Token Dai Stablecoin
Overview ERC20
Price
$1.00 @ 0.000281 ETH (+0.06%)
Fully Diluted Market Cap
Total Supply:
72,587,067.626322 DAI
Holders:
121,845 addresses
Contract:
Decimals:
18
Official Site:
Balance
3,410.213406717291402387 DAIValue
$3,401.97 ( ~0.958410883580298 ETH) [0.0047%]
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OVERVIEW
Multi-Collateral Dai, brings a lot of new and exciting features, such as support for new CDP collateral types and Dai Savings Rate.Market
Volume (24H) | : | $927,069,417.00 |
Market Capitalization | : | $4,829,544,965.00 |
Circulating Supply | : | 4,840,647,358.00 DAI |
Market Data Source: Coinmarketcap |
Update? Click here to update the token ICO / general information
# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Uniswap V3 (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.001 0.0000142 Btc | $12,747,332.00 12,687,471.826 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 15.3585% |
2 | Uniswap V3 (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.9991 0.0000141 Btc | $10,709,171.00 10,717,499.166 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 12.9738% |
3 | DODO (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $0.997 0.0000141 Btc | $8,182,574.00 8,204,017.392 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 9.9312% |
4 | Uniswap V2 (Ethereum) | 0X9F8F72AA9304C8B593D555F12EF6589CC3A579A2-0X6B175474E89094C44DA98B954EEDEAC495271D0F | $1.002 0.0000142 Btc | $6,921,550.00 2,009.148 0X9F8F72AA9304C8B593D555F12EF6589CC3A579A2 | 0.0024% |
5 | Uniswap V3 (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.002 0.0000142 Btc | $6,514,569.00 6,478,820.907 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 7.8428% |
6 | HTX | DAI-USDT | $0.9983 0.0000141 Btc | $6,347,174.00 6,359,870.995 DAI | 7.6988% |
7 | Binance | USDT-DAI | $0.9993 0.0000141 Btc | $5,751,499.00 5,758,237.800 USDT | 6.9705% |
8 | WhiteBIT | DAI-USDT | $0.9981 0.0000141 Btc | $3,801,211.00 3,808,573.830 DAI | 4.6104% |
9 | Cryptology | BTC-DAI | $0.9998 0.0000141 Btc | $2,781,205.00 39.330 BTC | 0.0000% |
10 | BitMart | DAI-USDT | $1.001 0.0000142 Btc | $2,278,575.00 2,277,365.820 DAI | 2.7568% |
11 | Bitrue | DAI-USDT | $1.00 0.0000141 Btc | $2,267,715.00 2,266,869.900 DAI | 2.7441% |
12 | DigiFinex | DAI-USDT | $1.00 0.0000142 Btc | $1,627,102.00 1,627,123.570 DAI | 1.9697% |
13 | LBank | DAI-USDT | $1.001 0.0000142 Btc | $1,474,278.00 1,473,509.670 DAI | 1.7837% |
14 | Coinbase Exchange | DAI-USD | $0.9999 0.0000141 Btc | $1,452,341.00 1,452,485.905 DAI | 1.7583% |
15 | Uniswap V3 (Polygon) | 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $1.00 0.0000141 Btc | $1,319,845.00 1,319,813.260 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | 1.5977% |
16 | BitMart | BTC-DAI | $0.9998 0.0000141 Btc | $1,234,582.00 17.433 BTC | 0.0000% |
17 | XT.COM | BTC-DAI | $0.9998 0.0000141 Btc | $1,152,417.00 16.352 BTC | 0.0000% |
18 | Binance | BTC-DAI | $0.9998 0.0000141 Btc | $1,135,872.00 16.099 BTC | 0.0000% |
19 | Pancakeswap V3 (BSC) | 0X1AF3F329E8BE154074D8769D1FFA4EE058B1DBC3-0X55D398326F99059FF775485246999027B3197955 | $0.9995 0.0000141 Btc | $950,121.00 949,275.930 0X1AF3F329E8BE154074D8769D1FFA4EE058B1DBC3 | 1.1491% |
20 | OKX | DAI-USDT | $1.001 0.0000142 Btc | $937,494.00 936,484.028 DAI | 1.1336% |
21 | Uniswap V3 (Optimism) | 0X94B008AA00579C1307B0EF2C499AD98A8CE58E58-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $0.9978 0.0000141 Btc | $923,240.00 925,454.248 0X94B008AA00579C1307B0EF2C499AD98A8CE58E58 | 1.1203% |
