Address
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
0.000076721053605 ETH4.15 CZK
Confirmed | |
Balance | 0.000076721053605 ETH4.15 CZK |
Transactions | 9 |
Non-contract Transactions | 7 |
Internal Transactions | 0 |
Nonce | 6 |
Contract | Quantity | Value | Transfers# |
---|---|---|---|
NuggetRush | 0 NUGX | - | 4 |
Transactions
mined 339 days 6 hours ago
Transfer
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
0.022319629240428597 ETH1956.19 CZK1206.87 CZK
mined 339 days 6 hours ago
Swap (0x5f575529)
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
0 ETH0.00 CZK0.00 CZK
ERC20 Token Transfers
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
12525 NUGX0.002124 ETH114.84 CZK
0.010784962142276132 WETH0.010784 ETH583.11 CZK
12525 NUGX0.002124 ETH114.84 CZK
mined 340 days 3 hours ago
Multi Send Token (0x8e899718)
0.03 ETH2599.74 CZK1622.16 CZK
ERC20 Token Transfers
1597 NUGX0.000271 ETH14.64 CZK
2892 NUGX0.000490 ETH26.52 CZK
18958 NUGX0.003215 ETH173.82 CZK
22200 NUGX0.003764 ETH203.55 CZK
1316 NUGX0.000223 ETH12.07 CZK
5072 NUGX0.000860 ETH46.50 CZK
3333 NUGX0.000565 ETH30.56 CZK
19961 NUGX0.003385 ETH183.02 CZK
15084 NUGX0.002558 ETH138.30 CZK
3333 NUGX0.000565 ETH30.56 CZK
14210 NUGX0.002410 ETH130.29 CZK
3037 NUGX0.000515 ETH27.85 CZK
11201 NUGX0.001899 ETH102.70 CZK
35517 NUGX0.006023 ETH325.65 CZK
1389 NUGX0.000236 ETH12.74 CZK
579 NUGX0.000098 ETH5.31 CZK
1389 NUGX0.000236 ETH12.74 CZK
2992 NUGX0.000507 ETH27.43 CZK
3509 NUGX0.000595 ETH32.17 CZK
22452 NUGX0.003807 ETH205.86 CZK
1551 NUGX0.000263 ETH14.22 CZK
6579 NUGX0.001116 ETH60.32 CZK
19078 NUGX0.003235 ETH174.92 CZK
2778 NUGX0.000471 ETH25.47 CZK
1531 NUGX0.000260 ETH14.04 CZK
1595 NUGX0.000270 ETH14.62 CZK
172500 NUGX0.029251 ETH1581.64 CZK
5053 NUGX0.000857 ETH46.33 CZK
4263 NUGX0.000723 ETH39.09 CZK
2632 NUGX0.000446 ETH24.13 CZK
30263 NUGX0.005132 ETH277.48 CZK
13815 NUGX0.002343 ETH126.67 CZK
2605 NUGX0.000442 ETH23.89 CZK
2553 NUGX0.000433 ETH23.41 CZK
1316 NUGX0.000223 ETH12.07 CZK
65598 NUGX0.011123 ETH601.46 CZK
11710 NUGX0.001986 ETH107.37 CZK
3447 NUGX0.000585 ETH31.61 CZK
6947 NUGX0.001178 ETH63.70 CZK
7895 NUGX0.001339 ETH72.39 CZK
2632 NUGX0.000446 ETH24.13 CZK
7528 NUGX0.001277 ETH69.02 CZK
19078 NUGX0.003235 ETH174.92 CZK
7894 NUGX0.001339 ETH72.38 CZK
11579 NUGX0.001963 ETH106.17 CZK
57895 NUGX0.009817 ETH530.84 CZK
1507 NUGX0.000256 ETH13.82 CZK
