Overview
Max Total Supply
2,155,374,554.569009407382946301 CRV
Holders
87,279 ( 0.013%)
Market
Price
$0.25 @ 0.000097 ETH (+0.96%)
Onchain Market Cap
$543,018,554.22
Circulating Supply Market Cap
$293,040,092.69
Other Info
Token Contract (WITH 18 Decimals)
Balance
94.2496 CRVValue
$23.74 ( ~0.00910569036045329 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | ![]() | CRV-USDT | $0.2515 0.0000965 Eth | $14,092,178.00 56,641,879.300 CRV | 19.2032% |
2 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $8,184,226.00 32,876,961.399 CRV | 11.1462% |
3 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $5,430,409.00 21,829,103.450 CRV | 7.4007% |
4 | ![]() | CRV-USDT | $0.2508 0.0000963 Eth | $5,255,252.00 21,163,060.445 CRV | 7.1749% |
5 | ![]() | CRV-USDT | $0.2512 0.0000964 Eth | $5,112,214.00 20,546,809.400 CRV | 6.9660% |
6 | ![]() | CRV-USDT | $0.251 0.0000963 Eth | $4,766,925.00 18,995,238.811 CRV | 6.4399% |
7 | ![]() | CRV-USDT | $0.2509 0.0000963 Eth | $2,776,638.00 11,068,247.820 CRV | 3.7525% |
8 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $2,640,767.00 10,623,587.140 CRV | 3.6017% |
9 | ![]() | CRV-USD | $0.2513 0.0000965 Eth | $2,506,484.00 9,974,072.510 CRV | 3.3815% |
10 | ![]() | CRV-USDT | $0.2509 0.0000963 Eth | $2,245,791.00 9,026,385.700 CRV | 3.0602% |
11 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $2,074,037.00 0.000 CRV | 0.0000% |
12 | ![]() | CRV-USDT | $0.251 0.0000964 Eth | $1,362,568.00 5,427,942.100 CRV | 1.8402% |
13 | ![]() | CRV-USDT | $0.251 0.0000964 Eth | $1,349,305.00 5,427,942.100 CRV | 1.8402% |
14 | ![]() | CRV-USDT | $0.2509 0.0000963 Eth | $1,307,088.00 5,251,865.500 CRV | 1.7805% |
15 | ![]() | CRV-USDT | $0.2513 0.0000965 Eth | $1,148,704.00 4,571,886.550 CRV | 1.5500% |
16 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $1,130,373.00 4,543,145.600 CRV | 1.5403% |
17 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $976,457.00 3,889,255.600 CRV | 1.3186% |
18 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $942,655.00 3,788,941.800 CRV | 1.2846% |
19 | ![]() | CRV-USDC | $0.251 0.0000963 Eth | $796,333.00 3,201,372.500 CRV | 1.0854% |
20 | ![]() | CRV-USDT | $0.2513 0.0000965 Eth | $795,444.00 3,164,412.700 CRV | 1.0728% |
21 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $696,138.00 2,798,982.525 CRV | 0.9489% |
22 | ![]() | CRV-USDT | $0.2504 0.0000961 Eth | $658,171.00 2,628,844.629 CRV | 0.8913% |
23 | ![]() | CRV-USDT | $0.2508 0.0000963 Eth | $583,931.00 2,328,595.100 CRV | 0.7895% |
24 | ![]() | CRV-USDT | $0.2512 0.0000964 Eth | $545,892.00 2,199,601.000 CRV | 0.7457% |
25 | ![]() | CRV-USDT | $0.2522 0.0000969 Eth | $524,156.00 2,078,081.900 CRV | 0.7045% |
26 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $520,449.00 2,072,852.500 CRV | 0.7028% |
27 | ![]() | CRV-XRP | $0.2513 0.0000965 Eth | $505,172.00 2,010,103.640 CRV | 0.6815% |
28 | ![]() | CRV-USDT | $0.2515 0.0000966 Eth | $459,728.00 1,828,097.789 CRV | 0.6198% |
29 | ![]() | CRV-USDT | $0.2513 0.0000964 Eth | $435,967.00 1,735,084.890 CRV | 0.5882% |
30 | ![]() | CRV-USDC | $0.2511 0.0000964 Eth | $417,044.00 1,660,784.820 CRV | 0.5631% |
31 | ![]() | CRV-USDT | $0.2506 0.0000962 Eth | $370,236.00 1,477,601.800 CRV | 0.5009% |
32 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2513 0.0000965 Eth | $341,965.00 1,385,583.003 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.4698% |
33 | ![]() | 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $0.2515 0.0000965 Eth | $319,548.00 1,292,403.700 0X11CDB42B0EB46D95F990BEDD4695A6E3FA034978 | 0.4382% |
