ETH Price: $3,999.26 (+3.30%)

Token

Curve DAO Token (CRV)
 

Overview

Max Total Supply

2,200,443,592.724738575928600476 CRV

Holders

88,578 (0.00%)

Market

Price

$1.29 @ 0.000322 ETH (+17.35%)

Onchain Market Cap

$2,832,761,621.36

Circulating Supply Market Cap

$1,604,785,688.09

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
Premia: Multisig
Balance
1,041.66 CRV

Value
$1,340.99 ( ~0.335309242103551 Eth) [0.0000%]
0xc22fae86443aeed038a4ed887bba8f5035fd12f0
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OVERVIEW

Curve is an exchange liquidity pool on Ethereum. Curve is designed for extremely efficient stablecoin trading and low risk, supplemental fee income for liquidity providers, without an opportunity cost.

Market

Volume (24H):$1,353,567,917.32
Market Capitalization:$1,604,785,688.09
Circulating Supply:1,246,571,670.00 CRV
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
WhiteBIT
CRV-USDT$1.26
0.0003152 Eth
$111,798,034.00
88,499,264.902 CRV
12.8561%
2
Gate.io
CRV-USDT$1.25
0.0003122 Eth
$85,257,942.00
72,507,715.148 CRV
10.5330%
3
OKX
CRV-USDT$1.25
0.0003117 Eth
$72,065,605.00
60,645,431.630 CRV
8.8098%
4
Bitget
CRV-USDT$1.25
0.0003122 Eth
$54,226,827.00
45,290,996.424 CRV
6.5793%
5
Coinbase Exchange
CRV-USD$1.26
0.0003138 Eth
$47,780,106.00
37,993,086.550 CRV
5.5192%
6
MEXC
CRV-USDT$1.28
0.0003191 Eth
$47,389,255.00
36,958,720.747 CRV
5.3689%
7
Bitunix
CRV-USDT$1.25
0.0003125 Eth
$40,833,051.00
32,629,954.300 CRV
4.7401%
8
Bybit
CRV-USDT$1.25
0.0003123 Eth
$36,576,169.00
30,847,980.600 CRV
4.4812%
9
HTX
CRV-USDT$1.25
0.0003129 Eth
$33,896,970.00
28,984,509.612 CRV
4.2105%
10
XT.COM
CRV-USDT$1.27
0.0003164 Eth
$21,968,308.00
18,370,276.100 CRV
2.6686%
11
Slex
CRV-USDT$1.25
0.0003124 Eth
$21,443,440.00
18,350,089.100 CRV
2.6657%
12
BTSE
CRV-USDT$1.29
0.0003220 Eth
$19,219,823.00
14,846,917.346 CRV
2.1568%
13
DigiFinex
CRV-USDT$1.25
0.0003120 Eth
$14,936,926.00
11,962,009.900 CRV
1.7377%
14
BYDFi
CRV-USDT$1.26
0.0003147 Eth
$11,378,160.00
9,012,465.200 CRV
1.3092%
15
KuCoin
CRV-USDT$1.25
0.0003116 Eth
$11,188,288.00
8,964,414.284 CRV
1.3022%
16
FameEX
CRV-USDT$1.26
0.0003149 Eth
$11,060,380.00
9,241,997.084 CRV
1.3426%
17
Biconomy.com
CRV-USDT$1.29
0.0003205 Eth
$10,841,449.00
9,325,315.275 CRV
1.3547%
18
Kraken
CRV-USD$1.25
0.0003120 Eth
$10,720,151.00
8,582,987.523 CRV
1.2468%
19
Niza Global
CRV-USD$1.26
0.0003142 Eth
$10,185,972.00
8,601,927.407 CRV
1.2496%
20
Dex-Trade
CRV-USDT$1.25
0.0003117 Eth
$9,115,709.00
7,302,625.549 CRV
1.0608%
21
Currency.com
CRV-USD$1.28
0.0003191 Eth
$8,746,184.00
6,826,290.000 CRV
0.9916%
22
LBank
CRV-USDT$1.26
0.0003139 Eth
$8,633,609.00
6,863,629.310 CRV
0.9971%
23
Binance
CRV-TRY$1.25
0.0003133 Eth
$8,082,140.00
6,613,013.100 CRV
0.9607%
24
CoinW
CRV-USDT$1.28
0.0003182 Eth
$8,064,964.00
6,315,762.482 CRV
0.9175%
25
Binance
CRV-USDC$1.28
0.0003178 Eth
$7,049,390.00
5,868,980.500 CRV
0.8526%
26
Coinstore
CRV-USDT$1.27
0.0003156 Eth
$6,675,942.00
5,596,229.100 CRV
0.8130%
27
Binance
CRV-BTC$1.25
0.0003127 Eth
$6,123,188.00
5,051,374.100 CRV
0.7338%
28
Luno
CRV-MYR$1.28
0.0003179 Eth
$6,056,192.00
4,741,004.380 CRV
0.6887%
29
Bitkub
CRV-THB$1.28
0.0003180 Eth
$6,010,008.00
4,706,568.008 CRV
0.6837%
30
Toobit
CRV-USDT$1.29
0.0003200 Eth
$5,461,844.00
4,568,275.800 CRV
0.6636%
31
HitBTC
CRV-USDT$1.25
0.0003121 Eth
$5,324,177.00
4,512,686.600 CRV
0.6555%
32
Bitvavo
CRV-EUR$1.28
0.0003194 Eth
$4,822,857.00
3,761,737.217 CRV
0.5465%
33
BingX
CRV-USDT$1.25
0.0003125 Eth
$4,652,613.00
3,889,292.436 CRV
0.5650%
34
PointPay
CRV-USDT$1.25
0.0003131 Eth
$4,560,350.00
3,804,928.187 CRV
0.5527%