26118 NUGX0.004429 ETH239.47 CZK
2158 NUGX0.000366 ETH19.79 CZK
15789 NUGX0.002677 ETH144.77 CZK
29942 NUGX0.005077 ETH274.54 CZK
2632 NUGX0.000446 ETH24.13 CZK
7158 NUGX0.001214 ETH65.63 CZK
5245 NUGX0.000889 ETH48.09 CZK
1483 NUGX0.000251 ETH13.60 CZK
1316 NUGX0.000223 ETH12.07 CZK
1847 NUGX0.000313 ETH16.94 CZK
1316 NUGX0.000223 ETH12.07 CZK
3158 NUGX0.000535 ETH28.96 CZK
31518 NUGX0.005344 ETH288.99 CZK
3947 NUGX0.000669 ETH36.19 CZK
2237 NUGX0.000379 ETH20.51 CZK
5496 NUGX0.000932 ETH50.39 CZK
2632 NUGX0.000446 ETH24.13 CZK
29674 NUGX0.005032 ETH272.08 CZK
13971 NUGX0.002369 ETH128.10 CZK
6052 NUGX0.001026 ETH55.49 CZK
1974 NUGX0.000335 ETH18.10 CZK
29671 NUGX0.005031 ETH272.05 CZK
6920 NUGX0.001173 ETH63.45 CZK
13470 NUGX0.002284 ETH123.51 CZK
3158 NUGX0.000535 ETH28.96 CZK
1439 NUGX0.000244 ETH13.19 CZK
28309 NUGX0.004800 ETH259.56 CZK
13263 NUGX0.002249 ETH121.61 CZK
14473 NUGX0.002454 ETH132.70 CZK
13788 NUGX0.002338 ETH126.42 CZK
29692 NUGX0.005035 ETH272.24 CZK
5263 NUGX0.000892 ETH48.26 CZK
5263 NUGX0.000892 ETH48.26 CZK
2632 NUGX0.000446 ETH24.13 CZK
14368 NUGX0.002436 ETH131.74 CZK
1588 NUGX0.000269 ETH14.56 CZK
2759 NUGX0.000468 ETH25.30 CZK
4567 NUGX0.000774 ETH41.87 CZK
28947 NUGX0.004909 ETH265.41 CZK
2876 NUGX0.000488 ETH26.37 CZK
1316 NUGX0.000223 ETH12.07 CZK
4763 NUGX0.000808 ETH43.67 CZK
6897 NUGX0.001170 ETH63.24 CZK
2500 NUGX0.000424 ETH22.92 CZK
68125 NUGX0.011552 ETH624.63 CZK
2886 NUGX0.000489 ETH26.46 CZK
294078 NUGX0.049867 ETH2696.38 CZK
1316 NUGX0.000223 ETH12.07 CZK
38157 NUGX0.006470 ETH349.86 CZK
2844 NUGX0.000482 ETH26.08 CZK
7895 NUGX0.001339 ETH72.39 CZK
3158 NUGX0.000535 ETH28.96 CZK
4500 NUGX0.000763 ETH41.26 CZK
5731 NUGX0.000972 ETH52.55 CZK
86250 NUGX0.014625 ETH790.82 CZK
12500 NUGX0.002120 ETH114.61 CZK
88178 NUGX0.014952 ETH808.50 CZK
2105 NUGX0.000357 ETH19.30 CZK
19078 NUGX0.003235 ETH174.92 CZK
14400 NUGX0.002442 ETH132.03 CZK
13815 NUGX0.002343 ETH126.67 CZK
1553 NUGX0.000263 ETH14.24 CZK
1644 NUGX0.000279 ETH15.07 CZK
2884 NUGX0.000489 ETH26.44 CZK
1567 NUGX0.000266 ETH14.37 CZK
8651 NUGX0.001467 ETH79.32 CZK
4605 NUGX0.000781 ETH42.22 CZK
1316 NUGX0.000223 ETH12.07 CZK
6821 NUGX0.001157 ETH62.54 CZK
1579 NUGX0.000268 ETH14.48 CZK
1842 NUGX0.000312 ETH16.89 CZK
2632 NUGX0.000446 ETH24.13 CZK
2632 NUGX0.000446 ETH24.13 CZK
2632 NUGX0.000446 ETH24.13 CZK
5815 NUGX0.000986 ETH53.32 CZK
1316 NUGX0.000223 ETH12.07 CZK