22 | Balancer V2 (Arbitrum) | 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $1.00 0.0000141 Btc | $913,783.00 913,648.166 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | 1.1060% |
23 | Uniswap V3 (Optimism) | 0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $0.9978 0.0000141 Btc | $867,825.00 869,503.707 0X0B2C639C533813F4AA9D7837CAF62653D097FF85 | 1.0526% |
24 | Uniswap V3 (Polygon) | 0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $1.00 0.0000141 Btc | $857,629.00 857,355.660 0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | 1.0378% |
25 | Bitget | DAI-USDT | $1.00 0.0000142 Btc | $770,108.00 769,586.000 DAI | 0.9316% |
26 | Kraken | DAI-USD | $1.00 0.0000142 Btc | $749,720.00 749,757.292 DAI | 0.9076% |
27 | Uniswap V3 (Optimism) | 0X7F5C764CBC14F9669B88837CA1490CCA17C31607-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $0.9978 0.0000141 Btc | $709,395.00 710,744.026 0X7F5C764CBC14F9669B88837CA1490CCA17C31607 | 0.8604% |
28 | Camelot V3 | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $0.9998 0.0000141 Btc | $690,422.00 690,451.907 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 0.8358% |
29 | Kraken | DAI-USDT | $0.9998 0.0000141 Btc | $688,411.00 688,516.620 DAI | 0.8335% |
30 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $1.00 0.0000141 Btc | $670,043.00 670,066.550 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.8111% |
31 | Kraken | DAI-EUR | $0.9999 0.0000141 Btc | $608,088.00 608,159.982 DAI | 0.7362% |
32 | XT.COM | DAI-USDT | $1.001 0.0000141 Btc | $594,967.00 594,236.570 DAI | 0.7193% |
33 | Uniswap V3 (Arbitrum One) | 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $0.9976 0.0000141 Btc | $574,407.00 575,465.034 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | 0.6966% |
34 | Binance | ETH-DAI | $0.9999 0.0000141 Btc | $564,958.00 159.809 ETH | 0.0002% |
35 | Uniswap V2 (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.002 0.0000142 Btc | $551,530.00 550,759.152 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.6667% |
36 | BitMart | DAI-USDC | $0.9998 0.0000141 Btc | $518,013.00 518,094.800 DAI | 0.6272% |
37 | Tapbit | DAI-USDT | $1.00 0.0000141 Btc | $470,456.00 470,139.800 DAI | 0.5691% |
38 | Bybit | DAI-USDT | $1.00 0.0000142 Btc | $448,989.00 448,784.380 DAI | 0.5433% |
39 | Trader Joe V2.1 (Arbitrum) | 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8 | $1.00 0.0000141 Btc | $442,687.00 442,708.069 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | 0.5359% |
40 | Uniswap V3 (Ethereum) | 0X02F92800F57BCD74066F5709F1DAA1A4302DF875-0X6B175474E89094C44DA98B954EEDEAC495271D0F | $0.9974 0.0000141 Btc | $419,872.00 107,421.196 0X02F92800F57BCD74066F5709F1DAA1A4302DF875 | 0.1300% |
41 | KuCoin | USDT-DAI | $0.9998 0.0000141 Btc | $385,386.00 385,308.779 USDT | 0.4664% |
42 | Curve (Optimism) | 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1-0X94B008AA00579C1307B0EF2C499AD98A8CE58E58 | $1.00 0.0000141 Btc | $364,929.00 364,871.514 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | 0.4417% |
43 | Uniswap V3 (Base) | 0X50C5725949A6F0C72E6C4A641F24049A917DB0CB-0XD9AAEC86B65D86F6A7B5B1B0C42FFA531710B6CA | $0.9973 0.0000141 Btc | $362,219.00 363,201.799 0X50C5725949A6F0C72E6C4A641F24049A917DB0CB | 0.4397% |
44 | XT.COM | ETH-DAI | $0.9998 0.0000141 Btc | $297,834.00 84.125 ETH | 0.0001% |
45 | KuCoin | BTC-DAI | $0.9998 0.0000141 Btc | $294,011.00 4.159 BTC | 0.0000% |