35
Bithumb
CRV-KRW$1.23
0.0003062 Eth
$4,347,360.00
3,544,665.549 CRV
0.5149%
36
Hibt
CRV-USDT$1.26
0.0003146 Eth
$4,323,553.00
3,640,068.040 CRV
0.5288%
37
Bullish
CRV-USDC$1.30
0.0003237 Eth
$4,246,323.00
3,637,832.202 CRV
0.5285%
38
Ourbit
CRV-USDT$1.26
0.0003139 Eth
$4,201,932.00
3,522,556.000 CRV
0.5117%
39
CoinEx
CRV-USDT$1.26
0.0003147 Eth
$4,179,883.00
3,494,017.289 CRV
0.5076%
40
Curve (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7$1.31
0.0003258 Eth
$4,096,604.00
3,119,708.736 0XD533A949740BB3306D119CC777FA900BA034CD52
0.4532%
41
WhiteBIT
CRV-BTC$1.26
0.0003146 Eth
$3,706,104.00
2,940,438.300 CRV
0.4272%
42
Phemex
CRV-USDT$1.25
0.0003132 Eth
$3,652,862.00
2,911,973.140 CRV
0.4230%
43
FMCPAY
CRV-USDT$1.27
0.0003163 Eth
$3,196,859.00
2,721,702.460 CRV
0.3954%
44
Icrypex
CRV-USDT$1.25
0.0003132 Eth
$2,848,729.00
2,271,001.531 CRV
0.3299%
45
Kraken
CRV-EUR$1.26
0.0003147 Eth
$2,478,755.00
1,967,958.931 CRV
0.2859%
46
Niza Global
CRV-EUR$1.28
0.0003200 Eth
$2,376,396.00
1,984,572.086 CRV
0.2883%
47
Trubit
CRV-USDT$1.28
0.0003171 Eth
$2,296,064.00
1,945,496.100 CRV
0.2826%
48
P2B
CRV-USD$1.26
0.0003131 Eth
$2,015,288.00
1,605,807.220 CRV
0.2333%
49
Coinbase Exchange
CRV-EUR$1.25
0.0003113 Eth
$1,934,752.00
1,551,823.680 CRV
0.2254%
50
WEEX
CRV-USDT$1.30
0.0003238 Eth
$1,504,125.00
1,156,215.643 CRV
0.1680%
51
Upbit
CRV-BTC$1.27
0.0003172 Eth
$1,497,657.00
1,179,479.862 CRV
0.1713%
52
WhiteBIT
CRV-TRY$1.29
0.0003215 Eth
$1,383,357.00
1,071,039.700 CRV
0.1556%
53
OKX
CRV-USDC$1.25
0.0003112 Eth
$1,357,939.00
1,139,691.362 CRV
0.1656%
54
LATOKEN
CRV-BTC$1.25
0.0003122 Eth
$1,285,052.00
1,028,288.059 CRV
0.1494%
55
Uniswap V3 (Ethereum)
0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52$1.26
0.0003154 Eth
$1,186,887.00
158,474.159 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B
0.0230%
56
Pionex
CRV-USDT$1.26
0.0003145 Eth
$967,385.00
803,708.203 CRV
0.1168%
57
BitDelta
CRV-USDT$1.25
0.0003126 Eth
$953,867.00
823,403.700 CRV
0.1196%
58
Gemini
CRV-USD$1.25
0.0003121 Eth
$950,716.00
760,572.534 CRV
0.1105%
59
Quickswap (v3)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.26
0.0003139 Eth
$835,319.00
688,248.586 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.1000%
60
Bitso
CRV-USD$1.26
0.0003150 Eth
$713,242.00
564,921.393 CRV
0.0821%
61
Nonkyc.io
CRV-USDT$1.26
0.0003157 Eth
$712,229.00
607,006.698 CRV
0.0882%
62
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.27
0.0003162 Eth
$640,639.00
525,952.407 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0764%
63
Curve (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XD1B5651E55D4CEED36251C61C50C889B36F6ABB5$1.29
0.0003212 Eth
$631,253.00
519,525.521 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0755%
64
Curve (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XFCC5C47BE19D06BF83EB04298B026F81069FF65B$1.29
0.0003211 Eth
$572,102.00
468,606.956 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0681%
65
Curve (Optimism)
0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53$1.28
0.0003185 Eth
$487,877.00
448,520.714 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6
0.0652%
66
WEEX
CRV-USDC$1.29
0.0003202 Eth
$436,984.00
375,261.000 CRV
0.0545%
67
Bitazza
CRV-USDT$1.26
0.0003137 Eth
$429,108.00
364,209.800 CRV
0.0529%
68
Curve (Optimism)
0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53$1.29
0.0003202 Eth
$398,551.00
138,821.003 0X4200000000000000000000000000000000000042
0.0202%
69
Coinbase Exchange
CRV-BTC$1.26
0.0003156 Eth
$385,570.00
304,860.400 CRV
0.0443%
70
Coinbase Exchange
CRV-GBP$1.26
0.0003137 Eth
$385,134.00
306,288.640 CRV
