Block

21203661
0x4ece319986555561e09f99a5af6a67e849af07e053ed0624c4def521b538b411
Transactions134
Height21203661
Confirmations1484
Timestamp4 hours 57 mins ago
Size (bytes)61276
Version
Merkle Root
Nonce0x0000000000000000
Bits
Difficulty0x0

Transactions

0x175149e79525ed7ca5498a7c633ef798a4dfc6998ff53a702df744d94b0385a0
mined 4 hours 57 mins ago
Swap Exact Tokens For Tokens (0x38ed1739)
0xA45E4cbCc004F486BF8b52d42E2694574Fb72735
 
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xA45E4cbCc004F486BF8b52d42E2694574Fb72735
 
Uniswap V2
0.881665194406920832 WETH0.881025 ETH272.66 VEF
Uniswap V2
 
0xA45E4cbCc004F486BF8b52d42E2694574Fb72735
176868749.777808199417839348 BRETT0.974724 ETH301.66 VEF
Fee 0.001192302550366074 ETH0.37 VEF0.37 VEF (12.011066622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xd7f3e2d7cdec82257db22bb3708908d2ebe060bb21d8bc37c8ff67e298243d57
mined 4 hours 57 mins ago
0x2f6f8019
0x82b65bE7856b515165F6De71ce12Fad40497Cacf
 
0xe271388c278C0f4A20444Ba1F1d30e902e55Bd7B
0.005 ETH1.57 VEF1.55 VEF
Fee 0.000337486949944956 ETH0.11 VEF0.10 VEF (12.011066622 Gwei/gas)
1484 confirmations0.005 ETH1.57 VEF1.55 VEF
0x64cff4d28dc327f1831c05d80955dd6a8ebd6b8d181cea99d70412f5f55b907a
mined 4 hours 57 mins ago
0x60e06040
0x4F0bbCA025567A764C70E8807fdF7c6c1F36FbE0
 
Unparsed address
0 ETH0.00 VEF0.00 VEF
Fee 0.028790326742333842 ETH9.03 VEF8.91 VEF (11.422416622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x4a29f514c8a496d950ff587fa4d740404cbfb28385c2da299958070545cdc39b
mined 4 hours 57 mins ago
0x59e0554a
0xae2Fc483527B8EF99EB5D9B44875F005ba1FaE13
 
0x1f2F10D1C40777AE1Da742455c65828FF36Df387
0.000003504738658567 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
 
0x1f2F10D1C40777AE1Da742455c65828FF36Df387
183222.965565 USDC59.279960 ETH18345.96 VEF
0x1f2F10D1C40777AE1Da742455c65828FF36Df387
 
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
58.799757498328809472 WETH58.757087 ETH18184.14 VEF
Fee 0.001436948458655392 ETH0.45 VEF0.44 VEF (10.011066622 Gwei/gas)
1484 confirmations0.000003504738658567 ETH0.00 VEF0.00 VEF
0x5ecc706bcd76858f337eb652bb1ff9db20dcb674f46621c8d3effb81b6791b87
mined 4 hours 57 mins ago
0xef63a915
0x1b3D435c29612479d95d737d667853812856e7db
 
0xBC8552339dA68EB65C8b88B414B5854E0E366cFc
1.7 ETH533.45 VEF526.12 VEF
ERC20 Token Transfers
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
 
0xBC8552339dA68EB65C8b88B414B5854E0E366cFc
5269.964487 USDC1.705044 ETH527.68 VEF
0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45
 
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
1.7 WETH1.698766 ETH525.73 VEF
0xBC8552339dA68EB65C8b88B414B5854E0E366cFc
 
0xc4922d64a24675E16e1586e3e3Aa56C06fABe907
5269.944487 USDC1.705038 ETH527.68 VEF
0xc4922d64a24675E16e1586e3e3Aa56C06fABe907
 
0x0000000000000000000000000000000000000000
5269.944487 USDC1.705038 ETH527.68 VEF
Fee 0.0028995804594947 ETH0.91 VEF0.90 VEF (11.422416622 Gwei/gas)
1484 confirmations1.7 ETH533.45 VEF526.12 VEF
0x785b1287d04658020c3f0f2569d188f30b4d4eaa792120892adf07f95869acac
mined 4 hours 57 mins ago
0x5ee0554a
0xae2Fc483527B8EF99EB5D9B44875F005ba1FaE13
 