46 | Bitunix | DAI-USDT | $1.00 0.0000141 Btc | $281,546.00 281,534.100 DAI | 0.3408% |
47 | Sushiswap | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9964 0.0000141 Btc | $217,853.00 216,574.871 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.2622% |
48 | Hotcoin Global | DAI-USDT | $1.00 0.0000141 Btc | $215,809.00 215,778.110 DAI | 0.2612% |
49 | Curve (Optimism) | 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1-0X7F5C764CBC14F9669B88837CA1490CCA17C31607 | $1.00 0.0000141 Btc | $204,939.00 204,983.569 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | 0.2481% |
50 | Gemini | DAI-USD | $0.999 0.0000141 Btc | $196,845.00 197,035.967 DAI | 0.2385% |
51 | Uniswap V2 (Ethereum) | 0X40803CEA2B2A32BDA1BE61D3604AF6A814E70976-0X6B175474E89094C44DA98B954EEDEAC495271D0F | $0.9998 0.0000141 Btc | $167,556.00 450,081.502 0X40803CEA2B2A32BDA1BE61D3604AF6A814E70976 | 0.5448% |
52 | Binance | BNB-DAI | $0.9999 0.0000141 Btc | $139,193.00 238.144 BNB | 0.0003% |
53 | Emirex | USDT-DAI | $0.9998 0.0000141 Btc | $139,002.00 139,057.120 USDT | 0.1683% |
54 | Quickswap (v3) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $1.001 0.0000141 Btc | $127,837.00 127,740.886 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 0.1546% |
55 | BingX | DAI-USDT | $1.001 0.0000142 Btc | $127,165.00 127,047.954 DAI | 0.1538% |
56 | MEXC | DAI-USDT | $1.00 0.0000141 Btc | $121,371.00 121,312.910 DAI | 0.1469% |
57 | Uniswap V3 (Arbitrum One) | 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1-0XFF970A61A04B1CA14834A43F5DE4533EBDDB5CC8 | $0.9979 0.0000141 Btc | $106,064.00 106,361.787 0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | 0.1288% |
58 | Uniswap V3 (Polygon) | 0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $1.00 0.0000141 Btc | $98,255.00 98,531.894 0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | 0.1193% |
59 | Uniswap V3 (Optimism) | 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $0.9978 0.0000141 Btc | $90,998.00 91,436.310 0X8C6F28F2F1A3C87F0F938B96D27520D9751EC8D9 | 0.1107% |
60 | Bitcointry Exchange | USDT-DAI | $0.9998 0.0000141 Btc | $79,905.00 79,992.525 USDT | 0.0968% |
61 | KuCoin | ETH-DAI | $0.9998 0.0000141 Btc | $75,151.00 21.126 ETH | 0.0000% |
62 | Uniswap V3 (Polygon) | 0X8A16D4BF8A0A716017E8D2262C4AC32927797A2F-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $0.9945 0.0000141 Btc | $63,457.00 3,846.750 0X8A16D4BF8A0A716017E8D2262C4AC32927797A2F | 0.0047% |
63 | Gate.io | DAI-USDT | $0.9992 0.0000141 Btc | $61,167.00 61,114.841 DAI | 0.0740% |
64 | Aerodrome (Base) | 0X50C5725949A6F0C72E6C4A641F24049A917DB0CB-0X833589FCD6EDB6E08F4C7C32D4F71B54BDA02913 | $0.9999 0.0000141 Btc | $56,961.00 57,009.826 0X50C5725949A6F0C72E6C4A641F24049A917DB0CB | 0.0690% |
65 | Quickswap | 0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $0.9936 0.0000141 Btc | $53,161.00 52,260.224 0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | 0.0633% |
66 | Bitget | DAI-USDC | $1.001 0.0000142 Btc | $50,764.00 50,770.000 DAI | 0.0615% |
67 | Balancer V2 | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $0.9971 0.0000141 Btc | $43,428.00 43,966.190 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.0532% |
68 | FameEX | DAI-USDT | $1.001 0.0000141 Btc | $37,371.00 37,312.571 DAI | 0.0452% |
69 | Kraken | ETH-DAI | $0.9999 0.0000142 Btc | $26,348.00 7.432 ETH | 0.0000% |
70 | EXMO | DAI-USDT | $1.001 0.0000142 Btc | $25,894.00 25,869.374 DAI | 0.0313% |
71 | Upbit | DAI-BTC | $1.005 0.0000142 Btc | $25,578.00 25,445.887 DAI | 0.0308% |
