ETH Price: $3,875.66 (-1.41%)
Gas: 9.79 Gwei

Transaction Details

Transaction Hash:
0xca4f7b9ee220f8d3ba6b129a3e846e0189ba6d0fa0f6800c63ac1d4dfb0cb4f9
Status:
Success
Block:
164127974987982 Block Confirmations
Timestamp:
698 days ago (Jan-15-2023 02:28:23 PM UTC)

Transaction Action:
Sale:9 NFTsFor0.20229($784.01)ETHOnOpenSeaviaSeaport

Sponsored:

Interacted With (To):
Transfer0.00505725 ETHFrom
Seaport 1.1
To
OpenSea: Fees 3
Transfer0.01517175 ETHFrom
Seaport 1.1
To
0xF2ab0696...6F698cF22
Transfer0.01791 ETHFrom
Seaport 1.1
To
0x6A24Cbbd...85eAC6576
Transfer0.018 ETHFrom
Seaport 1.1
To
0xBaD39A2B...eD6c37667
Transfer0.0396 ETHFrom
Seaport 1.1
To
0x78537337...837b91b6D
Transfer0.0198 ETHFrom
Seaport 1.1
To
ENS Namefeagel.eth
Transfer0.02025 ETHFrom
Seaport 1.1
To
0xCa1d7494...6DFeBDfB0
Transfer0.021591 ETHFrom
Seaport 1.1
To
0xd7E31014...1E81C80Bc
Transfer0.02241 ETHFrom
Seaport 1.1
To
0x7F895dde...3691d0a32
Transfer0.0225 ETHFrom
Seaport 1.1
To
0x80d5cDE1...BBD02EA2D
Transfer0.0198 ETHFrom
Seaport 1.1
To
0x24476341...5b1b99956


Value:
0.22209 ETH $860.74
Transaction Fee:
0.014015262903488847 ETH $54.32
Gas Price:
14.509860519 Gwei (0.000000014509860519 ETH)
Ether Price:
$1,552.71 / ETH
Gas Limit & Usage by Txn:
1,389,128 | 965,913 (69.53%)
Gas Fees:
Base: 13.009860519 Gwei |Max: 19.559792761 Gwei |Max Priority: 1.5 Gwei
Burnt & Txn Savings Fees:
🔥 Burnt: 0.012566393403488847 ETH ($48.70)💸 Txn Savings: 0.004877795201666946 ETH ($18.90)

Other Attributes:
Txn Type: 2 (EIP-1559) Nonce: 894 Position In Block: 66
Input Data:

Private Note:
To access the Private Note feature, you must be Logged In

The contract call From 0x24476341...5b1b99956 To 0x00000000...169EdE581 produced 11 Internal Transactions

ADVANCED MODE:
Type Trace Address From   To Value Gas Limit
call_0_1Seaport 1.1 OpenSea: Fees 30.00505725 ETH679,518
call_0_1Seaport 1.1 0xF2ab0696...6F698cF220.01517175 ETH669,435
call_0_1Seaport 1.1 0x6A24Cbbd...85eAC65760.01791 ETH657,775
call_0_1Seaport 1.1 0xBaD39A2B...eD6c376670.018 ETH647,776
call_0_1Seaport 1.1 0x78537337...837b91b6D0.0396 ETH637,777
call_0_1Seaport 1.1ENS Namefeagel.eth0.0198 ETH627,777
call_0_1Seaport 1.1 0xCa1d7494...6DFeBDfB00.02025 ETH617,778
call_0_1Seaport 1.1 0xd7E31014...1E81C80Bc0.021591 ETH607,779
call_0_1Seaport 1.1 0x7F895dde...3691d0a320.02241 ETH597,779
call_0_1Seaport 1.1 0x80d5cDE1...BBD02EA2D0.0225 ETH587,780
call_0_1Seaport 1.10x24476341...5b1b999560.0198 ETH394,461
Transaction Receipt Event Logs
119
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 335923c246c889d9ac93871e1e81c2e67cafd26e1e019c8672a47a72a8e58f8d
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 0000000000000000000000000000000000000000000000000000000000000788
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000003fa10cd3ed6000
  • 0000000000000000000000006a24cbbd0f078d9f86451729cab237a85eac6576
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000001c4793ec69800
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 00000000000000000000000000000000000000000000000000054d6bbc53c800
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

