":[],"outputs":[],"gas":60467},{"stateMutability":"nonpayable","type":"function","name":"revert_transfer_ownership","inputs":[],"outputs":[],"gas":21742},{"stateMutability":"view","type":"function","name":"admin_balances","inputs":[{"name":"i","type":"uint256"}],"outputs":[{"name":"","type":"uint256"}],"gas":3238},{"stateMutability":"nonpayable","type":"function","name":"withdraw_admin_fees","inputs":[],"outputs":[],"gas":16237},{"stateMutability":"nonpayable","type":"function","name":"kill_me","inputs":[],"outputs":[],"gas":37725},{"stateMutability":"nonpayable","type":"function","name":"unkill_me","inputs":[],"outputs":[],"gas":21862},{"stateMutability":"view","type":"function","name":"coins","inputs":[{"name":"arg0","type":"uint256"}],"outputs":[{"name":"","type":"address"}],"gas":1947},{"stateMutability":"view","type":"function","name":"balances","inputs":[{"name":"arg0","type":"uint256"}],"outputs":[{"name":"","type":"uint256"}],"gas":1977},{"stateMutability":"view","type":"function","name":"fee","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":1898},{"stateMutability":"view","type":"function","name":"admin_fee","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":1928},{"stateMutability":"view","type":"function","name":"owner","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":1958},{"stateMutability":"view","type":"function","name":"fee_converter","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":1988},{"stateMutability":"view","type":"function","name":"lp_token","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2018},{"stateMutability":"view","type":"function","name":"base_pool","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2048},{"stateMutability":"view","type":"function","name":"base_virtual_price","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2078},{"stateMutability":"view","type":"function","name":"base_cache_updated","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2108},{"stateMutability":"view","type":"function","name":"base_coins","inputs":[{"name":"arg0","type":"uint256"}],"outputs":[{"name":"","type":"address"}],"gas":2247},{"stateMutability":"view","type":"function","name":"initial_A","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2168},{"stateMutability":"view","type":"function","name":"future_A","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2198},{"stateMutability":"view","type":"function","name":"initial_A_time","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2228},{"stateMutability":"view","type":"function","name":"future_A_time","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2258},{"stateMutability":"view","type":"function","name":"admin_actions_deadline","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2288},{"stateMutability":"view","ty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