72 | Velodrome Finance v2 | 0X7F5C764CBC14F9669B88837CA1490CCA17C31607-0XDA10009CBD5D07DD0CECC66161FC93D7C9000DA1 | $1.001 0.0000141 Btc | $21,096.00 21,086.255 0X7F5C764CBC14F9669B88837CA1490CCA17C31607 | 0.0255% |
73 | CoinEx | DAI-USDT | $1.001 0.0000142 Btc | $17,822.55 17,805.166 DAI | 0.0216% |
74 | PancakeSwap (v2) | 0X1AF3F329E8BE154074D8769D1FFA4EE058B1DBC3-BUSD | $1.001 0.0000142 Btc | $17,537.26 17,626.483 0X1AF3F329E8BE154074D8769D1FFA4EE058B1DBC3 | 0.0213% |
75 | Sushiswap (Polygon POS) | 0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $1.002 0.0000142 Btc | $16,086.22 4.519 0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | 0.0000% |
76 | Bitso | BTC-DAI | $0.9981 0.0000141 Btc | $15,632.09 0.221 BTC | 0.0000% |
77 | Bybit | ETH-DAI | $0.9999 0.0000142 Btc | $12,459.34 3.508 ETH | 0.0000% |
78 | ProBit Global | DAI-USDT | $1.001 0.0000141 Btc | $12,259.65 12,248.509 DAI | 0.0148% |
79 | Bitbank | DAI-JPY | $0.9961 0.0000141 Btc | $10,497.06 10,538.196 DAI | 0.0128% |
80 | Bitso | DAI-MXN | $1.00 0.0000141 Btc | $10,297.59 10,297.876 DAI | 0.0125% |
81 | Phemex | DAI-USDT | $0.9972 0.0000141 Btc | $9,975.32 10,003.320 DAI | 0.0121% |
82 | PointPay | DAI-USDT | $1.001 0.0000141 Btc | $9,891.85 9,874.627 DAI | 0.0120% |
83 | OKX | BTC-DAI | $0.9998 0.0000141 Btc | $9,359.21 0.133 BTC | 0.0000% |
84 | Bitstamp | DAI-USD | $0.999 0.0000141 Btc | $8,352.89 8,361.246 DAI | 0.0101% |
85 | Gate.io | DAI-TRY | $1.003 0.0000142 Btc | $7,947.35 7,919.192 DAI | 0.0096% |
86 | Crypto.com Exchange | DAI-USD | $0.9961 0.0000141 Btc | $6,852.01 6,878.700 DAI | 0.0083% |
87 | Balancer V2 | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $0.9991 0.0000141 Btc | $6,709.09 6,712.851 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.0081% |
88 | Uniswap V2 (Ethereum) | 0X8F8221AFBB33998D8584A2B05749BA73C37A938A-0X6B175474E89094C44DA98B954EEDEAC495271D0F | $1.002 0.0000142 Btc | $6,565.61 37,458.195 0X8F8221AFBB33998D8584A2B05749BA73C37A938A | 0.0453% |
89 | Quickswap | 0XE5417AF564E4BFDA1C483642DB72007871397896-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $1.001 0.0000142 Btc | $6,318.71 1,251.936 0XE5417AF564E4BFDA1C483642DB72007871397896 | 0.0015% |
90 | Bybit | BTC-DAI | $0.9999 0.0000142 Btc | $6,068.76 0.086 BTC | 0.0000% |
91 | Uniswap V3 (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XDAC17F958D2EE523A2206206994597C13D831EC7 | $0.9988 0.0000141 Btc | $5,749.16 5,750.641 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.0070% |
92 | Balancer V1 | 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2-DAI | $0.9998 0.0000141 Btc | $4,237.01 1.204 0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | 0.0000% |
93 | Quickswap | 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174-0X8F3CF7AD23CD3CADBD9735AFF958023239C6A063 | $1.001 0.0000142 Btc | $3,953.68 3,958.685 0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | 0.0048% |
94 | Pancakeswap V1 (BSC) | 0X1AF3F329E8BE154074D8769D1FFA4EE058B1DBC3-0XE9E7CEA3DEDCA5984780BAFC599BD69ADD087D56 | $0.9975 0.0000141 Btc | $3,426.10 3,423.385 0X1AF3F329E8BE154074D8769D1FFA4EE058B1DBC3 | 0.0041% |
95 | Osmosis | IBC/0CD3A0285E1341859B5E86B6AB7682F023D03E97607CCC1DC95706411D866DF7-UOSMO | $0.9991 0.0000141 Btc | $2,438.47 2,440.767 IBC/0CD3A0285E1341859B5E86B6AB7682F023D03E97607CCC1DC95706411D866DF7 | 0.0030% |
96 | DeFi Swap | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XC02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2 | $1.002 0.0000142 Btc | $1,643.14 1,636.706 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.0020% |
