Ape Curtis Testnet

Address

0x661601080B3d9be7B4d776D777aaACb2eB7a0929

Overview

APE Balance

Ape Curtis LogoApe Curtis LogoApe Curtis Logo2.32142673574623811 APE

Token Holdings

More Info

Transactions Sent

Latest: 31 hrs ago First: 188 days ago

Multichain Info

No addresses found

 Latest 25 from a total of 252 transactions

Transaction Hash
Method
Block
From
To
0x6414177dd5da21a82d28bc84f0eb16a904f3f7e1b88f6a5b1005d1fde14d9eb6
0x60806040153206582025-02-02 20:31:2731 hrs ago1738528287
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xe2a2d294060af110f293838b7c7edea744e79ea6f0784fba92973e05c9d1cf4d
0x60806040152843772025-02-01 12:33:532 days ago1738413233
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xf8368b271b1920bd637c1f87e60423afd50c2ada208d9d7349d0b22b6f349898
0x60806040151243682025-01-27 14:50:377 days ago1737989437
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x9eaa015da7672196109c5e3ca9f43eb48b444bef3e256e383c65e29ef8f99419
0x60806040150879982025-01-26 15:55:378 days ago1737906937
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xa2c4a73c61883bae6fce7c8b278e23448f8e7faf3081f6288733f5c7c9ca566e
0x60806040150724592025-01-26 3:47:099 days ago1737863229
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x710bcd2410d34b881a3d1c95dc655c096b97acd41e9b336bed72bc71d41c7ddb
0x60806040149975762025-01-24 17:00:4810 days ago1737738048
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x82fb174d166ec87dccffd7362dd67e8cd2bc6e1e50a1ba1de9215c0d4fa0fffd
0x60806040149796452025-01-24 9:24:0610 days ago1737710646
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x396b4b4b055dc533ffd8cabc07a036eb12e3dd5d7d34cbfd4e7bc2fdd0611eb1
0x60806040149337322025-01-23 1:57:2912 days ago1737597449
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xc732e3d174803685e827c3e259b03ba8568b5ac3edea120de27656b647ac492c
0x60806040148294762025-01-21 4:24:2613 days ago1737433466
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x02b548258821c9243c7094e6353a60035cf40de0b2d4fb2fd09df203bbe00f23
0x60806040147463142025-01-18 17:16:1416 days ago1737220574
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xe3354a10511fd02823619aa1345cdd8d745b06ccb6d4c9ee301a6c728e113937
0x60806040147042882025-01-17 15:41:3117 days ago1737128491
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x5ee6b3e99ec6e069d08ef7bf204e099a64d1846a6a12773e11bbd9fdc8a4c092
0x60806040145819352025-01-14 18:22:4520 days ago1736878965
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xf60f82a50a3f590342e19f43936f127cd51d3246d84b4c73d938134f49fda951
0x60806040145682912025-01-13 23:17:5221 days ago1736810272
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xffe1ad1402a04efd719cc68438ed86df633f271f11a55708c2828f9521afd5c0
0x60806040145660712025-01-13 18:29:0921 days ago1736792949
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x5c6f85857a44ac4ebf1ac54be852a71a6a988bc66029baeef2701e9435549d9e
0x60806040142778682025-01-01 3:38:2834 days ago1735702708
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x15aae512a970e02a1af789c82a2263c918b0402e0e54773ee7e9b952371c8de2
0x60806040141816402024-12-26 4:23:3239 days ago1735187012
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xf448d1d6e53c5262a01a66c6262004b9960bf72fbb3e80e067c781daa417694f
0x60806040141537412024-12-24 11:55:5141 days ago1735041351
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xe6bb1995ac908aad9d3363982b2e8c0de0364bc12abb76270b1b2a790dac8b18
0x60806040141272162024-12-23 2:28:5643 days ago1734920936
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xaefbc840d96b35b645519b6b5a04e95e127a341af1b7029685a6fa1239a84d8f
0x60806040137003262024-12-10 0:02:4856 days ago1733788968
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x1d91af955282dc8c84501200ad354d0b814d6ada10d042e2c7c8d99a64224faf
0x60806040136549722024-12-08 16:45:5657 days ago1733676356
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xe1e12078927fa739096625305db6e7b0f9a41507ec3a6659eafd2beb6c08fbe7
0x60806040135867072024-12-06 15:20:2359 days ago1733498423
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0x669a0ddac9aba14217bc8ab8240b27c1bbfe7180698db4ccc3b7e932542f33f1
0x60806040134535572024-12-02 13:09:5163 days ago1733144991
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000003440.01
0xc06f3e2b2b266bbf54f9ea7cdc7df62eeaeeaee1cb93aaeace9615a71060f0a7
0x60806040131558112024-11-28 0:34:0268 days ago1732754042
0x66160108...2eB7a0929
OUT
 Contract Creation
0 APE0.000001230.01
0x684dc43d57629aa6bb459af46709b2ce11aa99971cf460a2498449cd41d7d488
0x219f2fe7127751802024-11-21 8:46:0374 days ago1732178763
0x66160108...2eB7a0929
OUT
0xb8faCa77...5Ef4a94bc
0.0132 APE0.000001460.01
0x3ed70d3f2372405d2b68123480208cdaaed6616ef2af2d3bd6f513b5b133c798
0x219f2fe7127751512024-11-21 8:45:3174 days ago1732178731
0x66160108...2eB7a0929
OUT
0xb8faCa77...5Ef4a94bc
0.0191 APE0.000001460.01
View all transactions