0.0445%
71
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.27
0.0003161 Eth
$334,070.00
283,168.334 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0411%
72
Bitget
CRV-BTC$1.25
0.0003132 Eth
$286,589.00
233,277.586 CRV
0.0339%
73
KickEX
CRV-USDT$1.25
0.0003123 Eth
$281,936.00
225,422.946 CRV
0.0327%
74
BigONE
CRV-USDT$1.26
0.0003147 Eth
$273,999.00
217,018.149 CRV
0.0315%
75
LATOKEN
CRV-USDT$1.25
0.0003120 Eth
$255,143.00
204,294.647 CRV
0.0297%
76
Dex-Trade
CRV-BTC$1.25
0.0003122 Eth
$204,837.00
163,830.581 CRV
0.0238%
77
DeGate
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.28
0.0003187 Eth
$198,971.00
168,805.872 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0245%
78
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984$1.29
0.0003207 Eth
$158,067.00
126,895.203 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0184%
79
Curve (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7$1.26
0.0003135 Eth
$141,772.00
112,006.813 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0163%
80
CoinDCX
CRV-INR$1.30
0.0003228 Eth
$111,948.00
0.000 CRV
0.0000%
81
Sushiswap (Polygon POS)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.27
0.0003178 Eth
$78,174.00
64,102.082 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0093%
82
Bitlo
CRV-TRY$1.27
0.0003170 Eth
$64,011.00
51,570.910 CRV
0.0075%
83
Luno
CRV-ZAR$1.27
0.0003161 Eth
$49,198.00
38,862.500 CRV
0.0056%
84
Nonkyc.io
CRV-BTC$1.25
0.0003132 Eth
$32,321.00
27,118.736 CRV
0.0039%
85
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.26
0.0003144 Eth
$30,616.00
25,588.623 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0037%
86
ApeSwap (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.26
0.0003156 Eth
$21,602.00
17,581.545 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0026%
87
HashKey Global
CRV-USDT$1.24
0.0003108 Eth
$15,432.86
13,246.100 CRV
0.0019%
88
Coinone
CRV-KRW$1.23
0.0003066 Eth
$14,846.58
12,091.479 CRV
0.0018%
89
Uniswap V2 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984$1.26
0.0003134 Eth
$14,477.27
11,704.559 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0017%
90
Gate.io
CRV-ETH$1.25
0.0003132 Eth
$14,250.45
11,866.040 CRV
0.0017%
91
DeFi Swap
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.29
0.0003209 Eth
$13,320.04
10,832.241 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0016%
92
Luno
CRV-XBT$1.28
0.0003178 Eth
$11,214.54
8,788.300 CRV
0.0013%
93
Gate.io
CRV-TRY$1.26
0.0003152 Eth
$10,585.49
8,503.888 CRV
0.0012%
94
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$1.27
0.0003169 Eth
$8,899.49
7,341.531 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0011%
95
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.27
0.0003159 Eth
$4,658.89
3,867.063 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0006%
96
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.26
0.0003154 Eth
$4,012.23
3,269.739 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0005%
97
Gravity Finance
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.29
0.0003208 Eth
$1,182.86
976.925 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0001%
98
Energiswap
0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4$1.27
0.0003174 Eth
$456.29
387.880 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E
0.0001%
99
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.30
0.0003222 Eth
$359.18
294.483 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0000%
100
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.28
0.0003191 Eth
$273.05
225.004 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0000%