97 | Osmosis | IBC/0CD3A0285E1341859B5E86B6AB7682F023D03E97607CCC1DC95706411D866DF7-UOSMO | $1.001 0.0000141 Btc | $1,320.58 1,319.450 IBC/0CD3A0285E1341859B5E86B6AB7682F023D03E97607CCC1DC95706411D866DF7 | 0.0016% |
98 | Bitazza | DAI-THB | $1.004 0.0000142 Btc | $1,292.65 1,291.132 DAI | 0.0016% |
99 | Bitazza | DAI-USDT | $1.002 0.0000141 Btc | $1,290.93 1,291.132 DAI | 0.0016% |
100 | Pancakeswap V3 (Ethereum) | 0X6B175474E89094C44DA98B954EEDEAC495271D0F-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $0.9992 0.0000141 Btc | $336.43 336.735 0X6B175474E89094C44DA98B954EEDEAC495271D0F | 0.0004% |
Contract Name:
Dai
Compiler Version
v0.6.11+commit.5ef660b1
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: AGPL-3.0-or-later // Copyright (C) 2017, 2018, 2019 dbrock, rain, mrchico // Copyright (C) 2021 Dai Foundation // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU Affero General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Affero General Public License for more details. // // You should have received a copy of the GNU Affero General Public License // along with this program. If not, see <https://www.gnu.org/licenses/>. pragma solidity ^0.6.11; // Improved Dai token contract Dai { // --- Auth --- mapping (address => uint256) public wards; function rely(address usr) external auth { wards[usr] = 1; emit Rely(usr); } function deny(address usr) external auth { wards[usr] = 0; emit Deny(usr); } modifier auth { require(wards[msg.sender] == 1, "Dai/not-authorized"); _; } // --- ERC20 Data --- string public constant name = "Dai Stablecoin"; string public constant symbol = "DAI"; string public constant version = "2"; uint8 public constant decimals = 18; uint256 public totalSupply; mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; mapping (address => uint256) public nonces; event Approval(address indexed owner, address indexed spender, uint256 value); event Transfer(address indexed from, address indexed to, uint256 value); event Rely(address indexed usr); event Deny(address indexed usr); // --- Math --- function _add(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x + y) >= x); } function _sub(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x - y) <= x); } // --- EIP712 niceties --- uint256 public immutable deploymentChainId; bytes32 private immutable _DOMAIN_SEPARATOR; bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); constructor() public { wards[msg.sender] = 1; emit Rely(msg.sender); uint256 chainId; assembly {chainId := chainid()} deploymentChainId = chainId; _DOMAIN_SEPARATOR = _calculateDomainSeparator(chainId); } function _calculateDomainSeparator(uint256 chainId) private view returns (bytes32) { return keccak256( abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(name)), keccak256(bytes(version)), chainId, address(this) ) ); } function DOMAIN_SEPARATOR() external view returns (bytes32) { uint256 chainId; assembly {chainId := chainid()} return chainId == deploymentChainId ? _DOMAIN_SEPARATOR : _calculateDomainSeparator(chainId); } // --- ERC20 Mutations --- function transfer(address to, uint256 value) external returns (bool) { require(to != address(0) && to != address(this), "Dai/invalid-address"); uint256 balance = balanceOf[msg.sender]; require(balance >= value, "Dai/insufficient-balance"); balanceOf[msg.sender] = balance - value; balanceOf[to] += value; emit Transfer(msg.sender, to, value); return true; } function transferFrom(address