34 | ![]() | CRV-TRY | $0.2523 0.0000969 Eth | $278,183.00 1,102,508.300 CRV | 0.3738% |
35 | ![]() | CRV-USDT | $0.2522 0.0000968 Eth | $270,984.00 1,089,640.400 CRV | 0.3694% |
36 | ![]() | CRV-TRY | $0.2532 0.0000972 Eth | $266,143.00 1,058,503.700 CRV | 0.3589% |
37 | ![]() | CRV-USDT | $0.2512 0.0000964 Eth | $235,489.00 946,701.761 CRV | 0.3210% |
38 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $231,834.00 932,138.213 CRV | 0.3160% |
39 | ![]() | 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6-0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | $0.2506 0.0000964 Eth | $192,014.00 191,113.697 0XC52D7F23A2E460248DB6EE192CB23DD12BDDCBF6 | 0.0648% |
40 | ![]() | CRV-BTC | $0.2514 0.0000965 Eth | $189,718.00 763,743.100 CRV | 0.2589% |
41 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $187,164.00 744,573.540 CRV | 0.2524% |
42 | ![]() | CRV-SGD | $0.2506 0.0000962 Eth | $182,731.00 729,104.166 CRV | 0.2472% |
43 | ![]() | CRV-USD | $0.2503 0.0000961 Eth | $182,675.00 729,826.096 CRV | 0.2474% |
44 | ![]() | CRV-USDC | $0.2504 0.0000961 Eth | $153,956.00 618,794.520 CRV | 0.2098% |
45 | ![]() | CRV-USDT | $0.2509 0.0000963 Eth | $141,193.00 562,823.360 CRV | 0.1908% |
46 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $132,338.00 532,061.200 CRV | 0.1804% |
47 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $131,797.00 530,055.100 CRV | 0.1797% |
48 | ![]() | CRV-USD | $0.251 0.0000964 Eth | $118,609.00 472,544.510 CRV | 0.1602% |
49 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $115,836.00 480,053.428 CRV | 0.1628% |
50 | ![]() | CRV-USD | $0.2522 0.0000970 Eth | $115,474.00 457,956.000 CRV | 0.1553% |
51 | ![]() | CRV-USD | $0.252 0.0000967 Eth | $113,261.00 449,448.169 CRV | 0.1524% |
52 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $112,112.00 446,521.100 CRV | 0.1514% |
53 | ![]() | CRV-USDC | $0.2509 0.0000963 Eth | $94,761.00 379,846.500 CRV | 0.1288% |
54 | ![]() | CRV-TRY | $0.2532 0.0000974 Eth | $88,300.00 348,717.940 CRV | 0.1182% |
55 | ![]() | CRV-THB | $0.2527 0.0000970 Eth | $87,331.00 345,568.291 CRV | 0.1172% |
56 | ![]() | CRV-USDT | $0.2509 0.0000963 Eth | $87,285.00 350,434.981 CRV | 0.1188% |
57 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.2517 0.0000968 Eth | $76,156.00 306,330.810 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.1039% |
58 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.2521 0.0000968 Eth | $58,607.00 235,270.329 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0798% |
59 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.251 0.0000963 Eth | $57,006.00 229,843.298 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0779% |
60 | ![]() | CRV-USDT | $0.2521 0.0000970 Eth | $46,935.00 188,742.400 CRV | 0.0640% |
61 | ![]() | CRV-USDT | $0.2513 0.0000965 Eth | $46,855.00 186,466.573 CRV | 0.0632% |
62 | ![]() | CRV-BTC | $0.2508 0.0000963 Eth | $46,784.00 188,516.765 CRV | 0.0639% |
63 | ![]() | CRV-USDT | $0.2521 0.0000968 Eth | $42,872.00 170,084.268 CRV | 0.0577% |
64 | ![]() | 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53-0X4200000000000000000000000000000000000006 | $0.2508 0.0000963 Eth | $40,236.00 163,261.713 0X0994206DFE8DE6EC6920FF4D779B0D950605FB53 | 0.0554% |
65 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $39,397.00 161,833.800 CRV | 0.0549% |
66 | ![]() | CRV-EUR | $0.2516 0.0000966 Eth | $28,546.00 113,470.740 CRV | 0.0385% |