Contract Source Code Verified (Exact Match)

Contract Name:
Vyper_contract

Compiler Version
vyper:0.2.4

Optimization Enabled:
N/A

Other Settings:
default evmVersion, MIT license

Contract Source Code (Vyper language format)

# @version 0.2.4
"""
@title Curve DAO Token
@author Curve Finance
@license MIT
@notice ERC20 with piecewise-linear mining supply.
@dev Based on the ERC-20 token standard as defined at
     https://eips.ethereum.org/EIPS/eip-20
"""

from vyper.interfaces import ERC20

implements: ERC20


event Transfer:
    _from: indexed(address)
    _to: indexed(address)
    _value: uint256

event Approval:
    _owner: indexed(address)
    _spender: indexed(address)
    _value: uint256

event UpdateMiningParameters:
    time: uint256
    rate: uint256
    supply: uint256

event SetMinter:
    minter: address

event SetAdmin:
    admin: address


name: public(String[64])
symbol: public(String[32])
decimals: public(uint256)

balanceOf: public(HashMap[address, uint256])
allowances: HashMap[address, HashMap[address, uint256]]
total_supply: uint256

minter: public(address)
admin: public(address)

# General constants
YEAR: constant(uint256) = 86400 * 365

# Allocation:
# =========
# * shareholders - 30%
# * emplyees - 3%
# * DAO-controlled reserve - 5%
# * Early users - 5%
# == 43% ==
# left for inflation: 57%

# Supply parameters
INITIAL_SUPPLY: constant(uint256) = 1_303_030_303
INITIAL_RATE: constant(uint256) = 274_815_283 * 10 ** 18 / YEAR  # leading to 43% premine
RATE_REDUCTION_TIME: constant(uint256) = YEAR
RATE_REDUCTION_COEFFICIENT: constant(uint256) = 1189207115002721024  # 2 ** (1/4) * 1e18
RATE_DENOMINATOR: constant(uint256) = 10 ** 18
INFLATION_DELAY: constant(uint256) = 86400

# Supply variables
mining_epoch: public(int128)
start_epoch_time: public(uint256)
rate: public(uint256)

start_epoch_supply: uint256


@external
def __init__(_name: String[64], _symbol: String[32], _decimals: uint256):
    """
    @notice Contract constructor
    @param _name Token full name
    @param _symbol Token symbol
    @param _decimals Number of decimals for token
    """
    init_supply: uint256 = INITIAL_SUPPLY * 10 ** _decimals
    self.name = _name
    self.symbol = _symbol
    self.decimals = _decimals
    self.balanceOf[msg.sender] = init_supply
    self.total_supply = init_supply
    self.admin = msg.sender
    log Transfer(ZERO_ADDRESS, msg.sender, init_supply)

    self.start_epoch_time = block.timestamp + INFLATION_DELAY - RATE_REDUCTION_TIME
    self.mining_epoch = -1
    self.rate = 0
    self.start_epoch_supply = init_supply


