Block

21939565
0x0e78e50500c21ba003b85e48fb73c3505d4b4b8cb707c868e5d95e4fa29524d8
Transactions283
Height21939565
Confirmations3457
Timestamp11 hours 33 mins ago
Size (bytes)124549
Version
Merkle Root
Nonce0x0000000000000000
Bits
Difficulty0x0

Transactions

0xed72a3ca4eff34a6e875ba337e9d1218e8a3414c11816585908d3113a7a6327a
mined 11 hours 33 mins ago
0x00000000
0xaF1E598fDc6690A2395cA73404731f30e4ab667C
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
0.000000000000012347 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x11b815efB8f581194ae79006d24E0d814B7697F6
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
20.80595088513044913 WETH20.811236 ETH4399.29 VEF
0xEff6cb8b614999d130E537751Ee99724D01aA167
 
0x11b815efB8f581194ae79006d24E0d814B7697F6
48447.423113 USDT22.911271 ETH4843.21 VEF
Fee 0.000096865693718636 ETH0.02 VEF0.02 VEF (0.773366443 Gwei/gas)
3457 confirmations0.000000000000012347 ETH0.00 VEF0.00 VEF
0x4048ac1c3ff4f81ecd9f390eedc884350888e0977bde069cb7300bc6e6a87198
mined 11 hours 33 mins ago
0x00000000
0x662809560ca76fFB2644752521755F096a0A8C3C
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
0.000000000000012425 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
15.971687960481948691 WETH15.975745 ETH3377.11 VEF
0xEff6cb8b614999d130E537751Ee99724D01aA167
 
0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640
37151.802317 USDC17.609954 ETH3722.57 VEF
Fee 0.00009689508164347 ETH0.02 VEF0.02 VEF (0.773366443 Gwei/gas)
3457 confirmations0.000000000000012425 ETH0.00 VEF0.00 VEF
0xbc7c49fb4bccfe3677b2752f37e104efcdfdd15f991691ad9d4e89fb7ded0cc7
mined 11 hours 33 mins ago
0x95305e90
0x9928Ee3165C1Fe595952f391fb0cF70673E78C07
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
0.000000000000013127 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xEff6cb8b614999d130E537751Ee99724D01aA167
 
0x000000000004444c5dc75cB358380D2e3dE08A90
7475.363874 USDT3.535174 ETH747.30 VEF
Fee 0.000104703762618441 ETH0.02 VEF0.02 VEF (0.773366443 Gwei/gas)
3457 confirmations0.000000000000013127 ETH0.00 VEF0.00 VEF
0x378c5246c2ceecea7f41199bc573939e15dcaf4da9a7dee9b3fe4f0b3d246930
mined 11 hours 33 mins ago
0x95305e90
0x8a6Aad705C815f9aaef790055e5caa1998dEFEcB
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
0.000000000000013244 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xEff6cb8b614999d130E537751Ee99724D01aA167
 
0x000000000004444c5dc75cB358380D2e3dE08A90
3357.222849 USDC1.591324 ETH336.39 VEF
Fee 0.000120916986437562 ETH0.03 VEF0.03 VEF (0.934833597 Gwei/gas)
3457 confirmations0.000000000000013244 ETH0.00 VEF0.00 VEF
0x49837dec55da739399e400e98bc66ab394b6e5a5b2275fe69a0a6e66e986f190
mined 11 hours 33 mins ago
0x00000000
0x9938b504bc088dF8d5831cd53073F94333c24358
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
0.000000000000012893 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xc7bBeC68d12a0d1830360F8Ec58fA599bA1b0e9b
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
1.690675760338225348 WETH1.691105 ETH357.48 VEF
0xEff6cb8b614999d130E537751Ee99724D01aA167
 