0x1f2F10D1C40777AE1Da742455c65828FF36Df387
0.000003505052581639 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
 
0x1f2F10D1C40777AE1Da742455c65828FF36Df387
58.805024253515137024 WETH58.762350 ETH18185.77 VEF
0x1f2F10D1C40777AE1Da742455c65828FF36Df387
 
0xE0554a476A092703abdB3Ef35c80e0D76d32939F
183222.958018 USDC59.279957 ETH18345.96 VEF
Fee 0.003831686570920824 ETH1.20 VEF1.19 VEF (23.946095448 Gwei/gas)
1484 confirmations0.000003505052581639 ETH0.00 VEF0.00 VEF
0x5c40ee10705ed8ef3aa202b4900bffbaec6ce048646f6ca9b3d7df898bee3ded
mined 4 hours 57 mins ago
0xdb3e2198
0x7264656d246227a2E1B723521d4D7772F28dA1D6
 
0xE592427A0AEce92De3Edee1F18E0157C05861564
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xd31d41DfFa3589bB0c0183e46a1eed983a5E5978
 
0x7264656d246227a2E1B723521d4D7772F28dA1D6
109547 ATH2.166840 ETH670.59 VEF
0x7264656d246227a2E1B723521d4D7772F28dA1D6
 
0xd31d41DfFa3589bB0c0183e46a1eed983a5E5978
2.136212849203888311 WETH2.134663 ETH660.64 VEF
Fee 0.002286485904640632 ETH0.72 VEF0.71 VEF (20.066046834 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xbd5b3056bfcdc242ec3ec10be33aeace8da2f6a0531f7b3b94960494d20a673a
mined 4 hours 57 mins ago
To AMM (0xe47d166c)
0xe684c7a861310cE2D4cd34daB80a7190C4dF7475
 
0x03f34bE1BF910116595dB1b11E9d1B2cA5D59659
0.0067 ETH2.10 VEF2.07 VEF
ERC20 Token Transfers
0xc7bBeC68d12a0d1830360F8Ec58fA599bA1b0e9b
 
0x4a14347083B80E5216cA31350a2D21702aC3650d
20.965708 USDT0.006785 ETH2.10 VEF
0x4a14347083B80E5216cA31350a2D21702aC3650d
 
0xc7bBeC68d12a0d1830360F8Ec58fA599bA1b0e9b
0.0067 WETH0.006695 ETH2.07 VEF
0x4a14347083B80E5216cA31350a2D21702aC3650d
 
0xe684c7a861310cE2D4cd34daB80a7190C4dF7475
20.919583 USDT0.006770 ETH2.10 VEF
Fee 0.003018984391320612 ETH0.95 VEF0.93 VEF (12.171066622 Gwei/gas)
1484 confirmations0.0067 ETH2.10 VEF2.07 VEF
0x5e8fdb3633a30e6e5fc988f1d54168e41b2a20465609fd86578e0d33849659f1
mined 4 hours 57 mins ago
0x13d79a0b
0x9DFc9Bb0FfF2dc96728D2bb94eaCee6ba3592351
 
0x9008D19f58AAbD9eD0D60971565AA8510560ab41
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
cacti.eth
 
0x9008D19f58AAbD9eD0D60971565AA8510560ab41
207765704.553378605171238752 PEPE1.413846 ETH437.56 VEF
0x9008D19f58AAbD9eD0D60971565AA8510560ab41
 
0x51C72848c68a965f66FA7a88855F9f7784502a7F
207415974.350933155522307936 PEPE1.411466 ETH436.82 VEF
0x51C72848c68a965f66FA7a88855F9f7784502a7F
 