@internal
def _update_mining_parameters():
    """
    @dev Update mining rate and supply at the start of the epoch
         Any modifying mining call must also call this
    """
    _rate: uint256 = self.rate
    _start_epoch_supply: uint256 = self.start_epoch_supply

    self.start_epoch_time += RATE_REDUCTION_TIME
    self.mining_epoch += 1

    if _rate == 0:
        _rate = INITIAL_RATE
    else:
        _start_epoch_supply += _rate * RATE_REDUCTION_TIME
        self.start_epoch_supply = _start_epoch_supply
        _rate = _rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT

    self.rate = _rate

    log UpdateMiningParameters(block.timestamp, _rate, _start_epoch_supply)


@external
def update_mining_parameters():
    """
    @notice Update mining rate and supply at the start of the epoch
    @dev Callable by any address, but only once per epoch
         Total supply becomes slightly larger if this function is called late
    """
    assert block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME  # dev: too soon!
    self._update_mining_parameters()


@external
def start_epoch_time_write() -> uint256:
    """
    @notice Get timestamp of the current mining epoch start
            while simultaneously updating mining parameters
    @return Timestamp of the epoch
    """
    _start_epoch_time: uint256 = self.start_epoch_time
    if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME:
        self._update_mining_parameters()
        return self.start_epoch_time
    else:
        return _start_epoch_time


@external
def future_epoch_time_write() -> uint256:
    """
    @notice Get timestamp of the next mining epoch start
            while simultaneously updating mining parameters
    @return Timestamp of the next epoch
    """
    _start_epoch_time: uint256 = self.start_epoch_time
    if block.timestamp >= _start_epoch_time + RATE_REDUCTION_TIME:
        self._update_mining_parameters()
        return self.start_epoch_time + RATE_REDUCTION_TIME
    else:
        return _start_epoch_time + RATE_REDUCTION_TIME


@internal
@view
def _available_supply() -> uint256:
    return self.start_epoch_supply + (block.timestamp - self.start_epoch_time) * self.rate


@external
@view
def available_supply() -> uint256:
    """
    @notice Current number of tokens in existence (claimed or unclaimed)
    """
    return self._available_supply()


@external
@view
def mintable_in_timeframe(start: uint256, end: uint256) -> uint256:
    """
    @notice How much supply is mintable from start timestamp till end timestamp
    @param start Start of the time interval (timestamp)
    @param end End of the time interval (timestamp)
    @return Tokens mintable from `start` till `end`
    """
    assert start <= end  # dev: start > end
    to_mint: uint256 = 0
    current_epoch_time: uint256 = self.start_epoch_time
    current_rate: uint256 = self.rate

    # Special case if end is in future (not yet minted) epoch
    if end > current_epoch_time + RATE_REDUCTION_TIME:
        current_epoch_time += RATE_REDUCTION_TIME
        current_rate = current_rate * RATE_DENOMINATOR / RATE_REDUCTION_COEFFICIENT

    assert end <= current_epoch_time + RATE_REDUCTION_TIME  # dev: too far in future

    for i in range(999):  # Curve will not work in 1000 years. Darn!
        if end >= current_epoch_time:
            current_end: uint256 = end
            if current_end > current_epoch_time + RATE_REDUCTION_TIME:
                current_end = current_epoch_time + RATE_REDUCTION_TIME

            current_start: uint256 = start
            if current_start >= current_epoch_time + RATE_REDUCTION_TIME:
                break  # We should never get here but what if...
            elif current_start < current_epoch_time:
                current_start = current_epoch_time

            to_mint += current_rate * (current_end - current_start)

            if start >= current_epoch_time:
                break

        current_epoch_time -= RATE_REDUCTION_TIME
        current_rate = current_rate * RATE_REDUCTION_COEFFICIENT / RATE_DENOMINATOR  # double-division with rounding made rate a bit less => good
        assert current_rate <= INITIAL_RATE  # This should never happen

    return to_mint


@external
def set_minter(_minter: address):
    """
    @notice Set the minter address
    @dev Only callable once, when minter has not yet been set
    @param _minter Address of the minter
    """
    assert msg.sender == self.admin  # dev: admin only
    assert self.minter == ZERO_ADDRESS  # dev: can set the minter only once, at creation
    self.minter = _minter
    log SetMinter(_minter)


@external
def set_admin(_admin: address):
    """
    @notice Set the new admin.
    @dev After all is set up, admin only can change the token name
    @param _admin New admin address
    """
    assert msg.sender == self.admin  # dev: admin only
    self.admin = _admin
    log SetAdmin(_admin)