Latest 25 internal transactions (View All)

Parent Transaction Hash Block From To
0xaa259e5e70ade3ae9910bee3fd893d5a9d8b1aa1799e49935d5d5a05d823bc80
124763422024-11-18 7:53:4377 days ago1731916423
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0106 APE
0xc89616787ede4627ac55ed71c7bcd2d55f67fd9765228f44f38b75f63a64293a
124763172024-11-18 7:53:0777 days ago1731916387
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0153 APE
0xfb6a8602a0e695a541d82c56aafc321439bd10b6b02a76b44dce7f5cc2683bfd
124762812024-11-18 7:52:3277 days ago1731916352
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0191 APE
0xab5a96a69870f424823b4201786adbfb2b49d0b16892dc3f460e68f27101603c
124762502024-11-18 7:51:5677 days ago1731916316
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0178 APE
0x74ec02db5e72713a72cefbb14a1ec39f4868308ec10d7616944cb984c1194597
124762192024-11-18 7:51:2177 days ago1731916281
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0135 APE
0xddf3f7e47d9f0bc6960342641a962195e2c361f53e0fd5321e977cf50f2a3d80
124761942024-11-18 7:50:4577 days ago1731916245
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0152 APE
0x29732396c09c49dfd9ac83a400cc3a0b4d671ee44911ec4308ddf47c91099b09
124761672024-11-18 7:50:0977 days ago1731916209
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0102 APE
0xf0da5899b0d2a2ae790441b97524ee800200a1b24a676f277a4b47a955a51a18
101904632024-10-16 17:54:48110 days ago1729101288
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0162 APE
0x4655fb1c602c03da661122363cc2feee540a9440cf4a5b47d13f4a2f59560a4f
101904332024-10-16 17:54:13110 days ago1729101253
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0118 APE
0x0c35cc346bce49a40ecc7715850bc699e557710fecc7814d6930f1b42b2f0d93
101904012024-10-16 17:53:37110 days ago1729101217
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0161 APE
0xd65e345be64bc73d2be27275fd2a738eee1142548ee5491fcef0571701af8e19
101903722024-10-16 17:53:02110 days ago1729101182
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0111 APE
0x58da1d28d13ff413bd5aef027314dbb70df5975361f3af5d997a31a2fd7bf031
101903432024-10-16 17:52:26110 days ago1729101146
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0166 APE
0x687479742936f92edd0153a7a583a59a3f248d3a14ee7d00cfcbbb6debe7982c
101903062024-10-16 17:51:48110 days ago1729101108
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0134 APE
0xbca63e048e75ed246897e19d5addfb60f57409767d858dc21fbd41a41e729b49
101902692024-10-16 17:51:12110 days ago1729101072
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0118 APE
0x0a40f2b4d2044d8bcbb8cd4b713d73717f93f069fa69fc4e2db00a2779333511
101902342024-10-16 17:50:36110 days ago1729101036
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.017 APE
0xc6425a2e7cc7079567452a9afb39758f77603b15d3fdfb777f9f4a7aa44d9665
101902022024-10-16 17:50:00110 days ago1729101000
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0127 APE
0xbc2ae5517d191acd30757a67558091ee201269bb3cdc4a20e6312c5056463526
101901652024-10-16 17:49:24110 days ago1729100964
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0163 APE
0x73e65bd8dec57dfda490d27dc2dbce2f4a95a29555c7fc0d1c159bc2611630e0
101822382024-10-16 15:20:35110 days ago1729092035
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0146 APE
0x060952f32134b06d920ac38547cf2bc6fed1d2d7f1fc2970a693fd6fdbf71172
101822072024-10-16 15:19:58110 days ago1729091998
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0189 APE
0x820b313643747a31969e51eca7f4a98dcd48ff7fcd2ca864b1045dfdf5f5e408
101821862024-10-16 15:19:23110 days ago1729091963
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0131 APE
0xf5bdf83f987a8926526fe39a86b97de2d52510d3edb29645ed59e92c0a59eb4d
101821612024-10-16 15:18:47110 days ago1729091927
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0181 APE
0x07b1c88f1c0904f3a084591fb455d4a78c91b7e2388e5198aff8d44a4a6a37bd
101821392024-10-16 15:18:12110 days ago1729091892
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0107 APE
0x3e0973b83e5bbbe5a479a3237f5295633be8fa646527c5dea4dfb55ee24b0cef
101820282024-10-16 15:15:44110 days ago1729091744
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0114 APE
0x906b1c9c195a32ec15ef29e3b257f9a01ab239bf9832505e74d0e2033327463f
101820062024-10-16 15:15:08110 days ago1729091708
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0114 APE
0x4d97a99eb31076f8188b684be54c2012d1c5a525a8851fbd8eeaba0e70bda65c
101819782024-10-16 15:14:32110 days ago1729091672
0xb8faCa77...5Ef4a94bc
0x66160108...2eB7a0929
0.0191 APE
View All Internal Transactions