0x9008D19f58AAbD9eD0D60971565AA8510560ab41
4417.489775 USDC1.429235 ETH442.32 VEF
0x9008D19f58AAbD9eD0D60971565AA8510560ab41
 
cacti.eth
4411.649644 USDC1.427345 ETH441.73 VEF
Fee 0.002939144035603266 ETH0.92 VEF0.91 VEF (12.011066622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xd5db607d5fe0318f7ed42159117e127293ed58c856118c17ac6f0bcdbb6d8637
mined 4 hours 57 mins ago
0x736eac0b
0x476365695d478D4E1d82EA4ad9a0c21c641Ac4C0
 
0x1231DEB6f5749EF6cE6943a275A1D3E7486F4EaE
0.16395017 ETH51.45 VEF50.74 VEF
ERC20 Token Transfers
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
 
Uniswap V2
0.16345831949 WETH0.163340 ETH50.55 VEF
Uniswap V2
 
0x1231DEB6f5749EF6cE6943a275A1D3E7486F4EaE
511.021069 USDC0.165336 ETH51.17 VEF
0x1231DEB6f5749EF6cE6943a275A1D3E7486F4EaE
 
0x476365695d478D4E1d82EA4ad9a0c21c641Ac4C0
511.021069 USDC0.165336 ETH51.17 VEF
Fee 0.002485321196449494 ETH0.78 VEF0.77 VEF (12.311066622 Gwei/gas)
1484 confirmations0.16395017 ETH51.45 VEF50.74 VEF
0x5b7015f0b92e5ac43cd2a97d7ca6f2869e6fad1d19d184401d11e44c5f53c7d8
mined 4 hours 57 mins ago
0xf7c7724f
0x72f500Dd404593C6F1889fEEB03519f211ab4cF1
 
0xdf7391A10F4d6D732B1b64a943e8804105dE2e83
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x0000000000000000000000000000000000000000
 
0xdf7391A10F4d6D732B1b64a943e8804105dE2e83
1003.034524345443531131 CHI0.000955 ETH0.30 VEF
0xdf7391A10F4d6D732B1b64a943e8804105dE2e83
 
0x0000000000000000000000000000000000000000
1381.30164419 USC0.453785 ETH140.44 VEF
Fee 0.0027475314897825 ETH0.86 VEF0.85 VEF (12.011066622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xf61712b9fe9ea73e4701d91a6f766d067053ee47980216cf11373a1085bea853
mined 4 hours 57 mins ago
Execute (0x3593564c)
0x583cC4C8eA1Bc3341Bf08c1a97E1C0868006C895
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x583cC4C8eA1Bc3341Bf08c1a97E1C0868006C895
 
zKML
248.79101401776808509 ZKML0.013793 ETH4.27 VEF
0x583cC4C8eA1Bc3341Bf08c1a97E1C0868006C895
 
Uniswap V2
4727.029266337593616722 ZKML0.262066 ETH81.10 VEF
Uniswap V2
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0.231134641717337684 WETH0.230967 ETH71.48 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
0.000577836604293344 WETH0.000577 ETH0.18 VEF
Fee 0.00261091106083371 ETH0.82 VEF0.81 VEF (12.136434067 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xe420c3922b10ea8eda15cfa395b0a047dd2dc98821cba78f8a346ae1baefdc9c
mined 4 hours 57 mins ago
0x0cc13a07
0x92EE453F8d70F3E334EAcF1c2Ba1322154cCe002
 
0xB9Ea61FCec36a01663a0Eba5429092A162398e3e
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xB9Ea61FCec36a01663a0Eba5429092A162398e3e
 
