ETH Price: $3,896.47 (+0.95%)

Token

Curve DAO Token (CRV)
 

Overview

Max Total Supply

2,200,219,254.586926028519752444 CRV

Holders

88,531 ( 0.025%)

Market

Price

$1.13 @ 0.000289 ETH (+7.15%)

Onchain Market Cap

$2,475,745,245.78

Circulating Supply Market Cap

$1,402,260,866.31

Other Info

Token Contract (WITH 18 Decimals)

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

Value
$1,172.10 ( ~0.300810920020464 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):$1,127,592,775.07
Market Capitalization:$1,402,260,866.31
Circulating Supply:1,246,203,083.00 CRV
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Binance
CRV-USDT$1.11
0.0002859 Eth
$193,161,111.00
175,035,702.300 CRV
22.1041%
2
Gate.io
CRV-USDT$1.11
0.0002858 Eth
$102,883,205.00
93,159,377.089 CRV
11.7645%
3
OKX
CRV-USDT$1.11
0.0002858 Eth
$64,508,001.00
58,487,235.129 CRV
7.3860%
4
MEXC
CRV-USDT$1.11
0.0002858 Eth
$54,447,664.00
48,884,271.352 CRV
6.1733%
5
Bitget
CRV-USDT$1.11
0.0002857 Eth
$49,590,559.00
44,507,094.824 CRV
5.6205%
6
Coinbase Exchange
CRV-USD$1.12
0.0002862 Eth
$37,216,451.00
33,363,022.270 CRV
4.2132%
7
Bybit
CRV-USDT$1.12
0.0002867 Eth
$36,394,948.00
32,922,298.190 CRV
4.1575%
8
HTX
CRV-USDT$1.11
0.0002855 Eth
$35,259,518.00
32,067,208.832 CRV
4.0495%
9
Bitunix
CRV-USDT$1.12
0.0002875 Eth
$31,488,560.00
28,083,240.600 CRV
3.5464%
10
Slex
CRV-USDT$1.11
0.0002845 Eth
$20,319,139.00
18,517,910.500 CRV
2.3385%
11
BTSE
CRV-USDT$1.12
0.0002883 Eth
$17,235,536.00
15,331,226.565 CRV
1.9361%
12
BIT
CRV-USDT$1.11
0.0002855 Eth
$16,622,136.00
14,942,263.857 CRV
1.8870%
13
XT.COM
CRV-USDT$1.11
0.0002860 Eth
$15,638,181.00
14,172,177.900 CRV
1.7897%
14
LBank
CRV-USDT$1.12
0.0002862 Eth
$13,306,014.00
11,929,845.440 CRV
1.5065%
15
DigiFinex
CRV-USDT$1.11
0.0002857 Eth
$10,833,074.00
9,728,103.200 CRV
1.2285%
16
Kraken
CRV-USD$1.12
0.0002882 Eth
$10,154,352.00
9,042,165.204 CRV
1.1419%
17
Niza Global
CRV-USD$1.12
0.0002875 Eth
$9,914,794.00
9,037,686.944 CRV
1.1413%
18
Hotcoin
CRV-USDT$1.12
0.0002884 Eth
$8,307,917.00
7,385,603.400 CRV
0.9327%
19
Currency.com
CRV-USD$1.10
0.0002822 Eth
$8,228,146.00
7,459,788.000 CRV
0.9420%
20
KuCoin
CRV-USDT$1.11
0.0002857 Eth
$8,025,353.00
7,209,217.702 CRV
0.9104%
21
FameEX
CRV-USDT$1.13
0.0002890 Eth
$7,715,204.00
6,994,575.442 CRV
0.8833%
22
BYDFi
CRV-USDT$1.11
0.0002860 Eth
$7,660,448.00
6,872,232.500 CRV
0.8678%
23
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.13
0.0002890 Eth
$6,435,739.00
5,778,047.463 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.7297%
24
Biconomy.com
CRV-USDT$1.12
0.0002856 Eth
$6,268,440.00
5,712,091.044 CRV
0.7213%
25
Binance
CRV-USDC$1.11
0.0002847 Eth
$5,547,044.00
5,024,713.000 CRV
0.6345%
26
Coinstore
CRV-USDT$1.12
0.0002869 Eth
$5,063,419.00
4,586,129.300 CRV
0.5792%
27
FMFW.io
CRV-USDT$1.11
0.0002838 Eth
$4,982,053.00
4,491,371.200 CRV
0.5672%
28
Dex-Trade
CRV-USDT$1.11
0.0002858 Eth
$4,558,453.00
4,092,312.023 CRV
0.5168%
29
Binance
CRV-BTC$1.12
0.0002862 Eth
$4,436,287.00
4,159,271.200 CRV
0.5252%
30
Bitvavo
CRV-EUR$1.12
0.0002883 Eth
$4,203,409.00
3,741,540.585 CRV
0.4725%
31
Curve (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7$1.12
0.0002875 Eth
$3,932,654.00
3,438,261.770 0XD533A949740BB3306D119CC777FA900BA034CD52
0.4342%
32
Trubit
CRV-USDT$1.12
0.0002862 Eth
$3,902,942.00
3,562,983.600 CRV
0.4499%
33
Bullish
CRV-USDC$1.12
0.0002863 Eth
$3,881,345.00
3,529,855.789 CRV
0.4458%
34
Hibt
CRV-USDT$1.12
0.0002883 Eth
$3,866,785.00
3,508,738.789 CRV