120
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 05703a23f9fefbf4f1e620f8d4955abef8c2772f23b9f22ea6b7ac2067970431
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 0000000000000000000000000000000000000000000000000000000000001056
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000003ff2e795f50000
  • 000000000000000000000000bad39a2bfe5bbea994dde624fa5d9a2ed6c37667
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000001c6bf52634000
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000005543df729c000
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

121
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 0ad83c0e9d5a39ed2b0d1b1772ae45700737766bdff906da6c56e24afa64551e
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 00000000000000000000000000000000000000000000000000000000000013ae
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000043c928ae508000
  • 0000000000000000000000007853733783cdf02ea63a17c792ea9d0837b91b6d
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000001e2083dbb2000
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000005a618b9316000
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

122
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 14eae68124ab60444ae5cafd0af4d66138746e29512d273c40a28d58db6ceb8f
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 000000000000000000000000000000000000000000000000000000000000178a
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000004657febe8d8000
  • 00000000000000000000000023199546f11f1c6ccbb8450e0cc35e65b15b88bd
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000001f438daa06000
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000005dcaa8fe12000
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

123
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 487112beb3898877774bde2032b88f14b44960af9760ff3617f2807304203f49
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 000000000000000000000000000000000000000000000000000000000000207a
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000047f14488b3a000
  • 000000000000000000000000ca1d749457109cfc162dd4fdab7e1956dfebdfb0
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000001ff973cafa800
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000005fec5b60ef800
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

124
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • c7e29697897d8a02006b6415fffd00d7f05642ead087440486718e8d37d21f60
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 0000000000000000000000000000000000000000000000000000000000000e51
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000048e6d4ceca8000
  • 0000000000000000000000007853733783cdf02ea63a17c792ea9d0837b91b6d
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000000206697785a000
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000006133c6690e000
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

125
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 2999e7593231d95c9201575f0bb5115eacf3c556c9bb6dc6b12c595978d84b9d
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 0000000000000000000000000000000000000000000000000000000000001288
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000004cb4e66d587000
  • 000000000000000000000000d7e3101489d6e9a02848c50cc132c111e81c80bc
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000000221782db43c00
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 00000000000000000000000000000000000000000000000000066468891cb400
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

126
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • 55300342954cf4452ca730c683b322bd529cf6df8060aa1b8fb358d36b6154b4
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 00000000000000000000000000000000000000000000000000000000000020eb
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000004f9dc6b96aa000
  • 0000000000000000000000007f895ddea22e10122bd639d1e18c0fa3691d0a32
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 00000000000000000000000000000000000000000000000000023629135f6800
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000006a27b3a1e3800
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

127
Address
0x00000000006c3852cbef3e08e8df289169ede581 (Seaport 1.1
Name

OrderFulfilled (bytes32 orderHash, index_topic_1 address offerer, index_topic_2 address zone, address recipient, tuple[] offer, tuple[] consideration)View Source

Topics
Data
  • e53bc87167a3a8379977244bafd7aad60b488efce6bd8b62a9a8099c5b44ac58
  • 00000000000000000000000024476341a2a33c12fdb84b100102ae55b1b99956
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 00000000000000000000000049adcc97404c197190a5866885018c558006974a
  • 0000000000000000000000000000000000000000000000000000000000000376
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000003
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000004fefa17b724000
  • 00000000000000000000000080d5cde107274825fa70057fb0db444bbd02ea2d
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000002386f26fc1000
  • 0000000000000000000000000000a26b00c1f0df003000390027140000faa719
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000006a94d74f43000
  • 000000000000000000000000f2ab069635d0905e143f3e0672aa5c46f698cf22

128
Address
0xf2ab069635d0905e143f3e0672aa5c46f698cf22
Name

PaymentReceived (address from, uint256 amount)View Source

Topics
  • 0 0x6ef95f06320e7a25a04a175ca677b7052bdd97131872c2192525a629f51be770
Data
  • from :0x00000000006c3852cbEf3e08E8dF289169EdE581
  • amount :15171750000000000

129
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

130
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

131
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

132
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

133
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

134
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

135
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

136
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

137
Address
0x49adcc97404c197190a5866885018c558006974a (Lumens: LUMEN Token
Name

Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source

Topics
Data
    0x

                
Loading...
Loading
Loading...
Loading
Loading...
Loading

A transaction is a cryptographically signed instruction that changes the blockchain state. Block explorers track the details of all transactions in the network. Learn more about transactions in our Knowledge Base.