0x97E6740B4F39549B60fcdBFb3e9Ef98F17feCaaA
130.4842 TUBES-
Fee 0.00139903320747411 ETH0.44 VEF0.43 VEF (14.35185531 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x95343787f3cd5e11dd43a8e53892c4e80c778b065daae231b9b7b2e4f88a88c6
mined 4 hours 57 mins ago
Execute (0x3593564c)
0x205E6E0e71a2cdcd471b6A7727E83Da601C7C326
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0.2 ETH62.76 VEF61.90 VEF
ERC20 Token Transfers
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
Uniswap V2
0.2 WETH0.199855 ETH61.85 VEF
Uniswap V2
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
1053024297.280215383 BADCAT0.200742 ETH62.13 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
2632560.743200538 BADCAT0.000502 ETH0.16 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x205E6E0e71a2cdcd471b6A7727E83Da601C7C326
1050391736.537014845 BADCAT0.200240 ETH61.97 VEF
Fee 0.002276314786700616 ETH0.71 VEF0.70 VEF (12.150324996 Gwei/gas)
1484 confirmations0.2 ETH62.76 VEF61.90 VEF
0x4453cd079ee8c0f4c4ba64383a5cb70ae10eec94636e239ee5ec3bb888cd4f1b
mined 4 hours 57 mins ago
Execute (0x3593564c)
0x9510b1C7aa46804C6A59Bd2D8b9c121E5D13f18f
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x9510b1C7aa46804C6A59Bd2D8b9c121E5D13f18f
 
Uniswap V2
150000.626071909 BLOOD0.028645 ETH8.87 VEF
Uniswap V2
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0.028771683340270323 WETH0.028751 ETH8.90 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
0.000071929208350675 WETH0.000072 ETH0.02 VEF
Fee 0.002272317329776932 ETH0.71 VEF0.70 VEF (12.150324996 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xcb6c82cee44e7c434c19f5bc283c3b4afd93f93c010793f012615fb63c52719e
mined 4 hours 57 mins ago
0x2a0aad11
0xf4b4e6fCD0CFb6E3d70821c136b9c5aA0E0936f2
 
0x7176f0F071379FeE51668Eb6387ddA9129E5CA6B
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0x44ad0dC86c402cFb289F8E3D4E74bc7fed370D5A
 
0x32FF66ba0B19b378E80C251e1F7D811f0690518D
21794.369999999 MMA0.046858 ETH14.50 VEF
0x7176f0F071379FeE51668Eb6387ddA9129E5CA6B
 
0x44ad0dC86c402cFb289F8E3D4E74bc7fed370D5A
0.046682711607362288 WETH0.046649 ETH14.44 VEF
Fee 0.001624456305030944 ETH0.51 VEF0.50 VEF (12.749633512 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x33fae6f3c558df26ee84bbf8e9c8fe8ec38ddf46602933b61f1342c26928ae3c
mined 4 hours 57 mins ago
Execute (0x3593564c)
0xf6a17299805106C1b4C5fFABe4ec548B3D07De65
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0.009 ETH2.82 VEF2.79 VEF
ERC20 Token Transfers
0x2B40201999d7bb40Def18EdE799966771CCcFc3B
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
311.509531449716608278 VAI0.008947 ETH2.77 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x2B40201999d7bb40Def18EdE799966771CCcFc3B
0.009 WETH0.008993 ETH2.78 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x000000fee13a103A10D593b9AE06b3e05F2E7E1c
0.77877382862429152 VAI0.000022 ETH0.01 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0xf6a17299805106C1b4C5fFABe4ec548B3D07De65
310.730757621092316758 VAI0.008924 ETH2.76 VEF
Fee 0.001887868896578496 ETH0.59 VEF0.58 VEF (12.150324996 Gwei/gas)
1484 confirmations0.009 ETH2.82 VEF2.79 VEF
0x747e6e8aae7da12d4cbc88bafd3372c6d2f702d83c9e4980cca2281471d2a21a
mined 4 hours 57 mins ago
Failed
Swap Exact Tokens For Tokens (0x38ed1739)
0xa568BD1F7038bdea2fCA05881168eEF8FD4fFa33
 
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
0 ETH0.00 VEF0.00 VEF
Fee 0.000634510900450376 ETH0.20 VEF0.20 VEF (20.011066622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xc225595aaaa0c27d7f38019d2439b5b0ab5061b6425cf5a3023e00979755fc73
mined 4 hours 57 mins ago
0xd346cbd9
0xaEd185eC781d0b3d801C14Dc2c82e383893c37Cb
 
0x5954aB967Bc958940b7EB73ee84797Dc8a2AFbb9
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xaEd185eC781d0b3d801C14Dc2c82e383893c37Cb
 
