ETH Price: $3,836.87 (+0.88%)

Token

Curve DAO Token (CRV)
 

Overview

Max Total Supply

2,200,186,921.969923316018718684 CRV

Holders

88,532 (0.00%)

Market

Price

$1.06 @ 0.000275 ETH (-2.69%)

Onchain Market Cap

$2,325,526,245.55

Circulating Supply Market Cap

$1,317,206,122.05

Other Info

Token Contract (WITH 18 Decimals)

Balance
5.50345923991932336 CRV

Value
$5.82 ( ~0.00151686330029539 Eth) [0.0000%]
0x77a01c716980169a051504f4e92ba25556befd0a
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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):$1,232,000,437.82
Market Capitalization:$1,317,206,122.05
Circulating Supply:1,246,212,417.00 CRV
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Binance
CRV-USDT$1.076
0.0002807 Eth
$231,595,833.00
212,739,946.200 CRV
22.6670%
2
Websea
CRV-USDT$1.069
0.0002799 Eth
$121,965,228.00
0.000 CRV
0.0000%
3
Gate.io
CRV-USDT$1.073
0.0002809 Eth
$109,635,855.00
100,574,164.416 CRV
10.7160%
4
WhiteBIT
CRV-USDT$1.075
0.0002806 Eth
$96,058,283.00
89,321,876.640 CRV
9.5171%
5
OKX
CRV-USDT$1.072
0.0002798 Eth
$73,509,121.00
67,448,310.513 CRV
7.1865%
6
MEXC
CRV-USDT$1.058
0.0002775 Eth
$56,444,173.00
53,329,424.258 CRV
5.6821%
7
Bitget
CRV-USDT$1.076
0.0002808 Eth
$47,853,466.00
43,086,895.595 CRV
4.5908%
8
Coinbase Exchange
CRV-USD$1.073
0.0002812 Eth
$40,040,593.00
37,313,012.210 CRV
3.9756%
9
Bybit
CRV-USDT$1.077
0.0002810 Eth
$40,008,487.00
36,492,042.410 CRV
3.8882%
10
HTX
CRV-USDT$1.077
0.0002820 Eth
$35,499,777.00
32,493,974.246 CRV
3.4622%
11
Bitunix
CRV-USDT$1.072
0.0002804 Eth
$35,426,281.00
33,055,321.700 CRV
3.5220%
12
Slex
CRV-USDT$1.071
0.0002803 Eth
$20,265,395.00
18,580,767.400 CRV
1.9797%
13
XT.COM
CRV-USDT$1.075
0.0002804 Eth
$18,721,280.00
17,193,746.200 CRV
1.8320%
14
BTSE
CRV-USDT$1.058
0.0002774 Eth
$17,431,288.00
16,474,987.850 CRV
1.7554%
15
LBank
CRV-USDT$1.071
0.0002805 Eth
$14,391,583.00
13,435,671.400 CRV
1.4315%
16
DigiFinex
CRV-USDT$1.078
0.0002811 Eth
$12,631,853.00
11,723,041.800 CRV
1.2491%
17
Niza Global
CRV-USD$1.078
0.0002823 Eth
$11,149,875.00
10,265,690.985 CRV
1.0938%
18
Kraken
CRV-USD$1.071
0.0002795 Eth
$11,000,575.00
10,271,312.046 CRV
1.0944%
19
Hotcoin
CRV-USDT$1.073
0.0002801 Eth
$10,094,198.00
9,405,175.800 CRV
1.0021%
20
BYDFi
CRV-USDT$1.076
0.0002816 Eth
$8,963,418.00
8,333,833.100 CRV
0.8880%
21
KuCoin
CRV-USDT$1.076
0.0002807 Eth
$8,937,742.00
8,306,304.881 CRV
0.8850%
22
Currency.com
CRV-USD$1.056
0.0002785 Eth
$7,310,250.00
6,925,536.000 CRV
0.7379%
23
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.064
0.0002791 Eth
$6,281,791.00
5,787,833.013 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.6167%
24
Binance
CRV-BTC$1.073
0.0002800 Eth
$6,130,370.00
5,873,575.100 CRV
0.6258%
25
Biconomy.com
CRV-USDT$1.058
0.0002769 Eth
$5,990,265.00
5,492,842.500 CRV
0.5853%
26
Coinstore
CRV-USDT$1.079
0.0002825 Eth
$5,932,732.00
5,446,394.700 CRV
0.5803%
27
Binance
CRV-USDC$1.08
0.0002818 Eth
$5,674,997.00
5,160,155.600 CRV
0.5498%
28
Dex-Trade
CRV-USDT$1.059
0.0002776 Eth
$5,573,465.00
5,263,714.467 CRV
0.5608%
29
Trubit
CRV-USDT$1.066
0.0002798 Eth
$4,698,094.00
4,348,544.800 CRV
0.4633%
30
Bitvavo
CRV-EUR$1.055
0.0002777 Eth
$4,555,164.00
4,319,194.238 CRV
0.4602%
31
BingX
CRV-USDT$1.072
0.0002798 Eth
$4,284,664.00
3,926,927.380 CRV
0.4184%
32
Binance
CRV-TRY$1.076
0.0002807 Eth
$4,031,936.00
3,651,258.900 CRV
0.3890%
33
PointPay
CRV-USDT$1.071
0.0002805 Eth
$3,825,577.00
3,522,963.037 CRV
0.3754%
34
Ourbit
CRV-USDT$1.074
0.0002811 Eth
$3,693,394.00
3,396,524.760 CRV
0.3619%
35
Phemex
CRV-USDT$1.074
0.0002815 Eth
$3,568,986.00
3,324,560.900 CRV
0.3542%
36
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.067
0.0002800 Eth
$3,371,197.00
3,136,481.905 0XD533A949740BB3306D119CC777FA900BA034CD52