67 | ![]() | CRV-USDT | $0.2514 0.0000965 Eth | $27,904.00 113,011.687 CRV | 0.0383% |
68 | ![]() | CRV-EUR | $0.2502 0.0000960 Eth | $26,276.00 105,037.489 CRV | 0.0356% |
69 | ![]() | CRV-USDC | $0.2504 0.0000961 Eth | $22,235.00 89,371.867 CRV | 0.0303% |
70 | ![]() | CRV-USDT | $0.2521 0.0000968 Eth | $19,549.59 78,526.022 CRV | 0.0266% |
71 | ![]() | CRV-BTC | $0.2514 0.0000966 Eth | $18,131.72 80,164.800 CRV | 0.0272% |
72 | ![]() | CRV-USD | $0.253 0.0000971 Eth | $17,824.08 70,450.916 CRV | 0.0239% |
73 | ![]() | CRV-GBP | $0.2494 0.0000957 Eth | $16,105.60 64,572.260 CRV | 0.0219% |
74 | ![]() | CRV-BTC | $0.2508 0.0000963 Eth | $15,923.35 63,484.000 CRV | 0.0215% |
75 | ![]() | CRV-USD | $0.2515 0.0000965 Eth | $14,810.41 58,900.000 CRV | 0.0200% |
76 | ![]() | CRV-EUR | $0.2518 0.0000967 Eth | $14,741.68 58,550.000 CRV | 0.0199% |
77 | ![]() | CRV-USDC | $0.2515 0.0000966 Eth | $13,997.62 55,650.000 CRV | 0.0189% |
78 | ![]() | CRV-TRY | $0.2529 0.0000971 Eth | $13,675.31 54,847.832 CRV | 0.0186% |
79 | ![]() | CRV-USDT | $0.2523 0.0000971 Eth | $13,572.43 53,797.545 CRV | 0.0182% |
80 | ![]() | CRV-USDT | $0.2516 0.0000966 Eth | $10,945.17 44,011.633 CRV | 0.0149% |
81 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2511 0.0000964 Eth | $9,289.86 37,272.132 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0126% |
82 | ![]() | CRV-USDT | $0.2521 0.0000968 Eth | $9,080.17 36,021.549 CRV | 0.0122% |
83 | ![]() | CRV-ETH | $0.2514 0.0000965 Eth | $8,184.60 32,555.219 CRV | 0.0110% |
84 | ![]() | CRV-USDT | $0.251 0.0000963 Eth | $5,205.85 21,011.400 CRV | 0.0071% |
85 | ![]() | CRV-USD | $0.2511 0.0000964 Eth | $5,192.03 20,675.503 CRV | 0.0070% |
86 | ![]() | CRV-USDT | $0.2518 0.0000967 Eth | $4,111.99 16,502.706 CRV | 0.0056% |
87 | ![]() | CRV-USDT | $0.2513 0.0000965 Eth | $3,375.01 13,428.305 CRV | 0.0046% |
88 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.251 0.0000964 Eth | $3,237.30 13,138.597 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0045% |
89 | ![]() | CRV-EUR | $0.2527 0.0000970 Eth | $3,023.85 12,058.144 CRV | 0.0041% |
90 | ![]() | CRV-USD | $0.251 0.0000964 Eth | $2,971.30 11,837.370 CRV | 0.0040% |
91 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $0.2528 0.0000972 Eth | $2,888.72 11,651.918 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0040% |
92 | ![]() | CRV-USDT | $0.2519 0.0000969 Eth | $2,341.40 9,296.054 CRV | 0.0032% |
93 | ![]() | CRV-USDT | $0.251 0.0000963 Eth | $2,292.41 9,134.351 CRV | 0.0031% |
94 | ![]() | CRV-ETH | $0.252 0.0000967 Eth | $1,085.74 4,380.150 CRV | 0.0015% |
95 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $0.251 0.0000967 Eth | $406.29 1,641.976 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0006% |
96 | ![]() | CRV-USD | $0.252 0.0000967 Eth | $399.74 1,630.445 CRV | 0.0006% |
97 | ![]() | 0XD533A949740BB3306D119CC777FA900BA034CD52-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.2509 0.0000966 Eth | $278.53 1,124.994 0XD533A949740BB3306D119CC777FA900BA034CD52 | 0.0004% |
98 | ![]() | CRV-BRL | $0.2513 0.0000965 Eth | $181.30 721.484 CRV | 0.0002% |
99 | ![]() | 0X172370D5CD63279EFA6D502DAB29171933A610AF-0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | $0.2513 0.0000965 Eth | $74.04 301.829 0X172370D5CD63279EFA6D502DAB29171933A610AF | 0.0001% |
100 | ![]() | CRV-USDT | $0.2511 0.0000964 Eth | $29.91 122.660 CRV | 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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