Latest 14 Deposits

L2 Txn Hash L1 Deposit Txn Value Token
0x270d052744cf5879eb4d2f3698283a510442ea4d1c0ea3cff7c35af4266e642e2024-10-11 19:48:00115 days ago1728676080
0x0ff6718bf18396a89e5c7b9f94bd3ecf166482247eed825f5c37bf15bd6f90c3
0.01 Sepolia APE (sAPE)
0x0c518e693935d8dade70990ebc61366b49a3328793e5ebbfec52a9871f41f1fe2024-10-11 19:46:43115 days ago1728676003
0x3c92847a3a2366953357d7bbfa57d3335b3f98aeda0fb4b42c1af1c0ccbc693f
0.0101 Sepolia APE (sAPE)
0x47e6694f359762673eed6022f3dd17b2d6c87d3b301023a16c70c095307343a62024-10-11 19:45:27115 days ago1728675927
0x5220ca6f7fdfb23ad841dc398018b4449c9b4c5e4087dbe160c69064ab13f6c4
0.0126 Sepolia APE (sAPE)
0x916a195b24050a98d2278ea77e293326b61a224e10c6eee3215e7747e65e29b02024-10-11 19:44:10115 days ago1728675850
0x519eabd21edb5a276ebf30030b153de2cc25388f092dd9ca39d9d0e6237f61fd
0.015 Sepolia APE (sAPE)
0xdabe7f7912d91b0352c382479c5ed6158a1001b066907cb2f48d2cf1b695ccd72024-10-11 19:42:53115 days ago1728675773
0xedd25c5f317dfdd7abe1857b7eb4bb4f9efedca8bad602c37fe7df13de4429b5
0.0146 Sepolia APE (sAPE)
0x150ba38e8966cb51aad4939e1b41f528978f1c829b59bad1b30e807d2419b35b2024-10-04 15:12:39122 days ago1728054759
0x89631fc37305a633c33e9f74f4770ba0d0612e12a2b248536bbd6a7c38abfcfb
0.011 Sepolia APE (sAPE)
0x0f024a42ab1a2e25a087dc26747ae97bfcc1d3808e58337719c5b6336f5f5ec02024-10-04 15:11:21122 days ago1728054681
0xdc0b60e8d6a92ddedbdffa2cfbb321cfdd694ef2b21e2d493ef928bb5bfa776a
0.0123 Sepolia APE (sAPE)
0x39dae6842dbabf08d4d489593d9e10d063630357afc00fd1fbb982294909b49f2024-10-04 15:10:04122 days ago1728054604
0x67eaccc4e0a1ff1f4031a358fe7e48f09922468d156942653279d433a65f1732
0.0156 Sepolia APE (sAPE)
0x57b8bd8104f8d92459ccd5615c3fd4924c83a8dcd2ab654f9cc214fda2ab492e2024-10-04 15:08:46122 days ago1728054526
0x3eca81dcb7e9603a25b3138abc52f5683f23192c558c63a7893c9e51c6e33023
0.0118 Sepolia APE (sAPE)
0xb8162f11120914be5a0b68717b1d2142dac1616fc64102212558eaace440b2cb2024-09-16 6:45:05140 days ago1726469105
0x72ea7dda3066ef819b5f646dffc964a77e019d5dfd3cffdff8ad736922e0ec34
0.0118 Sepolia APE (sAPE)
0x7dc2fd276f624c9a695226be95d420f672f46348f0befd9b4d849033a2fc6afa2024-09-16 6:43:49140 days ago1726469029
0x16088c73c464c86ada9955dcfe6f393092fda424859b4cb530408266eb8da801
0.016 Sepolia APE (sAPE)
0xe64b892b79e67ae2b36ff4c5061c6c2a7e67e22e62b2f9bed33a01bc9bb726942024-09-16 6:42:32140 days ago1726468952
0x8cf2fc39849bb5a760abc72fdf6502b6b66e80b47dd468c16a4cc59fc6ae5b6d
0.0184 Sepolia APE (sAPE)
0xa8dfbc7194cb4b738b3388d499399a4fdf9e6dcb42733cf6278791248f15fd152024-09-01 23:18:54155 days ago1725232734
0x31a3b38eba26ebf65900bf14b4ef9ad74cb80ce468e680003acf3b037dc7c41b
0.0192 Sepolia APE (sAPE)
0x1a3ad96c59324ec56be21a7b8e8500e81e6fc68672da2e3e5090b5dd53a36a0f2024-09-01 23:17:38155 days ago1725232658
0x9920fbfee440dd594b572759da890f46bbdaf4724cc9a9973f694aa3d9182096
0.0105 Sepolia APE (sAPE)