from, address to, uint256 value) external returns (bool) { require(to != address(0) && to != address(this), "Dai/invalid-address"); uint256 balance = balanceOf[from]; require(balance >= value, "Dai/insufficient-balance"); if (from != msg.sender) { uint256 allowed = allowance[from][msg.sender]; if (allowed != type(uint256).max) { require(allowed >= value, "Dai/insufficient-allowance"); allowance[from][msg.sender] = allowed - value; } } balanceOf[from] = balance - value; balanceOf[to] += value; emit Transfer(from, to, value); return true; } function approve(address spender, uint256 value) external returns (bool) { allowance[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } function increaseAllowance(address spender, uint256 addedValue) external returns (bool) { uint256 newValue = _add(allowance[msg.sender][spender], addedValue); allowance[msg.sender][spender] = newValue; emit Approval(msg.sender, spender, newValue); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool) { uint256 allowed = allowance[msg.sender][spender]; require(allowed >= subtractedValue, "Dai/insufficient-allowance"); allowed = allowed - subtractedValue; allowance[msg.sender][spender] = allowed; emit Approval(msg.sender, spender, allowed); return true; } // --- Mint/Burn --- function mint(address to, uint256 value) external auth { require(to != address(0) && to != address(this), "Dai/invalid-address"); balanceOf[to] = balanceOf[to] + value; // note: we don't need an overflow check here b/c balanceOf[to] <= totalSupply and there is an overflow check below totalSupply = _add(totalSupply, value); emit Transfer(address(0), to, value); } function burn(address from, uint256 value) external { uint256 balance = balanceOf[from]; require(balance >= value, "Dai/insufficient-balance"); if (from != msg.sender && wards[msg.sender] != 1) { uint256 allowed = allowance[from][msg.sender]; if (allowed != type(uint256).max) { require(allowed >= value, "Dai/insufficient-allowance"); allowance[from][msg.sender] = allowed - value; } } balanceOf[from] = balance - value; // note: we don't need overflow checks b/c require(balance >= value) and balance <= totalSupply totalSupply = totalSupply - value; emit Transfer(from, address(0), value); } // --- Approve by signature --- function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external { require(block.timestamp <= deadline, "Dai/permit-expired"); uint256 chainId; assembly {chainId := chainid()} bytes32 digest = keccak256(abi.encodePacked( "\x19\x01", chainId == deploymentChainId ? _DOMAIN_SEPARATOR : _calculateDomainSeparator(chainId), keccak256(abi.encode( PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline )) )); require(owner != address(0) && owner == ecrecover(digest, v, r, s), "Dai/invalid-permit"); allowance[owner][spender] = value; emit Approval(owner, spender, value); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"usr","type":"address"}],"name":"Deny","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"usr","type":"address"}],"name":"Rely","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PERMIT_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"usr","type":"address"}],"name":"deny","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"deploymentChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"usr","type":"address"}],"name":"rely","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"wards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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