0xc7bBeC68d12a0d1830360F8Ec58fA599bA1b0e9b
3936.518897 USDT1.861619 ETH393.53 VEF
Fee 0.000096761289248831 ETH0.02 VEF0.02 VEF (0.773366443 Gwei/gas)
3457 confirmations0.000000000000012893 ETH0.00 VEF0.00 VEF
0xf4e34c477b5ffbecafaa96bf22f6f82639703e5ed71bb9ae548f61aa76b0aaad
mined 11 hours 33 mins ago
0x00000000
0xBD783513552DC7b68814bb7b7d105C19a0f4d341
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
0.000000000000012932 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
 
0xEff6cb8b614999d130E537751Ee99724D01aA167
1.913095035382966304 WETH1.913581 ETH404.51 VEF
0xEff6cb8b614999d130E537751Ee99724D01aA167
 
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
4449.131744 USDC2.108888 ETH445.80 VEF
Fee 0.00009687188065018 ETH0.02 VEF0.02 VEF (0.773366443 Gwei/gas)
3457 confirmations0.000000000000012932 ETH0.00 VEF0.00 VEF
0xa0d44b4979b33001c1485d8632d36162e99f56b7ab37f2ee30597a12eee50dbe
mined 11 hours 33 mins ago
0x5a7b05e8
0xc5d4ec9300be6dA89a3db305C415C7cD3cBB7E8E
 
0x99B1817acb40E76C309e26B2Face9da9EFf55317
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x489cEbE6Cd5DC5dcB7047A1F0D4F358a5d2fB295
 
0xc5d4ec9300be6dA89a3db305C415C7cD3cBB7E8E
0.999893050091985591 WETH1.000147 ETH211.42 VEF
0xc5d4ec9300be6dA89a3db305C415C7cD3cBB7E8E
 
0x489cEbE6Cd5DC5dcB7047A1F0D4F358a5d2fB295
54398.373434480000000235 IOTX0.482514 ETH102.00 VEF
Fee 0.004926005518035225 ETH1.15 VEF1.04 VEF (42.563534325 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x94a9ae5695a86448b25a1fdda068611e582371ea8dc77727b424d3353f26cc3a
mined 11 hours 33 mins ago
0x51337d44
0x7049a18279500a25864c509137d7de4ff0048957
 
0x3B55732F6D3997A7D44A041b8496e1A60712A35F
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x51C72848c68a965f66FA7a88855F9f7784502a7F
 
0x52Aa899454998Be5b000Ad077a46Bbe360F4e497
87932.325469 USDC41.679922 ETH8810.72 VEF
0x3B55732F6D3997A7D44A041b8496e1A60712A35F
 
0x51C72848c68a965f66FA7a88855F9f7784502a7F
37.803724575389 WETH37.813328 ETH7993.36 VEF
Fee 0.003093250132404562 ETH0.72 VEF0.65 VEF (14.096944006 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x418c8772b168bad445a32d6031bb365b707542a6b45c6a8995f1e8205266cc9e
mined 11 hours 33 mins ago
0xfb034fb2
0x867bDC57D1B071FE5A9F670Dd70b91E4269814D3
 
0x51C72848c68a965f66FA7a88855F9f7784502a7F
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x51C72848c68a965f66FA7a88855F9f7784502a7F
 
TricryptoUSDT
14203.804123 USDT6.717121 ETH1419.93 VEF
TricryptoUSDT
 
0x51C72848c68a965f66FA7a88855F9f7784502a7F
6.100220611220828098 WETH6.101770 ETH1289.85 VEF
Fee 0.002037491343842808 ETH0.48 VEF0.43 VEF (9.971230584 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0xcd460cd90944024407f8ea7702e608a7fcdc1d14606685b6ed48343483c736c5
mined 11 hours 33 mins ago
0x6440a7b4
0x6Ec06F16C22C7FC87D9CEACC677A5Dec4aA36CbC
 
0xEc6FC9be2d5e505b40A2DF8B0622cD25333823db
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x51C72848c68a965f66FA7a88855F9f7784502a7F
 