Latest 25 Withdrawals

L2 Txn Hash Value Token Status L1 Withdrawal Txn
0xe94f045126713f8528660faa3929e0ec5c8a40a3a7b4f087a8678d578b8dfd012024-10-01 8:49:18125 days ago17277725580.0189 Sepolia APE (sAPE)Waitingn/a
0xcc57b3872c6e14925457c3acad7cd20f2ebaaf5ccddb461d64f7dfb7836901772024-08-21 21:09:37166 days ago17242745770.0116 Sepolia APE (sAPE)Waitingn/a
0xa3317b90a4a9a16f0b4d39cb57d9cad6a5517e7ab4d11d83b43e2674bb989aaa2024-08-21 21:09:03166 days ago17242745430.0197 Sepolia APE (sAPE)Waitingn/a
0xa9c160047a2b41ba146aa930d435e994e2219aba2a398a00ce113159174156822024-08-21 21:08:29166 days ago17242745090.0108 Sepolia APE (sAPE)Waitingn/a
0x9255e911cf979047b62208f951ff394a12f634793b8eecc37c77e7ed6bbb72a02024-08-21 21:07:56166 days ago17242744760.0186 Sepolia APE (sAPE)Waitingn/a
0x99ece7f1ee48c449332a509babb2f3ebd7506495cb3c524b25efc21650a9650b2024-08-17 0:55:54171 days ago17238561540.0157 Sepolia APE (sAPE)Waitingn/a
0x1f1a8dea3f7fda7ae3640a7802a40ae329ec0e4e601f717592eda57ce9e895af2024-08-17 0:55:20171 days ago17238561200.0159 Sepolia APE (sAPE)Waitingn/a
0x264cae880c2569cbff7ab5e31a4ff4f3765ccd3863b42467417300ec818f511f2024-08-17 0:54:46171 days ago17238560860.0173 Sepolia APE (sAPE)Waitingn/a
0x1fb62c8c4c14fd339072874448b63bdeb662318afc8b61a2377321ca74483df02024-08-17 0:54:12171 days ago17238560520.0152 Sepolia APE (sAPE)Waitingn/a
0x14f5effe6e91fdd7dd227b4c0ad665b2327a206aa75f87e97269a1edbe6b2aa92024-08-17 0:53:38171 days ago17238560180.0123 Sepolia APE (sAPE)Waitingn/a
0xb0343daa1b8abdbe05ef41c756c5266d9cdbf3a077addb2fef6c097743c0cd8f2024-08-17 0:53:03171 days ago17238559830.0117 Sepolia APE (sAPE)Waitingn/a
0x28509ffadb581df6249e77b4c1cdf211c32a5a691a3f1f7a82f4833aa3dbd0502024-08-15 14:12:24172 days ago17237311440.0195 Sepolia APE (sAPE)Waitingn/a
0xaf375e2e360a6e8f608c242cb5f2d9f27ead0649d4153b704e3d683f8fe722e62024-08-15 14:11:49172 days ago17237311090.0151 Sepolia APE (sAPE)Waitingn/a
0x496ba1d5c180e47c9dcc2db5df3912b27de82d0cb9d7bef53b3fbf0af70b13082024-08-15 14:11:15172 days ago17237310750.0194 Sepolia APE (sAPE)Waitingn/a