33368 NUGX0.005658 ETH305.95 CZK
1789 NUGX0.000303 ETH16.40 CZK
3000 NUGX0.000509 ETH27.51 CZK
6579 NUGX0.001116 ETH60.32 CZK
6579 NUGX0.001116 ETH60.32 CZK
1316 NUGX0.000223 ETH12.07 CZK
1657 NUGX0.000281 ETH15.19 CZK
22289 NUGX0.003780 ETH204.37 CZK
40163 NUGX0.006810 ETH368.25 CZK
12931 NUGX0.002193 ETH118.56 CZK
118801 NUGX0.020145 ETH1089.28 CZK
2632 NUGX0.000446 ETH24.13 CZK
124899 NUGX0.021179 ETH1145.19 CZK
6579 NUGX0.001116 ETH60.32 CZK
124341 NUGX0.021084 ETH1140.07 CZK
90789 NUGX0.015395 ETH832.44 CZK
1263 NUGX0.000214 ETH11.58 CZK
2807 NUGX0.000476 ETH25.74 CZK
12105 NUGX0.002053 ETH110.99 CZK
1316 NUGX0.000223 ETH12.07 CZK
1921 NUGX0.000326 ETH17.61 CZK
2500 NUGX0.000424 ETH22.92 CZK
28380 NUGX0.004812 ETH260.21 CZK
13815 NUGX0.002343 ETH126.67 CZK
7895 NUGX0.001339 ETH72.39 CZK
3947 NUGX0.000669 ETH36.19 CZK
18684 NUGX0.003168 ETH171.31 CZK
28323 NUGX0.004803 ETH259.69 CZK
5707 NUGX0.000968 ETH52.33 CZK
13788 NUGX0.002338 ETH126.42 CZK
44034 NUGX0.007467 ETH403.74 CZK
57895 NUGX0.009817 ETH530.84 CZK
14326 NUGX0.002429 ETH131.35 CZK
3947 NUGX0.000669 ETH36.19 CZK
3684 NUGX0.000625 ETH33.78 CZK
2632 NUGX0.000446 ETH24.13 CZK
2853 NUGX0.000484 ETH26.16 CZK
13622 NUGX0.002310 ETH124.90 CZK
1658 NUGX0.000281 ETH15.20 CZK
4244 NUGX0.000720 ETH38.91 CZK
2368 NUGX0.000402 ETH21.71 CZK
50653 NUGX0.008589 ETH464.43 CZK
2632 NUGX0.000446 ETH24.13 CZK
1627 NUGX0.000276 ETH14.92 CZK
5526 NUGX0.000937 ETH50.67 CZK
3031 NUGX0.000514 ETH27.79 CZK
6579 NUGX0.001116 ETH60.32 CZK
1579 NUGX0.000268 ETH14.48 CZK
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
12525 NUGX0.002124 ETH114.84 CZK
56381 NUGX0.009560 ETH516.95 CZK
7215 NUGX0.001223 ETH66.15 CZK
28416 NUGX0.004818 ETH260.54 CZK
1822 NUGX0.000309 ETH16.71 CZK
3466 NUGX0.000588 ETH31.78 CZK
5658 NUGX0.000959 ETH51.88 CZK
1704 NUGX0.000289 ETH15.62 CZK
17631 NUGX0.002990 ETH161.66 CZK
1316 NUGX0.000223 ETH12.07 CZK
28300 NUGX0.004799 ETH259.48 CZK
1599 NUGX0.000271 ETH14.66 CZK
14021 NUGX0.002378 ETH128.56 CZK
2632 NUGX0.000446 ETH24.13 CZK
30164 NUGX0.005115 ETH276.57 CZK
6864 NUGX0.001164 ETH62.94 CZK
1622 NUGX0.000275 ETH14.87 CZK
5308 NUGX0.000900 ETH48.67 CZK
2936 NUGX0.000498 ETH26.92 CZK
2803 NUGX0.000475 ETH25.70 CZK
2881 NUGX0.000489 ETH26.42 CZK
4789 NUGX0.000812 ETH43.91 CZK
19065 NUGX0.003233 ETH174.81 CZK
14357 NUGX0.002435 ETH131.64 CZK
1630 NUGX0.000276 ETH14.95 CZK
5562 NUGX0.000943 ETH51.00 CZK
