ETH Price: $3,997.72 (-0.07%)

Token

Curve DAO Token (CRV)
 

Overview

Max Total Supply

2,201,517,551.460831031370179584 CRV

Holders

88,618 ( -0.111%)

Market

Price

$1.22 @ 0.000306 ETH (+4.16%)

Onchain Market Cap

$2,695,699,299.32

Circulating Supply Market Cap

$1,530,048,601.63

Other Info

Token Contract (WITH 18 Decimals)

Balance
0 CRV

Value
$0.00
0x02ff53e5a088d2dfe05440e5fb75f1a2312d2078
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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):$608,182,367.99
Market Capitalization:$1,530,048,601.63
Circulating Supply:1,249,556,600.00 CRV
Market Data Source: Coinmarketcap

# Exchange Pair Price  24H Volume % Volume
1
Websea
CRV-USDT$1.22
0.0003044 Eth
$59,198,194.00
0.000 CRV
0.0000%
2
Gate.io
CRV-USDT$1.22
0.0003050 Eth
$34,340,357.00
28,854,484.850 CRV
10.7748%
3
OKX
CRV-USDT$1.22
0.0003031 Eth
$32,405,052.00
27,169,374.654 CRV
10.1456%
4
Slex
CRV-USDT$1.21
0.0003022 Eth
$22,937,323.00
19,303,289.400 CRV
7.2082%
5
Bitget
CRV-USDT$1.22
0.0003041 Eth
$21,231,942.00
17,659,584.723 CRV
6.5944%
6
Bybit
CRV-USDT$1.22
0.0003049 Eth
$17,076,168.00
14,344,253.510 CRV
5.3564%
7
Bitunix
CRV-USDT$1.22
0.0003040 Eth
$16,547,138.00
13,575,798.900 CRV
5.0695%
8
MEXC
CRV-USDT$1.22
0.0003052 Eth
$16,512,376.00
13,501,067.222 CRV
5.0416%
9
Coinbase Exchange
CRV-USD$1.22
0.0003051 Eth
$14,783,947.00
12,093,207.810 CRV
4.5158%
10
BTSE
CRV-USDT$1.22
0.0003047 Eth
$12,828,558.00
10,506,649.391 CRV
3.9234%
11
XT.COM
CRV-USDT$1.23
0.0003054 Eth
$9,295,160.00
7,794,080.100 CRV
2.9105%
12
HTX
CRV-USDT$1.22
0.0003039 Eth
$9,216,708.00
7,710,761.289 CRV
2.8793%
13
DigiFinex
CRV-USDT$1.21
0.0003029 Eth
$6,399,055.00
5,271,614.700 CRV
1.9685%
14
LBank
CRV-USDT$1.21
0.0003031 Eth
$5,245,042.00
4,321,652.350 CRV
1.6138%
15
CoinW
CRV-USDT$1.22
0.0003052 Eth
$4,776,488.00
3,903,697.884 CRV
1.4577%
16
BYDFi
CRV-USDT$1.22
0.0003050 Eth
$4,624,125.00
3,784,384.000 CRV
1.4132%
17
FameEX
CRV-USDT$1.21
0.0003028 Eth
$4,563,386.00
3,827,739.505 CRV
1.4294%
18
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.22
0.0003040 Eth
$4,185,702.00
3,471,629.129 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
1.2964%
19
Dex-Trade
CRV-USDT$1.22
0.0003043 Eth
$3,983,479.00
3,268,717.900 CRV
1.2206%
20
KuCoin
CRV-USDT$1.22
0.0003043 Eth
$3,931,426.00
3,222,292.504 CRV
1.2033%
21
Biconomy.com
CRV-USDT$1.22
0.0003049 Eth
$3,765,692.00
3,159,408.300 CRV
1.1798%
22
Bitvavo
CRV-EUR$1.22
0.0003052 Eth
$3,678,959.00
3,008,991.205 CRV
1.1236%
23
Kraken
CRV-USD$1.22
0.0003044 Eth
$3,573,554.00
2,929,142.986 CRV
1.0938%
24
Trubit
CRV-USDT$1.22
0.0003056 Eth
$3,453,547.00
2,899,040.800 CRV
1.0826%
25
Phemex
CRV-USDT$1.22
0.0003048 Eth
$3,310,276.00
2,710,909.330 CRV
1.0123%
26
Coinstore
CRV-USDT$1.21
0.0003019 Eth
$3,158,939.00
2,645,920.500 CRV
0.9880%
27
FMCPAY
CRV-USDT$1.21
0.0003030 Eth
$2,989,933.00
2,512,927.180 CRV
0.9384%
28
FMFW.io
CRV-USDT$1.22
0.0003031 Eth
$2,883,674.00
2,371,761.100 CRV
0.8857%
29
Bullish
CRV-USDC$1.22
0.0003039 Eth
$2,877,528.00
2,419,634.812 CRV
0.9035%
30
Bitrue
CRV-USDT$1.22
0.0003037 Eth
$2,832,412.00
2,326,950.780 CRV
0.8689%
31
HitBTC
CRV-USDT$1.22
0.0003055 Eth
$2,827,492.00
2,372,653.800 CRV
0.8860%
32
Bitkub
CRV-THB$1.23
0.0003071 Eth
$2,562,975.00
2,083,144.405 CRV
0.7779%
33
BingX
CRV-USDT$1.22
0.0003039 Eth
$2,368,965.00
1,993,576.327 CRV
0.7444%
34
Binance
CRV-TRY$1.22
0.0003042 Eth
$2,343,832.00
1,952,460.800 CRV
0.7291%
35
Toobit
CRV-USDT$1.22
0.0003049 Eth
$2,307,840.00
1,934,873.200 CRV
0.7225%
36
Binance
CRV-BTC$1.22
0.0003032 Eth
$2,216,953.00
1,855,606.300 CRV
0.6929%
37
Luno
CRV-MYR$1.22
0.0003049 Eth
$2,051,076.00
1,679,356.810 CRV
0.6271%
38
Ourbit
CRV-USDT$1.22
0.0003057 Eth
$1,899,373.00
1,592,381.650 CRV
0.5946%