0.4431%
35
Binance
CRV-TRY$1.12
0.0002864 Eth
$3,851,525.00
3,469,876.000 CRV
0.4382%
36
Toobit
CRV-USDT$1.12
0.0002885 Eth
$3,837,050.00
3,479,720.900 CRV
0.4394%
37
BingX
CRV-USDT$1.11
0.0002859 Eth
$3,825,990.00
3,462,387.139 CRV
0.4372%
38
Phemex
CRV-USDT$1.13
0.0002890 Eth
$3,602,492.00
3,197,065.090 CRV
0.4037%
39
Ourbit
CRV-USDT$1.11
0.0002859 Eth
$3,164,496.00
2,866,998.560 CRV
0.3621%
40
PointPay
CRV-USDT$1.12
0.0002873 Eth
$3,137,346.00
2,840,866.737 CRV
0.3588%
41
FMCPAY
CRV-USDT$1.12
0.0002876 Eth
$2,844,551.00
2,582,698.190 CRV
0.3262%
42
Bithumb
CRV-KRW$1.10
0.0002829 Eth
$2,660,625.00
2,413,644.536 CRV
0.3048%
43
Luno
CRV-MYR$1.12
0.0002886 Eth
$2,620,957.00
2,330,026.000 CRV
0.2942%
44
Bitkub
CRV-THB$1.12
0.0002873 Eth
$2,532,292.00
2,261,828.933 CRV
0.2856%
45
CoinEx
CRV-USDT$1.12
0.0002884 Eth
$2,366,286.00
2,142,853.715 CRV
0.2706%
46
Coinbase Exchange
CRV-EUR$1.12
0.0002881 Eth
$2,030,729.00
1,808,445.010 CRV
0.2284%
47
BitMart
CRV-USDT$1.13
0.0002887 Eth
$1,969,102.00
1,750,005.880 CRV
0.2210%
48
WhiteBIT
CRV-BTC$1.12
0.0002862 Eth
$1,887,177.00
1,692,220.700 CRV
0.2137%
49
Icrypex
CRV-USDT$1.11
0.0002837 Eth
$1,884,291.00
1,699,563.239 CRV
0.2146%
50
OKX
CRV-USDC$1.11
0.0002856 Eth
$1,577,717.00
1,429,325.495 CRV
0.1805%
51
WEEX
CRV-USDT$1.13
0.0002889 Eth
$1,500,146.00
1,332,496.047 CRV
0.1683%
52
Kraken
CRV-EUR$1.12
0.0002884 Eth
$1,257,273.00
1,118,492.365 CRV
0.1412%
53
Upbit
CRV-BTC$1.11
0.0002850 Eth
$1,165,453.00
1,049,279.663 CRV
0.1325%
54
P2B
CRV-USD$1.11
0.0002858 Eth
$1,077,053.00
966,834.010 CRV
0.1221%
55
Uniswap V3 (Ethereum)
0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52$1.13
0.0002892 Eth
$1,050,646.00
153,874.966 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B
0.0194%
56
WhiteBIT
CRV-TRY$1.13
0.0002887 Eth
$927,616.00
823,783.000 CRV
0.1040%
57
Pionex
CRV-USDT$1.12
0.0002876 Eth
$900,865.00
814,053.536 CRV
0.1028%
58
BitDelta
CRV-USDT$1.12
0.0002864 Eth
$884,576.00
803,585.700 CRV
0.1015%
59
LATOKEN
CRV-BTC$1.12
0.0002862 Eth
$848,685.00
760,805.929 CRV
0.0961%
60
Bitso
CRV-USD$1.12
0.0002883 Eth
$833,966.00
742,312.366 CRV
0.0937%
61
Nonkyc.io
CRV-USDT$1.12
0.0002883 Eth
$821,320.00
745,764.041 CRV
0.0942%
62
CoinCatch
CRV-USDT$1.11
0.0002858 Eth
$728,231.00
663,198.800 CRV
0.0838%
63
Gemini
CRV-USD$1.12
0.0002864 Eth
$603,478.00
540,750.949 CRV
0.0683%
64
Quickswap (v3)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.13
0.0002891 Eth
$544,766.00
493,687.076 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0623%
65
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.11
0.0002849 Eth
$534,015.00
485,121.926 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0613%
66
BigONE
CRV-USDT$1.11
0.0002857 Eth
$499,971.00
448,972.039 CRV
0.0567%
67
WEEX
CRV-USDC$1.10
0.0002822 Eth
$414,657.00
378,004.000 CRV
0.0477%
68
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.12
0.0002877 Eth
$401,391.00
363,577.985 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0459%
69
Bitazza
CRV-USDT$1.11
0.0002837 Eth
$396,089.00
359,635.100 CRV
0.0454%
70
Curve (Arbitrum)
0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978$1.12
0.0002870 Eth
$392,001.00
340,877.248 0X912CE59144191C1204E64559FE8253A0E49E6548
0.0430%
71
Coinbase Exchange
CRV-GBP$1.12
0.0002882 Eth
$379,588.00
338,018.930 CRV
0.0427%
72
Curve (Optimism)
0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53$1.10
0.0002827 Eth
$324,317.00
126,326.474 0X4200000000000000000000000000000000000042
0.0160%
73
KickEX
