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Overview
Max Total Supply
2,166,741,658.258823683887090056 CRV
Holders
87,909 ( -0.001%)
Market
Price
$0.26 @ 0.000112 ETH (-2.54%)
Onchain Market Cap
$555,959,114.53
Circulating Supply Market Cap
$306,742,404.10
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.000000000040068211 CRVValue
$0.00 ( ~0 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2577 0.0001126 Eth | $23,823,435.00 91,410,882.200 CRV | 35.7603% |
2 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $4,792,591.00 18,362,916.443 CRV | 7.1836% |
3 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $3,622,093.00 13,900,457.827 CRV | 5.4379% |
4 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $3,504,193.00 0.000 CRV | 0.0000% |
5 | ![]() | CRV-USDT | $0.2574 0.0001126 Eth | $2,879,682.00 11,185,605.900 CRV | 4.3759% |
6 | ![]() | CRV-USDT | $0.2577 0.0001126 Eth | $2,878,710.00 11,063,367.880 CRV | 4.3280% |
7 | ![]() | CRV-USDT | $0.2575 0.0001126 Eth | $1,907,793.00 7,320,641.500 CRV | 2.8639% |
8 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $1,789,337.00 6,946,780.560 CRV | 2.7176% |
9 | ![]() | CRV-USDT | $0.2578 0.0001127 Eth | $1,747,517.00 6,779,673.180 CRV | 2.6522% |
10 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $1,734,014.00 6,657,426.850 CRV | 2.6044% |
11 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $1,599,152.00 6,138,820.600 CRV | 2.4015% |
12 | ![]() | CRV-USDT | $0.2574 0.0001125 Eth | $1,498,673.00 5,822,679.600 CRV | 2.2779% |
13 | ![]() | CRV-USD | $0.2577 0.0001126 Eth | $1,484,018.00 5,758,705.320 CRV | 2.2528% |
14 | ![]() | CRV-USDT | $0.2573 0.0001125 Eth | $1,406,201.00 5,406,669.300 CRV | 2.1151% |
15 | ![]() | CRV-USDT | $0.2574 0.0001125 Eth | $1,186,184.00 4,609,044.400 CRV | 1.8031% |
16 | ![]() | CRV-USDT | $0.2574 0.0001125 Eth | $1,105,713.00 4,296,046.965 CRV | 1.6806% |
17 | ![]() | CRV-USDT | $0.2574 0.0001126 Eth | $944,699.00 3,625,607.468 CRV | 1.4184% |
18 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $865,917.00 3,363,018.153 CRV | 1.3156% |
19 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $849,661.00 3,298,978.800 CRV | 1.2906% |
20 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $703,959.00 2,701,821.900 CRV | 1.0570% |
21 | ![]() | CRV-USDT | $0.2572 0.0001124 Eth | $686,838.00 2,670,966.350 CRV | 1.0449% |
22 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $679,180.00 2,605,978.125 CRV | 1.0195% |
23 | ![]() | CRV-USDT | $0.2575 0.0001126 Eth | $555,178.00 2,129,820.300 CRV | 0.8332% |
24 | ![]() | CRV-USDT | $0.2583 0.0001129 Eth | $530,532.00 2,054,050.250 CRV | 0.8036% |
25 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2579 0.0001127 Eth | $519,285.00 1,987,328.351 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.7775% |
26 | ![]() | CRV-BTC | $0.2574 0.0001125 Eth | $425,971.00 1,631,453.200 CRV | 0.6382% |
27 | ![]() | CRV-USDT | $0.2571 0.0001124 Eth | $389,464.00 1,495,050.153 CRV | 0.5849% |
28 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $349,248.00 1,356,042.300 CRV | 0.5305% |
29 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $304,915.00 1,169,681.844 CRV | 0.4576% |
30 | ![]() | CRV-USDT | $0.2571 0.0001123 Eth | $285,143.00 1,109,134.360 CRV | 0.4339% |
31 | ![]() | CRV-USDT | $0.2568 0.0001122 Eth | $277,003.00 1,062,411.100 CRV | 0.4156% |
32 | ![]() | CRV-USDT | $0.257 0.0001123 Eth | $272,366.00 1,049,424.600 CRV | 0.4105% |
33 | ![]() | CRV-USDT | $0.2573 0.0001124 Eth | $264,439.00 1,014,819.078 CRV | 0.3970% |