2861 NUGX0.000485 ETH26.23 CZK
1518 NUGX0.000257 ETH13.92 CZK
2881 NUGX0.000489 ETH26.42 CZK
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
0.02265 ETH1224.73 CZK
mined 343 days 1 hour ago
Swap (0x5f575529)
ERC20 Token Transfers
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
12525 NUGX0.002124 ETH114.84 CZK
0.019512763051637229 WETH0.019511 ETH1054.99 CZK
12525 NUGX0.002124 ETH114.84 CZK
mined 343 days 1 hour ago
Approve (0x095ea7b3)
mined 347 days 4 hours ago
Multi Send Token (0x8e899718)
0.03 ETH1622.16 CZK
ERC20 Token Transfers
29674 NUGX0.005032 ETH272.08 CZK
13971 NUGX0.002369 ETH128.10 CZK
6052 NUGX0.001026 ETH55.49 CZK
1974 NUGX0.000335 ETH18.10 CZK
29671 NUGX0.005031 ETH272.05 CZK
6920 NUGX0.001173 ETH63.45 CZK
13470 NUGX0.002284 ETH123.51 CZK
3158 NUGX0.000535 ETH28.96 CZK
1439 NUGX0.000244 ETH13.19 CZK
28309 NUGX0.004800 ETH259.56 CZK
13263 NUGX0.002249 ETH121.61 CZK
14473 NUGX0.002454 ETH132.70 CZK
13788 NUGX0.002338 ETH126.42 CZK
29692 NUGX0.005035 ETH272.24 CZK
5263 NUGX0.000892 ETH48.26 CZK
5263 NUGX0.000892 ETH48.26 CZK
2632 NUGX0.000446 ETH24.13 CZK
14368 NUGX0.002436 ETH131.74 CZK
1588 NUGX0.000269 ETH14.56 CZK
2759 NUGX0.000468 ETH25.30 CZK
4567 NUGX0.000774 ETH41.87 CZK
28947 NUGX0.004909 ETH265.41 CZK
2876 NUGX0.000488 ETH26.37 CZK
1316 NUGX0.000223 ETH12.07 CZK
4763 NUGX0.000808 ETH43.67 CZK
6897 NUGX0.001170 ETH63.24 CZK
2500 NUGX0.000424 ETH22.92 CZK
68125 NUGX0.011552 ETH624.63 CZK
2886 NUGX0.000489 ETH26.46 CZK
294078 NUGX0.049867 ETH2696.38 CZK
1316 NUGX0.000223 ETH12.07 CZK
38157 NUGX0.006470 ETH349.86 CZK
2844 NUGX0.000482 ETH26.08 CZK
7895 NUGX0.001339 ETH72.39 CZK
3158 NUGX0.000535 ETH28.96 CZK
4500 NUGX0.000763 ETH41.26 CZK
5731 NUGX0.000972 ETH52.55 CZK
86250 NUGX0.014625 ETH790.82 CZK
12500 NUGX0.002120 ETH114.61 CZK
88178 NUGX0.014952 ETH808.50 CZK
2105 NUGX0.000357 ETH19.30 CZK
19078 NUGX0.003235 ETH174.92 CZK
14400 NUGX0.002442 ETH132.03 CZK
13815 NUGX0.002343 ETH126.67 CZK
1553 NUGX0.000263 ETH14.24 CZK
1644 NUGX0.000279 ETH15.07 CZK
2884 NUGX0.000489 ETH26.44 CZK
1567 NUGX0.000266 ETH14.37 CZK
8651 NUGX0.001467 ETH79.32 CZK
4605 NUGX0.000781 ETH42.22 CZK
1316 NUGX0.000223 ETH12.07 CZK
6821 NUGX0.001157 ETH62.54 CZK
1579 NUGX0.000268 ETH14.48 CZK
1842 NUGX0.000312 ETH16.89 CZK
2632 NUGX0.000446 ETH24.13 CZK
2632 NUGX0.000446 ETH24.13 CZK
2632 NUGX0.000446 ETH24.13 CZK
5815 NUGX0.000986 ETH53.32 CZK
1316 NUGX0.000223 ETH12.07 CZK