39
PointPay
CRV-USDT$1.22
0.0003049 Eth
$1,837,181.00
1,539,573.449 CRV
0.5749%
40
CoinEx
CRV-USDT$1.22
0.0003055 Eth
$1,747,541.00
1,470,387.950 CRV
0.5491%
41
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.22
0.0003043 Eth
$1,726,102.00
1,441,065.390 0XD533A949740BB3306D119CC777FA900BA034CD52
0.5381%
42
Binance
CRV-USDC$1.22
0.0003050 Eth
$1,592,072.00
1,344,828.500 CRV
0.5022%
43
WEEX
CRV-USDT$1.21
0.0003037 Eth
$1,504,708.00
1,238,991.675 CRV
0.4627%
44
Bithumb
CRV-KRW$1.19
0.0002977 Eth
$1,346,502.00
1,128,287.138 CRV
0.4213%
45
Curve (Ethereum)
0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E-0XD533A949740BB3306D119CC777FA900BA034CD52$1.20
0.0003004 Eth
$1,283,826.00
1,249,683.525 0XF939E0A03FB07F59A73314E73794BE0E57AC1B4E
0.4667%
46
BitMart
CRV-USDT$1.23
0.0003060 Eth
$1,187,801.00
969,101.420 CRV
0.3619%
47
Currency.com
CRV-USD$1.23
0.0003060 Eth
$1,150,701.00
939,156.000 CRV
0.3507%
48
WhiteBIT
CRV-BTC$1.23
0.0003058 Eth
$1,132,249.00
923,771.900 CRV
0.3450%
49
P2B
CRV-USD$1.22
0.0003046 Eth
$918,188.00
752,612.920 CRV
0.2810%
50
OKX
CRV-USDC$1.22
0.0003042 Eth
$815,683.00
684,737.752 CRV
0.2557%
51
Hotcoin
CRV-USDT$1.22
0.0003044 Eth
$671,414.00
550,125.000 CRV
0.2054%
52
BitDelta
CRV-USDT$1.21
0.0003016 Eth
$669,865.00
563,045.200 CRV
0.2103%
53
Kraken
CRV-EUR$1.22
0.0003051 Eth
$555,835.00
454,631.562 CRV
0.1698%
54
Nonkyc.io
CRV-USDT$1.22
0.0003053 Eth
$552,750.00
465,085.716 CRV
0.1737%
55
Bitso
CRV-USD$1.22
0.0003054 Eth
$480,986.00
393,132.768 CRV
0.1468%
56
WhiteBIT
CRV-TRY$1.22
0.0003054 Eth
$476,583.00
389,419.200 CRV
0.1454%
57
Bitazza
CRV-USDT$1.22
0.0003050 Eth
$440,498.00
369,561.800 CRV
0.1380%
58
Curve (Arbitrum)
0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978$1.22
0.0003051 Eth
$437,404.00
368,853.447 0X912CE59144191C1204E64559FE8253A0E49E6548
0.1377%
59
LATOKEN
CRV-BTC$1.22
0.0003055 Eth
$436,497.00
356,896.015 CRV
0.1333%
60
Coinbase Exchange
CRV-EUR$1.22
0.0003047 Eth
$404,387.00
331,288.520 CRV
0.1237%
61
Curve (Arbitrum)
0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978$1.22
0.0003052 Eth
$402,700.00
394,963.937 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5
0.1475%
62
BloFin
CRV-USDT$1.22
0.0003052 Eth
$389,694.00
327,868.800 CRV
0.1224%
63
Gemini
CRV-USD$1.22
0.0003033 Eth
$362,583.00
298,226.224 CRV
0.1114%
64
AscendEX (BitMax)
CRV-USDT$1.22
0.0003037 Eth
$362,272.00
297,598.200 CRV
0.1111%
65
WEEX
CRV-USDC$1.21
0.0003023 Eth
$348,560.00
292,732.000 CRV
0.1093%
66
Upbit
CRV-BTC$1.22
0.0003054 Eth
$325,246.00
265,683.307 CRV
0.0992%
67
Uniswap V3 (Ethereum)
0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B-0XD533A949740BB3306D119CC777FA900BA034CD52$1.20
0.0003005 Eth
$315,286.00
46,043.234 0X4E3FBD56CD56C3E72C1403E103B45DB9DA5B9D2B
0.0172%
68
Pionex
CRV-USDT$1.22
0.0003049 Eth
$311,148.00
260,657.202 CRV
0.0973%
69
Curve (Optimism)
0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53$1.23
0.0003061 Eth
$256,512.00
250,331.720 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6
0.0935%
70
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.23
0.0003064 Eth
$240,075.00
198,747.729 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0742%
71
Coinbase Exchange
CRV-GBP$1.22
0.0003046 Eth
$235,637.00
193,093.410 CRV
0.0721%
72
Curve (Optimism)
0X4200000000000000000000000000000000000042-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53$1.23
0.0003058 Eth
$202,014.00
74,118.222 0X4200000000000000000000000000000000000042
0.0277%
73
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.22
0.0003043 Eth
$170,600.00
142,585.972 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0532%
74
Binance US
CRV-USDT$1.22
0.0003054 Eth
$114,875.00
93,883.063 CRV
0.0351%
75
DeGate