0.3342%
37
Luno
CRV-MYR$1.068
0.0002800 Eth
$3,150,050.00
2,950,335.880 CRV
0.3144%
38
Bithumb
CRV-KRW$1.074
0.0002803 Eth
$3,046,920.00
2,835,810.568 CRV
0.3021%
39
FMCPAY
CRV-USDT$1.064
0.0002792 Eth
$2,927,459.00
2,681,233.730 CRV
0.2857%
40
Bitkub
CRV-THB$1.071
0.0002808 Eth
$2,875,121.00
2,685,362.581 CRV
0.2861%
41
CoinEx
CRV-USDT$1.068
0.0002797 Eth
$2,637,202.00
2,413,505.391 CRV
0.2572%
42
Coinbase Exchange
CRV-EUR$1.073
0.0002814 Eth
$2,365,348.00
2,204,337.920 CRV
0.2349%
43
BitMart
CRV-USDT$1.067
0.0002795 Eth
$2,279,568.00
2,135,546.100 CRV
0.2275%
44
Icrypex
CRV-USDT$1.058
0.0002800 Eth
$1,906,681.00
1,802,284.118 CRV
0.1920%
45
WhiteBIT
CRV-BTC$1.071
0.0002806 Eth
$1,813,986.00
1,693,142.900 CRV
0.1804%
46
OKX
CRV-USDC$1.074
0.0002803 Eth
$1,605,604.00
1,462,407.320 CRV
0.1558%
47
WEEX
CRV-USDT$1.056
0.0002785 Eth
$1,503,053.00
1,423,956.429 CRV
0.1517%
48
Kraken
CRV-EUR$1.076
0.0002808 Eth
$1,453,530.00
1,350,843.781 CRV
0.1439%
49
Upbit
CRV-BTC$1.066
0.0002782 Eth
$1,322,597.00
1,240,503.569 CRV
0.1322%
50
LATOKEN
CRV-BTC$1.061
0.0002783 Eth
$1,186,156.00
1,117,602.421 CRV
0.1191%
51
Uniswap V3 (Ethereum)
0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52$1.045
0.0002741 Eth
$1,116,680.00
174,412.138 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B
0.0186%
52
P2B
CRV-USD$1.052
0.0002770 Eth
$1,073,582.00
1,020,515.580 CRV
0.1087%
53
WhiteBIT
CRV-TRY$1.069
0.0002804 Eth
$952,290.00
891,152.000 CRV
0.0950%
54
BitDelta
CRV-USDT$1.066
0.0002796 Eth
$910,797.00
833,633.100 CRV
0.0888%
55
Nonkyc.io
CRV-USDT$1.054
0.0002785 Eth
$894,733.00
819,874.287 CRV
0.0874%
56
Bitso
CRV-USD$1.059
0.0002778 Eth
$857,096.00
809,352.519 CRV
0.0862%
57
Gemini
CRV-USD$1.074
0.0002802 Eth
$792,842.00
738,145.656 CRV
0.0786%
58
BigONE
CRV-USDT$1.073
0.0002800 Eth
$635,199.00
591,867.926 CRV
0.0631%
59
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.076
0.0002821 Eth
$555,432.00
515,655.287 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0549%
60
Quickswap (v3)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.07
0.0002806 Eth
$453,196.00
421,324.534 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0449%
61
Curve (Arbitrum)
0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978$1.049
0.0002750 Eth
$447,911.00
413,271.411 0X912CE59144191C1204E64559FE8253A0E49E6548
0.0440%
62
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.062
0.0002787 Eth
$432,205.00
396,974.628 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0423%
63
WEEX
CRV-USDC$1.057
0.0002785 Eth
$409,542.00
375,003.000 CRV
0.0400%
64
Bitazza
CRV-USDT$1.07
0.0002800 Eth
$407,565.00
371,970.600 CRV
0.0396%
65
Coinbase Exchange
CRV-GBP$1.069
0.0002801 Eth
$347,382.00
325,014.910 CRV
0.0346%
66
Tokenize
CRV-USD$1.06
0.0002780 Eth
$336,482.00
317,315.881 CRV
0.0338%
67
Curve (Optimism)
0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53$1.061
0.0002782 Eth
$311,867.00
126,242.049 0X4200000000000000000000000000000000000042
0.0135%
68
KickEX
CRV-USDT$1.064
0.0002793 Eth
$234,886.00
220,699.054 CRV
0.0235%
69
Coinbase Exchange
CRV-BTC$1.075
0.0002818 Eth
$232,459.00
216,198.440 CRV
0.0230%
70
Bitget
CRV-BTC$1.073
0.0002800 Eth
$228,912.00
211,508.050 CRV
0.0225%
71
LATOKEN
CRV-USDT$1.071
0.0002804 Eth
$210,025.00
196,045.634 CRV
0.0209%
72
Uniswap V2 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.10
0.0002884 Eth
$202,896.00
180,289.208 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0192%
73
DeGate
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.071
0.0002808 Eth
$186,239.00
169,795.961 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0181%
74
Dex-Trade
CRV-BTC$1.069
0.0002803 Eth
$157,277.00
147,070.330 CRV
0.0157%
75
Sushiswap