33368 NUGX0.005658 ETH305.95 CZK
1789 NUGX0.000303 ETH16.40 CZK
3000 NUGX0.000509 ETH27.51 CZK
6579 NUGX0.001116 ETH60.32 CZK
6579 NUGX0.001116 ETH60.32 CZK
1316 NUGX0.000223 ETH12.07 CZK
1657 NUGX0.000281 ETH15.19 CZK
22289 NUGX0.003780 ETH204.37 CZK
40163 NUGX0.006810 ETH368.25 CZK
12931 NUGX0.002193 ETH118.56 CZK
118801 NUGX0.020145 ETH1089.28 CZK
2632 NUGX0.000446 ETH24.13 CZK
124899 NUGX0.021179 ETH1145.19 CZK
6579 NUGX0.001116 ETH60.32 CZK
124341 NUGX0.021084 ETH1140.07 CZK
90789 NUGX0.015395 ETH832.44 CZK
1263 NUGX0.000214 ETH11.58 CZK
2807 NUGX0.000476 ETH25.74 CZK
12105 NUGX0.002053 ETH110.99 CZK
1316 NUGX0.000223 ETH12.07 CZK
1921 NUGX0.000326 ETH17.61 CZK
2500 NUGX0.000424 ETH22.92 CZK
28380 NUGX0.004812 ETH260.21 CZK
13815 NUGX0.002343 ETH126.67 CZK
7895 NUGX0.001339 ETH72.39 CZK
3947 NUGX0.000669 ETH36.19 CZK
18684 NUGX0.003168 ETH171.31 CZK
28323 NUGX0.004803 ETH259.69 CZK
5707 NUGX0.000968 ETH52.33 CZK
13788 NUGX0.002338 ETH126.42 CZK
44034 NUGX0.007467 ETH403.74 CZK
57895 NUGX0.009817 ETH530.84 CZK
14326 NUGX0.002429 ETH131.35 CZK
3947 NUGX0.000669 ETH36.19 CZK
3684 NUGX0.000625 ETH33.78 CZK
2632 NUGX0.000446 ETH24.13 CZK
2853 NUGX0.000484 ETH26.16 CZK
13622 NUGX0.002310 ETH124.90 CZK
1658 NUGX0.000281 ETH15.20 CZK
4244 NUGX0.000720 ETH38.91 CZK
2368 NUGX0.000402 ETH21.71 CZK
50653 NUGX0.008589 ETH464.43 CZK
2632 NUGX0.000446 ETH24.13 CZK
1627 NUGX0.000276 ETH14.92 CZK
5526 NUGX0.000937 ETH50.67 CZK
3031 NUGX0.000514 ETH27.79 CZK
6579 NUGX0.001116 ETH60.32 CZK
1579 NUGX0.000268 ETH14.48 CZK
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
12525 NUGX0.002124 ETH114.84 CZK
56381 NUGX0.009560 ETH516.95 CZK
7215 NUGX0.001223 ETH66.15 CZK
28416 NUGX0.004818 ETH260.54 CZK
1822 NUGX0.000309 ETH16.71 CZK
3466 NUGX0.000588 ETH31.78 CZK
5658 NUGX0.000959 ETH51.88 CZK
1704 NUGX0.000289 ETH15.62 CZK
17631 NUGX0.002990 ETH161.66 CZK
1316 NUGX0.000223 ETH12.07 CZK
28300 NUGX0.004799 ETH259.48 CZK
1599 NUGX0.000271 ETH14.66 CZK
14021 NUGX0.002378 ETH128.56 CZK
2632 NUGX0.000446 ETH24.13 CZK
30164 NUGX0.005115 ETH276.57 CZK
6864 NUGX0.001164 ETH62.94 CZK
1622 NUGX0.000275 ETH14.87 CZK
5308 NUGX0.000900 ETH48.67 CZK
2936 NUGX0.000498 ETH26.92 CZK
2803 NUGX0.000475 ETH25.70 CZK
2881 NUGX0.000489 ETH26.42 CZK
4789 NUGX0.000812 ETH43.91 CZK
19065 NUGX0.003233 ETH174.81 CZK
14357 NUGX0.002435 ETH131.64 CZK
1630 NUGX0.000276 ETH14.95 CZK
5562 NUGX0.000943 ETH51.00 CZK