0xEc6FC9be2d5e505b40A2DF8B0622cD25333823db
9308.25067 USDT4.401965 ETH930.53 VEF
0xEc6FC9be2d5e505b40A2DF8B0622cD25333823db
 
0xD51a44d3FaE010294C616388b506AcdA1bfAAE46
9308.25067 USDT4.401965 ETH930.53 VEF
0xD51a44d3FaE010294C616388b506AcdA1bfAAE46
 
0xEc6FC9be2d5e505b40A2DF8B0622cD25333823db
3.998050219681192654 WETH3.999066 ETH845.36 VEF
0xEc6FC9be2d5e505b40A2DF8B0622cD25333823db
 
0x51C72848c68a965f66FA7a88855F9f7784502a7F
3.998050219681192654 WETH3.999066 ETH845.36 VEF
Fee 0.001654306909682364 ETH0.39 VEF0.35 VEF (5.554571463 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x131d02acd61205580d51f1e23e07d3c7e6b58df8fce933118f2153cec1b6da3c
mined 11 hours 33 mins ago
0x1c8ef6c6
0x54620B9A8a2C43AA8Ed028450a7ce656a9C69FeB
 
0x94F001f4F47fBC14DfDafFC8a66364Db08a6e960
0.43180969283217504 ETH100.72 VEF91.28 VEF
ERC20 Token Transfers
0x70c6Bd8Fc6C48DC57F95c9B8aDff4Ab9f0e19f5a
 
0x0BF3597FD15EFe8c7DA8aDb37E5C71aB96dA1b90
32087.614641325957370342 MDT0.416497 ETH88.04 VEF
0x94F001f4F47fBC14DfDafFC8a66364Db08a6e960
 
0x70c6Bd8Fc6C48DC57F95c9B8aDff4Ab9f0e19f5a
0.43180969283217504 WETH0.431919 ETH91.30 VEF
Fee 0.001357939746674378 ETH0.32 VEF0.29 VEF (10.773366443 Gwei/gas)
3457 confirmations0.43180969283217504 ETH100.72 VEF91.28 VEF
0x258cfe46e04fcfb6074bd0b44326e59495ef05997ecdcbede9fa7a97ecd531d1
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
Amp
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
0x818A14e665E0119906926209D09d13B2Eab0c211
2705099.8798 AMP5.518404 ETH1166.54 VEF
Fee 0.001312969381660722 ETH0.31 VEF0.28 VEF (8.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x82ee153a0efa3bedc6fc41c46e659ff0a3e64bd5d92c6481c4e0a1f2a70d8934
mined 11 hours 33 mins ago
0xa0000000
0x3EFf3Dc5A4f5c65d28E88dc8fD22800979C9E7C6
 
0x68d3A973E7272EB388022a5C6518d9b2a2e66fBf
0.000000000021939565 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x6CA298D2983aB03Aa1dA7679389D955A4eFEE15C
 
0x68d3A973E7272EB388022a5C6518d9b2a2e66fBf
2.584899433489666167 WETH2.585556 ETH546.56 VEF
0x68d3A973E7272EB388022a5C6518d9b2a2e66fBf
 
0x6CA298D2983aB03Aa1dA7679389D955A4eFEE15C
6018.450245 USDT2.846185 ETH601.66 VEF
Fee 0.000504471220827702 ETH0.12 VEF0.11 VEF (3.137610061 Gwei/gas)
3457 confirmations0.000000000021939565 ETH0.00 VEF0.00 VEF
0x0071f8b2de2c92dbf0d696a8b7e802b10790b986b30d359ae16bebfe0de4219b
mined 11 hours 33 mins ago
0xc7c7f5b3
0x49E96E255bA418d08E66c35b588E2f2F3766E1d0
 