@external
@view
def totalSupply() -> uint256:
    """
    @notice Total number of tokens in existence.
    """
    return self.total_supply


@external
@view
def allowance(_owner : address, _spender : address) -> uint256:
    """
    @notice Check the amount of tokens that an owner allowed to a spender
    @param _owner The address which owns the funds
    @param _spender The address which will spend the funds
    @return uint256 specifying the amount of tokens still available for the spender
    """
    return self.allowances[_owner][_spender]


@external
def transfer(_to : address, _value : uint256) -> bool:
    """
    @notice Transfer `_value` tokens from `msg.sender` to `_to`
    @dev Vyper does not allow underflows, so the subtraction in
         this function will revert on an insufficient balance
    @param _to The address to transfer to
    @param _value The amount to be transferred
    @return bool success
    """
    assert _to != ZERO_ADDRESS  # dev: transfers to 0x0 are not allowed
    self.balanceOf[msg.sender] -= _value
    self.balanceOf[_to] += _value
    log Transfer(msg.sender, _to, _value)
    return True


@external
def transferFrom(_from : address, _to : address, _value : uint256) -> bool:
    """
     @notice Transfer `_value` tokens from `_from` to `_to`
     @param _from address The address which you want to send tokens from
     @param _to address The address which you want to transfer to
     @param _value uint256 the amount of tokens to be transferred
     @return bool success
    """
    assert _to != ZERO_ADDRESS  # dev: transfers to 0x0 are not allowed
    # NOTE: vyper does not allow underflows
    #       so the following subtraction would revert on insufficient balance
    self.balanceOf[_from] -= _value
    self.balanceOf[_to] += _value
    self.allowances[_from][msg.sender] -= _value
    log Transfer(_from, _to, _value)
    return True


@external
def approve(_spender : address, _value : uint256) -> bool:
    """
    @notice Approve `_spender` to transfer `_value` tokens on behalf of `msg.sender`
    @dev Approval may only be from zero -> nonzero or from nonzero -> zero in order
        to mitigate the potential race condition described here:
        https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    @param _spender The address which will spend the funds
    @param _value The amount of tokens to be spent
    @return bool success
    """
    assert _value == 0 or self.allowances[msg.sender][_spender] == 0
    self.allowances[msg.sender][_spender] = _value
    log Approval(msg.sender, _spender, _value)
    return True


@external
def mint(_to: address, _value: uint256) -> bool:
    """
    @notice Mint `_value` tokens and assign them to `_to`
    @dev Emits a Transfer event originating from 0x00
    @param _to The account that will receive the created tokens
    @param _value The amount that will be created
    @return bool success
    """
    assert msg.sender == self.minter  # dev: minter only
    assert _to != ZERO_ADDRESS  # dev: zero address

    if block.timestamp >= self.start_epoch_time + RATE_REDUCTION_TIME:
        self._update_mining_parameters()

    _total_supply: uint256 = self.total_supply + _value
    assert _total_supply <= self._available_supply()  # dev: exceeds allowable mint amount
    self.total_supply = _total_supply

    self.balanceOf[_to] += _value
    log Transfer(ZERO_ADDRESS, _to, _value)

    return True


@external
def burn(_value: uint256) -> bool:
    """
    @notice Burn `_value` tokens belonging to `msg.sender`
    @dev Emits a Transfer event with a destination of 0x00
    @param _value The amount that will be burned
    @return bool success
    """
    self.balanceOf[msg.sender] -= _value
    self.total_supply -= _value

    log Transfer(msg.sender, ZERO_ADDRESS, _value)
    return True


@external
def set_name(_name: String[64], _symbol: String[32]):
    """
    @notice Change the token name and symbol to `_name` and `_symbol`
    @dev Only callable by the admin account
    @param _name New token name
    @param _symbol New token symbol
    """
    assert msg.sender == self.admin, "Only admin is allowed to change name"
    self.name = _name
    self.symbol = _symbol

Contract Security Audit

Contract ABI

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000f43757276652044414f20546f6b656e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034352560000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _name (string): Curve DAO Token
Arg [1] : _symbol (string): CRV
Arg [2] : _decimals (uint256): 18

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [3] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [4] : 43757276652044414f20546f6b656e0000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 4352560000000000000000000000000000000000000000000000000000000000


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