0xc0caaf042c609ac0bf71a6d0b19b3ec5a38e66dc73fb213cd74b4fc0b30dcec62024-08-15 14:10:41172 days ago17237310410.0149 Sepolia APE (sAPE)Waitingn/a
0x6f0df254211dff3a949eb1aaaeb4f9bb23a6cef8fd6425ef9acb8a9b1b36e0552024-08-15 14:10:07172 days ago17237310070.0179 Sepolia APE (sAPE)Waitingn/a
0x861fcf4aa5b1f21b78ad63a5e5e5ea53cc887e7a5ef1a76d61aab0b99399fcea2024-08-12 4:59:46175 days ago17234387860.0185 Sepolia APE (sAPE)Waitingn/a
0x34dcd82dff172c23cd2721209efef86b2e1913db9f17c89790ff6c031c28f5072024-08-12 4:59:12175 days ago17234387520.018 Sepolia APE (sAPE)Waitingn/a
0x74e97763ed287f455926b3c636410c8894236af8026a93e25368ddeb0452b8fb2024-08-12 4:58:38175 days ago17234387180.0105 Sepolia APE (sAPE)Waitingn/a
0x0952076e319e9da5ecc39d18f828d39a8b18c9af9f971a03614e543102326df02024-08-12 4:57:59175 days ago17234386790.0147 Sepolia APE (sAPE)Waitingn/a
0x83eb328b10bef0fb27fb60c20ba691af73e2f651eb9750481430b6d32f5393262024-08-12 4:57:25175 days ago17234386450.0196 Sepolia APE (sAPE)Waitingn/a
0x6f41a99e3724f7a05a9e539fda7f58790ba126fa2e70d87ffa575a98eaa5db922024-08-11 12:40:27176 days ago17233800270.0184 Sepolia APE (sAPE)Waitingn/a
0xe73f5867a588e3e6eaa45c81afe50738c27edd16780fde765c0a077b79a072b62024-08-11 12:39:53176 days ago17233799930.0178 Sepolia APE (sAPE)Waitingn/a
0xc2cc2594c7d2d53007e8a8133f13d638c04c82eab6974be699223a850c7e08322024-08-11 12:39:18176 days ago17233799580.0156 Sepolia APE (sAPE)Waitingn/a
0x07212811f1ce10046945fb568d87deec7c790c21cad55480d3122679688ca2772024-08-11 12:38:44176 days ago17233799240.0188 Sepolia APE (sAPE)Waitingn/a
View All Withdrawals
Loading

Contract Name:
0 APE
Compiler Version
0
Optimization Enabled:
0 APE
Other Settings:
-NA-

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
[ Download: CSV Export  ]
[ Download: CSV Export  ]
[ Download: CSV Export  ]
[ Download: CSV Export  ]

A wallet address is a publicly available address that allows its owner to receive funds from another party. To access the funds in an address, you must have its private key. Learn more about addresses in our Knowledge Base.