0x77b2043768d28E9C9aB44E1aBfC95944bcE57931
33.000008266906213834 ETH7697.15 VEF6975.87 VEF
Fee 0.000949826194032424 ETH0.22 VEF0.20 VEF (3.273366443 Gwei/gas)
3457 confirmations33.000008266906213834 ETH7697.15 VEF6975.87 VEF
0x0e637c6bec756fb7b93e3c132b5500d38be5485780280536f4daa1d841a41516
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0x7C85EfaE26A12bBA9F31c3A9B03E6714f079326f
 
Tether USD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x7C85EfaE26A12bBA9F31c3A9B03E6714f079326f
 
0x22e5CcCfd7F97BeA86eFc969fD1e58DeB4308512
5000 USDT2.364550 ETH499.84 VEF
Fee 0.000548898447752555 ETH0.13 VEF0.12 VEF (8.683865395 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0xf3c75e8e5a1412864d642343dfddece3b1eacdf73ff1a7c7d0808de8a768e464
mined 11 hours 33 mins ago
Execute (0x3593564c)
0xAD8320750275F1f645BCaA56c802FB8c7A554978
 
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
 
Uniswap V2
0.064477625188020381 WETH0.064494 ETH13.63 VEF
0xAD8320750275F1f645BCaA56c802FB8c7A554978
 
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
150 USDC0.071100 ETH15.03 VEF
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
Uniswap V2
0 WETH0.000000 ETH0.00 VEF
Uniswap V2
 
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
1525659174.812230611382292843 XEN0.064845 ETH13.71 VEF
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
3814147.937030576528455732 XEN0.000162 ETH0.03 VEF
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
0xAD8320750275F1f645BCaA56c802FB8c7A554978
1521845026.875200034853837111 XEN0.064683 ETH13.67 VEF
Fee 0.000683055194612913 ETH0.16 VEF0.14 VEF (2.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x0c6f4042baea72e7b5a919facf0a93d1cc322b3f09dbc97ced44110986978963
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
AIOZ Network
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
0x273b90b2cc01AdEB05dF8d09D9E2c0c7EA22250b
14607.80475059 AIOZ2.223016 ETH469.92 VEF
Fee 0.000453065416482963 ETH0.11 VEF0.10 VEF (8.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x46dd8e1ef84a3ca35e81f73a4c8b56c4b5ef6dc1dde3695e710600642dfa7590
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
Blur
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
0xC4600a4175f17Dc7c458e961AbE73176209F9ccF
17840.3366 BLUR1.044909 ETH220.88 VEF
Fee 0.000491194467044241 ETH0.11 VEF0.10 VEF (8.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x0711f1924d86439f2228492dedf5ddce0fef8a1cef5636057d66fa510c909f52
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
Tether USD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
0xC6B97955914816E947209fD314c47f09DdF4D037
2520 USDT1.191733 ETH251.92 VEF
Fee 0.000404425872922971 ETH0.09 VEF0.09 VEF (8.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x6327904807d7da92fcb559b694f54c30a5306d06ee5528e650ab0b858d9658a4
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
Tether USD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xdE2fACa4BBC0aca08fF04D387c39B6f6325bf82A
 
0xD1692AB9A438fd1095A2E6b11191E2D7058D90d7
676.71 USDT0.320023 ETH67.65 VEF
Fee 0.000554555719495587 ETH0.13 VEF0.12 VEF (8.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0xef27f5e4183c9e49d239e74becd80b6b73d7ecdce5336e519227b470fc6f2b3c
mined 11 hours 33 mins ago
0xfd9f1e10
0x635C5A713bBD9132617544db8dcDCaE549e6F738
 
0x0000000000000068F116a894984e2DB1123eB395
0 ETH0.00 VEF0.00 VEF
Fee 0.000325837255310034 ETH0.08 VEF0.07 VEF (5.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0x0a66fa2c2810c24d2fd185517b501a4808af2e065e470a7701455e686c13a991
mined 11 hours 33 mins ago
Execute (0x3593564c)
0x2B930738eDBc7192EBdf547c9baFb915e3727EC0
 