CRV-USDT$1.12
0.0002860 Eth
$247,154.00
221,323.662 CRV
0.0279%
74
Bitget
CRV-BTC$1.11
0.0002858 Eth
$237,779.00
218,140.492 CRV
0.0275%
75
Coinbase Exchange
CRV-BTC$1.12
0.0002880 Eth
$182,890.00
162,978.250 CRV
0.0206%
76
LATOKEN
CRV-USDT$1.12
0.0002887 Eth
$180,203.00
160,184.645 CRV
0.0202%
77
DeGate
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.12
0.0002873 Eth
$170,206.00
153,558.045 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0194%
78
Bitstamp
CRV-USD$1.12
0.0002874 Eth
$165,340.00
147,617.505 CRV
0.0186%
79
TokoCrypto
CRV-USDT$1.12
0.0002861 Eth
$121,891.00
109,299.916 CRV
0.0138%
80
Dex-Trade
CRV-BTC$1.10
0.0002824 Eth
$111,538.00
101,050.330 CRV
0.0128%
81
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984$1.11
0.0002860 Eth
$108,735.00
94,531.002 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0119%
82
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.11
0.0002849 Eth
$105,975.00
96,899.464 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0122%
83
Korbit
CRV-KRW$1.11
0.0002838 Eth
$99,193.00
88,501.334 CRV
0.0112%
84
Globe
CRV-USDT$1.11
0.0002837 Eth
$90,797.00
82,667.135 CRV
0.0104%
85
Sushiswap (Polygon POS)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.12
0.0002883 Eth
$61,292.00
54,840.481 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0069%
86
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.13
0.0002893 Eth
$36,946.00
33,263.924 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0042%
87
Nonkyc.io
CRV-BTC$1.11
0.0002837 Eth
$33,135.00
31,180.677 CRV
0.0039%
88
Gate.io
CRV-ETH$1.12
0.0002862 Eth
$27,798.00
24,882.500 CRV
0.0031%
89
ApeSwap (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.12
0.0002875 Eth
$16,373.96
14,790.478 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0019%
90
DeFi Swap
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.10
0.0002824 Eth
$9,320.09
8,502.231 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0011%
91
Luno
CRV-XBT$1.11
0.0002855 Eth
$9,307.12
8,364.400 CRV
0.0011%
92
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831$1.11
0.0002837 Eth
$6,291.14
5,724.638 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0007%
93
Sushiswap (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.12
0.0002868 Eth
$5,887.35
5,246.678 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0007%
94
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$1.13
0.0002885 Eth
$5,616.32
5,065.513 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0006%
95
Balancer V2 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32$1.086
0.0002784 Eth
$5,595.62
5,557.870 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0007%
96
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.12
0.0002869 Eth
$1,345.64
1,191.905 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0002%
97
Gravity Finance
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.12
0.0002869 Eth
$903.43
808.365 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0001%
98
Energiswap
0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4$1.097
0.0002813 Eth
$421.45
373.995 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E
0.0000%
99
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.11
0.0002848 Eth
$246.49
222.908 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0000%
100
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.12
0.0002861 Eth
$200.32
178.795 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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