34 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2565 0.0001122 Eth | $250,952.00 255,436.239 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0999% |
35 | ![]() | CRV-USD | $0.258 0.0001128 Eth | $227,566.00 882,038.016 CRV | 0.3451% |
36 | ![]() | CRV-SGD | $0.2569 0.0001123 Eth | $220,642.00 858,915.396 CRV | 0.3360% |
37 | ![]() | CRV-USD | $0.2568 0.0001122 Eth | $220,603.00 859,046.564 CRV | 0.3361% |
38 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $220,019.00 844,629.500 CRV | 0.3304% |
39 | ![]() | CRV-TRY | $0.2588 0.0001132 Eth | $209,438.00 809,306.880 CRV | 0.3166% |
40 | ![]() | CRV-USD | $0.257 0.0001123 Eth | $195,054.00 758,966.410 CRV | 0.2969% |
41 | ![]() | CRV-USDT | $0.257 0.0001123 Eth | $188,527.00 733,711.200 CRV | 0.2870% |
42 | ![]() | CRV-USDC | $0.2576 0.0001125 Eth | $168,328.00 645,457.200 CRV | 0.2525% |
43 | ![]() | CRV-USDT | $0.2576 0.0001126 Eth | $158,830.00 616,611.603 CRV | 0.2412% |
44 | ![]() | CRV-THB | $0.2576 0.0001126 Eth | $153,336.00 595,361.856 CRV | 0.2329% |
45 | ![]() | CRV-USDT | $0.2562 0.0001122 Eth | $148,177.00 578,477.065 CRV | 0.2263% |
46 | ![]() | CRV-BTC | $0.2568 0.0001122 Eth | $140,969.00 548,951.000 CRV | 0.2148% |
47 | ![]() | CRV-USDT | $0.2573 0.0001124 Eth | $140,270.00 545,191.763 CRV | 0.2133% |
48 | ![]() | CRV-EUR | $0.2576 0.0001126 Eth | $132,410.00 513,966.018 CRV | 0.2011% |
49 | ![]() | CRV-TRY | $0.2585 0.0001130 Eth | $124,410.00 474,309.400 CRV | 0.1856% |
50 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $115,071.00 441,593.600 CRV | 0.1728% |
51 | ![]() | CRV-USDT | $0.2574 0.0001125 Eth | $114,140.00 443,461.000 CRV | 0.1735% |
52 | ![]() | 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2567 0.0001122 Eth | $105,297.00 107,262.863 0X498BF2B1E120FED3AD3D42EA2165E9B73F99C1E5 | 0.0420% |
53 | ![]() | CRV-USDT | $0.2572 0.0001124 Eth | $89,609.00 344,500.010 CRV | 0.1348% |
54 | ![]() | 0X912CE59144191C1204E64559FE8253A0E49E6548-0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | $0.2567 0.0001122 Eth | $84,853.00 172,077.401 0X912CE59144191C1204E64559FE8253A0E49E6548 | 0.0673% |
55 | ![]() | CRV-USDT | $0.2573 0.0001124 Eth | $84,608.00 328,849.887 CRV | 0.1286% |
56 | ![]() | CRV-BTC | $0.2574 0.0001125 Eth | $68,363.00 262,609.536 CRV | 0.1027% |
57 | ![]() | CRV-TRY | $0.26 0.0001136 Eth | $68,301.00 262,731.400 CRV | 0.1028% |
58 | ![]() | CRV-BTC | $0.2563 0.0001120 Eth | $64,048.00 249,881.679 CRV | 0.0978% |
59 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2572 0.0001124 Eth | $54,999.00 211,308.096 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0827% |
60 | ![]() | CRV-TRY | $0.2595 0.0001134 Eth | $51,599.00 198,867.031 CRV | 0.0778% |
61 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2573 0.0001124 Eth | $48,719.00 187,016.251 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0732% |
62 | ![]() | CRV-USDT | $0.257 0.0001123 Eth | $41,808.00 161,762.600 CRV | 0.0633% |
63 | ![]() | CRV-BTC | $0.2574 0.0001125 Eth | $38,012.00 164,788.800 CRV | 0.0645% |
64 | ![]() | CRV-USDT | $0.2573 0.0001124 Eth | $37,968.00 145,721.000 CRV | 0.0570% |
65 | ![]() | CRV-USDT | $0.257 0.0001123 Eth | $36,887.00 141,539.263 CRV | 0.0554% |
66 | ![]() | CRV-USDT | $0.258 0.0001127 Eth | $35,786.00 138,716.124 CRV | 0.0543% |
67 | ![]() | CRV-BTC | $0.2569 0.0001123 Eth | $33,425.00 130,131.000 CRV | 0.0509% |
68 | ![]() | CRV-EUR | $0.2562 0.0001120 Eth | $30,544.00 119,228.551 CRV | 0.0466% |
69 | ![]() | CRV-USDT | $0.2576 0.0001125 Eth | $26,882.00 104,372.859 CRV | 0.0408% |