0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48$1.23
0.0003062 Eth
$112,689.00
94,226.168 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0352%
76
LATOKEN
CRV-USDT$1.21
0.0003023 Eth
$112,592.00
92,884.714 CRV
0.0347%
77
BigONE
CRV-USDT$1.22
0.0003050 Eth
$108,289.00
88,632.831 CRV
0.0331%
78
Uniswap V3 (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.22
0.0003054 Eth
$103,853.00
86,391.744 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0323%
79
TokoCrypto
CRV-USDT$1.22
0.0003054 Eth
$78,411.00
64,048.224 CRV
0.0239%
80
Uniswap V2 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.21
0.0003013 Eth
$48,838.00
40,653.937 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0152%
81
Sushiswap
0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2$1.21
0.0003018 Eth
$48,393.00
40,263.765 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0150%
82
Uniswap V3 (Ethereum)
0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984$1.22
0.0003055 Eth
$40,139.00
33,524.503 0XD533A949740BB3306D119CC777FA900BA034CD52
0.0125%
83
Luno
CRV-ZAR$1.23
0.0003062 Eth
$28,852.00
23,509.450 CRV
0.0088%
84
Nonkyc.io
CRV-BTC$1.22
0.0003052 Eth
$26,938.00
22,568.450 CRV
0.0084%
85
PancakeSwap V3 (Arbitrum)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.21
0.0003016 Eth
$26,581.00
22,278.944 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0083%
86
Globe
CRV-USDT$1.23
0.0003062 Eth
$23,103.00
19,411.611 CRV
0.0072%
87
Sushiswap (Polygon POS)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.23
0.0003060 Eth
$22,907.00
18,962.027 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0071%
88
Uniswap V3 (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9$1.22
0.0003043 Eth
$16,947.35
14,182.740 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0053%
89
HashKey Global
CRV-USDT$1.22
0.0003051 Eth
$15,117.76
12,700.800 CRV
0.0047%
90
Uniswap V3 (Optimism)
0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006$1.22
0.0003055 Eth
$14,275.01
11,980.006 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53
0.0045%
91
ApeSwap (Polygon)
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.22
0.0003050 Eth
$6,668.09
5,507.588 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0021%
92
Luno
CRV-XBT$1.21
0.0003027 Eth
$6,510.87
5,364.600 CRV
0.0020%
93
Sushiswap (Arbitrum One)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.22
0.0003034 Eth
$2,445.83
2,031.816 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0008%
94
Uniswap V3 (Polygon)
0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0X172370D5CD63279EFA6D502DAB29171933A610AF$1.21
0.0003033 Eth
$1,472.72
611.186 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A
0.0002%
95
Uniswap V3 (Ethereum)
0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7-0XD533A949740BB3306D119CC777FA900BA034CD52$1.20
0.0003000 Eth
$751.18
1,087.370 0X62B9C7356A2DC64A1969E19C23E4F579F9810AA7
0.0004%
96
Gravity Finance
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.22
0.0003036 Eth
$393.33
326.815 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0001%
97
Energiswap
0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4$1.19
0.0002980 Eth
$167.65
140.088 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E
0.0001%
98
Swapr (Arbitrum)
0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1$1.21
0.0003019 Eth
$146.06
121.072 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978
0.0000%
99
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270$1.22
0.0003033 Eth
$112.04
93.008 0X172370D5CD63279EFA6D502DAB29171933A610AF
0.0000%
100
Quickswap
0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619$1.21
0.0003021 Eth
$90.02
74.992 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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