0x5954aB967Bc958940b7EB73ee84797Dc8a2AFbb9
856 APE0.303486 ETH93.92 VEF
Fee 0.00192376340747724 ETH0.60 VEF0.60 VEF (11.422416622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x01b84dba4101bfe2a717cdc3050a23f51fc59e16bd7fbfb3054f10f92489c4f7
mined 4 hours 57 mins ago
Approve (0x095ea7b3)
0xaC34d1dC3994D806EB2a8Ed869Fa3B16e626FfDd
 
Trump Pronouns
0 ETH0.00 VEF0.00 VEF
Fee 0.00071977294862889 ETH0.23 VEF0.22 VEF (14.845270674 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xfd4380d346b6f8943a597a239897d8eef39a7434c65863772152ec76dafbaa75
mined 4 hours 57 mins ago
Approve (0x095ea7b3)
0xDF045FED2f0EaEBf53a91656939BCd39a3187612
 
Trump Pronouns
0 ETH0.00 VEF0.00 VEF
Fee 0.00071977294862889 ETH0.23 VEF0.22 VEF (14.845270674 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0xcf5990322204187f65da110bc0ded2336db2ceaf89b23fe704e2cf9ef911e8ad
mined 4 hours 57 mins ago
Approve (0x095ea7b3)
0x3306c0C4b231e5d2e5A413AC6C0C59eD327B49b1
 
TheGreatAmericanDreamCoin
0 ETH0.00 VEF0.00 VEF
Fee 0.000701782375645122 ETH0.22 VEF0.22 VEF (15.011066622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x311e9a8788c7581dfd016c93a188fc72b88b131ea3f216c52f0a0b86a7c261d0
mined 4 hours 57 mins ago
Execute (0x3593564c)
0xfE4e871e8a88D1D4404Ca6C51A59D812cA6a3864
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xfE4e871e8a88D1D4404Ca6C51A59D812cA6a3864
 
0x0000000000000000000000000000000000000000
3619.592286999090559676 PLUG-
0xfE4e871e8a88D1D4404Ca6C51A59D812cA6a3864
 
0xDe737ab7b9DfcB6B1A3b4bab5365517e3cf15e75
14478.369147996362238704 PLUG-
0xfE4e871e8a88D1D4404Ca6C51A59D812cA6a3864
 
Uniswap V2
343861.267264913603169235 PLUG-
Uniswap V2
 
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
504.948206 USDC0.163371 ETH50.56 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0x27213E28D7fDA5c57Fe9e5dD923818DBCcf71c47
1.26237 USDC0.000408 ETH0.13 VEF
0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
 
0xfE4e871e8a88D1D4404Ca6C51A59D812cA6a3864
503.685836 USDC0.162963 ETH50.43 VEF
Fee 0.00225758095687175 ETH0.71 VEF0.70 VEF (12.383742125 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x31f3ed29db84c03a1b53e519016cceefbc1887a1f463871ba6d27ea71a9eb541
mined 4 hours 57 mins ago
Approve (0x095ea7b3)
0x2ccA9858A96c22bF14391d09C55d0A8a668D5074
 
Trump Pronouns
0 ETH0.00 VEF0.00 VEF
Fee 0.00070056409752263 ETH0.22 VEF0.22 VEF (14.449089358 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF
0x42ae3410f94ee03e7dbd8204e35efe29a02471848ef7f047a5e0806f6018f024
mined 4 hours 57 mins ago
Swap Exact Tokens For Tokens Supporting Fee On Transfer Tokens (0x5c11d795)
0xB0Ba33566bd35BcB80738810B2868DC1dDd1f0E9
 
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
0 ETH0.00 VEF0.00 VEF
ERC20 Token Transfers
0xB0Ba33566bd35BcB80738810B2868DC1dDd1f0E9
 
Uniswap V2
0.626282120923574528 WETH0.625828 ETH193.68 VEF
Uniswap V2
 
0xB0Ba33566bd35BcB80738810B2868DC1dDd1f0E9
36862.655952235014875727 NPC0.625559 ETH193.60 VEF
Fee 0.001193948066493288 ETH0.37 VEF0.37 VEF (12.011066622 Gwei/gas)
1484 confirmations0 ETH0.00 VEF0.00 VEF