70 | ![]() | CRV-EUR | $0.2581 0.0001128 Eth | $26,279.00 101,831.450 CRV | 0.0398% |
71 | ![]() | CRV-THB | $0.2596 0.0001135 Eth | $19,879.36 75,480.000 CRV | 0.0295% |
72 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2576 0.0001126 Eth | $19,605.06 75,063.102 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0294% |
73 | ![]() | CRV-TRY | $0.2597 0.0001135 Eth | $17,816.19 67,540.227 CRV | 0.0264% |
74 | ![]() | CRV-USDT | $0.2575 0.0001125 Eth | $16,453.17 63,908.287 CRV | 0.0250% |
75 | ![]() | CRV-USD | $0.2566 0.0001123 Eth | $16,298.21 63,516.000 CRV | 0.0248% |
76 | ![]() | CRV-USDC | $0.2564 0.0001120 Eth | $13,386.42 51,372.392 CRV | 0.0201% |
77 | ![]() | CRV-USDT | $0.2574 0.0001125 Eth | $13,147.37 50,478.737 CRV | 0.0197% |
78 | ![]() | CRV-USD | $0.2562 0.0001120 Eth | $12,185.07 47,560.759 CRV | 0.0186% |
79 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.26 0.0001137 Eth | $6,697.86 25,333.657 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0099% |
80 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.26 0.0001136 Eth | $6,368.18 24,152.375 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0094% |
81 | ![]() | CRV-BTC | $0.2574 0.0001125 Eth | $5,584.15 21,698.000 CRV | 0.0085% |
82 | ![]() | CRV-USDT | $0.2577 0.0001126 Eth | $5,478.70 20,994.700 CRV | 0.0082% |
83 | ![]() | CRV-IDR | $0.2576 0.0001126 Eth | $4,712.45 18,294.133 CRV | 0.0072% |
84 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2575 0.0001125 Eth | $4,423.54 16,976.425 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0066% |
85 | ![]() | CRV-USDT | $0.2577 0.0001126 Eth | $4,394.89 16,918.217 CRV | 0.0066% |
86 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $0.2563 0.0001120 Eth | $2,841.44 10,846.140 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0042% |
87 | ![]() | CRV-BTC | $0.2557 0.0001118 Eth | $2,597.39 10,156.407 CRV | 0.0040% |
88 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.257 0.0001123 Eth | $2,118.27 8,119.019 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0032% |
89 | ![]() | CRV-ETH | $0.2576 0.0001126 Eth | $2,064.30 7,905.250 CRV | 0.0031% |
90 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2566 0.0001122 Eth | $1,590.50 6,091.767 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0024% |
91 | ![]() | CRV-BTC | $0.2585 0.0001130 Eth | $1,324.98 5,105.143 CRV | 0.0020% |
92 | ![]() | CRV-EUR | $0.2596 0.0001135 Eth | $1,136.61 4,378.329 CRV | 0.0017% |
93 | ![]() | CRV-ETH | $0.2577 0.0001126 Eth | $546.89 2,122.137 CRV | 0.0008% |
94 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2567 0.0001123 Eth | $302.73 1,165.648 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0005% |
95 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2577 0.0001127 Eth | $259.70 995.027 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0004% |
96 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2564 0.0001122 Eth | $153.95 590.400 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.0002% |
97 | ![]() | CRV-USDT | $0.258 0.0001127 Eth | $29.86 113.232 CRV | 0.0000% |
98 | ![]() | CRV-USD | $0.258 0.0001128 Eth | $28.47 107.290 CRV | 0.0000% |
99 | ![]() | 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E-0XA55F26319462355474A9F2C8790860776A329AA4 | $0.2578 0.0001128 Eth | $21.27 81.572 0XD3319EAF3C4743AC75AACE77BEFCFA445ED6E69E | 0.0000% |
100 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $0.259 0.0001132 Eth | $18.53 71.160 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0000% |
Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.4
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
- No Contract Security Audit Submitted- Submit Audit Here
[{"name":"Transfer","inputs":[{"type":"address","name":"_from","indexed":true},{"type":"address","name":"_to","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false,"type":"event"},{"name":"Approval","inputs":[{"type":"address","name":"_owner","indexed":true},{"type":"address","name":"_spender","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false,"type":"event"},{"name":"UpdateMiningParameters","inputs":[{"type":"uint256","name":"time","indexed":false},{"type":"uint256","name":"rate","indexed":false},{"type":"uint256","name":"supply","indexed":false}],"anonymous":false,"type":"event"},{"name":"SetMinter","inputs":[{"type":"address","name":"minter","indexed":false}],"anonymous":false,"type":"event"},{"name":"SetAdmin","inputs":[{"type":"address","name":"admin","indexed":false}],"anonymous":false,"type":"event"},{"outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"},{"type":"uint256","name":"_decimals"}],"stateMutability":"nonpayable","type":"constructor"},{"name":"update_mining_parameters","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":148748},{"name":"start_epoch_time_write","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":149603},{"name":"future_epoch_time_write","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":149806},{"name":"available_supply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":4018},{"name":"mintable_in_timeframe","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"start"},{"type":"uint256","name":"end"}],"stateMutability":"view","type":"function","gas":2216141},{"name":"set_minter","outputs":[],"inputs":[{"type":"address","name":"_minter"}],"stateMutability":"nonpayable","type":"function","gas":38698},{"name":"set_admin","outputs":[],"inputs":[{"type":"address","name":"_admin"}],"stateMutability":"nonpayable","type":"function","gas":37837},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1421},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_owner"},{"type":"address","name":"_spender"}],"stateMutability":"view","type":"function","gas":1759},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75139},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111433},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":39288},{"name":"mint","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":228030},{"name":"burn","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":74999},{"name":"set_name","outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"}],"stateMutability":"nonpayable","type":"function","gas":178270},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":8063},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7116},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1721},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1905},{"name":"minter","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1781},{"name":"admin","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1811},{"name":"mining_epoch","outputs":[{"type":"int128","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1841},{"name":"start_epoch_time","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1871},{"name":"rate","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1901}]
Contract Creation Code
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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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