2861 NUGX0.000485 ETH26.23 CZK
1518 NUGX0.000257 ETH13.92 CZK
2881 NUGX0.000489 ETH26.42 CZK
6579 NUGX0.001116 ETH60.32 CZK
2631 NUGX0.000446 ETH24.12 CZK
2632 NUGX0.000446 ETH24.13 CZK
17216 NUGX0.002919 ETH157.85 CZK
59315 NUGX0.010058 ETH543.86 CZK
5263 NUGX0.000892 ETH48.26 CZK
55058 NUGX0.009336 ETH504.82 CZK
11509 NUGX0.001952 ETH105.53 CZK
1316 NUGX0.000223 ETH12.07 CZK
28947 NUGX0.004909 ETH265.41 CZK
3161 NUGX0.000536 ETH28.98 CZK
2632 NUGX0.000446 ETH24.13 CZK
28247 NUGX0.004790 ETH258.99 CZK
1641 NUGX0.000278 ETH15.05 CZK
1316 NUGX0.000223 ETH12.07 CZK
1890 NUGX0.000320 ETH17.33 CZK
1316 NUGX0.000223 ETH12.07 CZK
2632 NUGX0.000446 ETH24.13 CZK
15660 NUGX0.002655 ETH143.59 CZK
2631 NUGX0.000446 ETH24.12 CZK
1624 NUGX0.000275 ETH14.89 CZK
13945 NUGX0.002365 ETH127.86 CZK
13677 NUGX0.002319 ETH125.40 CZK
1842 NUGX0.000312 ETH16.89 CZK
1601 NUGX0.000271 ETH14.68 CZK
2237 NUGX0.000379 ETH20.51 CZK
3421 NUGX0.000580 ETH31.37 CZK
29804 NUGX0.005054 ETH273.27 CZK
88640 NUGX0.015031 ETH812.73 CZK
1515 NUGX0.000257 ETH13.89 CZK
3928 NUGX0.000666 ETH36.02 CZK
4220 NUGX0.000716 ETH38.69 CZK
17645 NUGX0.002992 ETH161.79 CZK
28345 NUGX0.004806 ETH259.89 CZK
5650 NUGX0.000958 ETH51.80 CZK
14351 NUGX0.002433 ETH131.58 CZK
118795 NUGX0.020144 ETH1089.22 CZK
1316 NUGX0.000223 ETH12.07 CZK
30037 NUGX0.005093 ETH275.41 CZK
1610 NUGX0.000273 ETH14.76 CZK
6094 NUGX0.001033 ETH55.88 CZK
42651 NUGX0.007232 ETH391.06 CZK
14451 NUGX0.002450 ETH132.50 CZK
107786 NUGX0.018277 ETH988.28 CZK
120986 NUGX0.020515 ETH1109.31 CZK
1659 NUGX0.000281 ETH15.21 CZK
1816 NUGX0.000308 ETH16.65 CZK
4585 NUGX0.000777 ETH42.04 CZK
14438 NUGX0.002448 ETH132.38 CZK
2632 NUGX0.000446 ETH24.13 CZK
2632 NUGX0.000446 ETH24.13 CZK
5693 NUGX0.000965 ETH52.20 CZK
7059 NUGX0.001197 ETH64.72 CZK
5526 NUGX0.000937 ETH50.67 CZK
3410 NUGX0.000578 ETH31.27 CZK
15098 NUGX0.002560 ETH138.43 CZK
18801 NUGX0.003188 ETH172.39 CZK
1561 NUGX0.000265 ETH14.31 CZK
5263 NUGX0.000892 ETH48.26 CZK
526328 NUGX0.089249 ETH4825.87 CZK
17841 NUGX0.003025 ETH163.58 CZK
76710 NUGX0.013008 ETH703.35 CZK
28947 NUGX0.004909 ETH265.41 CZK
86842 NUGX0.014726 ETH796.25 CZK
mined 430 days 21 hours ago
Transfer
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
0.058643433584638 ETH4904.05 CZK3170.97 CZK
mined 430 days 22 hours ago
Transfer
0xF63dc0faaFEaBf568C84b51b80a10aB337bf21a5
0.06295534 ETH5264.63 CZK3404.12 CZK