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x8cD6C8c449918D92d2ad4658C32F2e2fF1e7096D
 
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
0.034520075379705442 WETH0.034529 ETH7.30 VEF
0x2B930738eDBc7192EBdf547c9baFb915e3727EC0
 
0x8cD6C8c449918D92d2ad4658C32F2e2fF1e7096D
2118492.735868570090599397 WPLS-
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
0.000086300188449263 WETH0.000086 ETH0.02 VEF
Fee 0.000390689677558296 ETH0.09 VEF0.08 VEF (2.773366443 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0xda8b63bd160d72cc70d3173a28cbb6d403a20223630be6485887c779509612a2
mined 11 hours 33 mins ago
Execute (0x3593564c)
0x71Ca6F18e7324723871909B3d927B8e55972E501
 
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
0.002 ETH0.47 VEF0.42 VEF
ERC20 Token Transfers
0x31E8401d5921B0F9d9B280a93cc38f31d72b89b2
 
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
2585.131507592499362191 EEFS-
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
0x31E8401d5921B0F9d9B280a93cc38f31d72b89b2
0.002 WETH0.002001 ETH0.42 VEF
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
6.462828768981248405 EEFS-
0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af
 
0x71Ca6F18e7324723871909B3d927B8e55972E501
2578.668678823518113786 EEFS-
Fee 0.000376878312672156 ETH0.09 VEF0.08 VEF (2.773366443 Gwei/gas)
3457 confirmations0.002 ETH0.47 VEF0.42 VEF
0x57132cd267e95ed182284a4bf0f343b932cf8d5bf989ced4dd9d69d5bf46eb97
mined 11 hours 33 mins ago
Transfer (0xa9059cbb)
0x7e924dB35a53283C391C521eacB9c8295D929fd2
 
Tether USD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x7e924dB35a53283C391C521eacB9c8295D929fd2
 
0x07CDf7DFccbC26F2C12c0104931DfF1a061B161C
1665 USDT0.787395 ETH166.45 VEF
Fee 0.000296486124848128 ETH0.07 VEF0.06 VEF (4.690568192 Gwei/gas)
3457 confirmations0 ETH0.00 VEF0.00 VEF
0xab6de4f604fd48c498c4640acbb88fd171c81c98a705052d26f981fc1d575829
mined 11 hours 33 mins ago
0x01a01814
0xFbA0014D3a9DBe8A0cda6AFfd3da7b541a1Ec32f
 
0xEA8cf32e4aC03ACaB2BabB9028Bac5c853e0Ce80
0.000000004112938637 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x1445F32D1A74872bA41f3D8cF4022E9996120b31
 
0xEA8cf32e4aC03ACaB2BabB9028Bac5c853e0Ce80
0.069003659907694592 WETH0.069021 ETH14.59 VEF
0x735a26a57A0A0069dfABd41595A970faF5E1ee8b
 
0x1445F32D1A74872bA41f3D8cF4022E9996120b31
160.374882 USDC0.076018 ETH16.07 VEF
0x51C2841333fbBAb53B7c2c442CC265BF16430d6D
 
SushiSwap LP Token
11256.171091248209261639 ANGLE0.065061 ETH13.75 VEF
0xEA8cf32e4aC03ACaB2BabB9028Bac5c853e0Ce80
 
0x51C2841333fbBAb53B7c2c442CC265BF16430d6D
0.068507487501811712 WETH0.068525 ETH14.49 VEF
SushiSwap LP Token
 
0x735a26a57A0A0069dfABd41595A970faF5E1ee8b
153.69918563297001472 agEUR0.075671 ETH16.00 VEF
Fee 0.000266706244998752 ETH0.06 VEF0.06 VEF (0.773366443 Gwei/gas)
3457 confirmations0.000000004112938637 ETH0.00 VEF0.00 VEF