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.10
0.0002885 Eth
$116,841.00
104,212.395 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0111%
76
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984$1.061
0.0002781 Eth
$103,565.00
93,987.120 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0100%
77
Globe
CRV-USDT$1.078
0.0002823 Eth
$96,722.00
88,558.203 CRV
0.0094%
78
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.069
0.0002789 Eth
$85,320.00
78,521.487 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0084%
79
Sushiswap (Polygon POS)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.073
0.0002813 Eth
$71,449.00
65,877.330 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0070%
80
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.061
0.0002779 Eth
$38,809.00
36,001.728 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0038%
81
Nonkyc.io
CRV-BTC$1.06
0.0002791 Eth
$34,293.00
32,937.888 CRV
0.0035%
82
Gate.io
CRV-ETH$1.071
0.0002804 Eth
$33,107.00
30,583.610 CRV
0.0033%
83
Foxbit
CRV-BRL$1.073
0.0002816 Eth
$25,590.00
23,900.031 CRV
0.0025%
84
ApeSwap (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.057
0.0002772 Eth
$16,969.15
15,930.768 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0017%
85
HashKey Global
CRV-USDT$1.077
0.0002821 Eth
$16,333.52
14,922.200 CRV
0.0016%
86
Luno
CRV-XBT$1.056
0.0002769 Eth
$13,051.60
12,359.200 CRV
0.0013%
87
DeFi Swap
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.10
0.0002878 Eth
$10,878.24
9,836.102 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0010%
88
Uniswap V2 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984$1.10
0.0002891 Eth
$8,552.72
7,691.640 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0008%
89
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XAF88D065E77C8CC2239327C5EDB3A432268E5831$1.068
0.0002794 Eth
$6,816.61
6,238.497 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0007%
90
Balancer V2 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32$1.036
0.0002716 Eth
$6,033.25
6,322.801 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0007%
91
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$1.067
0.0002800 Eth
$5,653.98
5,154.713 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0005%
92
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7$1.064
0.0002787 Eth
$3,300.64
2,979.057 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0003%
93
Curve (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E$1.10
0.0002880 Eth
$2,304.97
2,117.904 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0002%
94
Gravity Finance
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.058
0.0002771 Eth
$997.88
925.339 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0001%
95
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.052
0.0002762 Eth
$942.49
851.778 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0001%
96
Curve (Arbitrum)
0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978$1.063
0.0002787 Eth
$833.31
862.983 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5
0.0001%
97
Energiswap
0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4$1.057
0.0002774 Eth
$460.32
406.964 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E
0.0000%
98
Swapr (Arbitrum)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.065
0.0002789 Eth
$288.77
266.695 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0000%
99
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.069
0.0002800 Eth
$268.73
249.004 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0000%
100
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.068
0.0002788 Eth
$214.10
196.631 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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