APE Price: $1.17 (+4.05%)

Transaction Details

Transaction Hash:
0xf1c2de96079e4f742c86c1e552d4a6b626e22ac9e64a25c296fa9ee7131e73d9
Status:
Success
Block:
2118529 9168816 L1 Block Confirmations
Timestamp:
26 days ago (Oct-26-2024 04:44:25 PM +UTC)
Transaction Action:
Sale:10 NFTsFor21.22($24.76)APEviaSeaport
From:
0x80fe625b67027f773413aD05448916276ABa323D
Interacted With (To):
0x0000000000000068F116a894984e2DB1123eB395
Transfer2.009 APEFrom
0x00000000...1123eB395
To
0xCFf99Ee6...C8FF9dDca
Transfer0.041 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.058 APEFrom
0x00000000...1123eB395
To
0x0C06A6Ea...35BCc1130
Transfer0.042 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.058 APEFrom
0x00000000...1123eB395
To
0x0C06A6Ea...35BCc1130
Transfer0.042 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.058 APEFrom
0x00000000...1123eB395
To
0x0C06A6Ea...35BCc1130
Transfer0.042 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.058 APEFrom
0x00000000...1123eB395
To
0x0C06A6Ea...35BCc1130
Transfer0.042 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.0874 APEFrom
0x00000000...1123eB395
To
0xD87a8851...ffC471F44
Transfer0.0426 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.0874 APEFrom
0x00000000...1123eB395
To
0xD87a8851...ffC471F44
Transfer0.0426 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.1266 APEFrom
0x00000000...1123eB395
To
0x38d3abe9...9d6451f24
Transfer0.0434 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.1266 APEFrom
0x00000000...1123eB395
To
0x38d3abe9...9d6451f24
Transfer0.0434 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
Transfer2.1266 APEFrom
0x00000000...1123eB395
To
0x38d3abe9...9d6451f24
Transfer0.0434 APEFrom
0x00000000...1123eB395
To
0x6fA303e7...331E2F27E
ERC-721 Tokens Transferred: 10
Scroll for more
Value:
Apechain LogoApechain LogoApechain Logo21.22 APE $24.76
Transaction Fee:
0.03540331870093 APE
Gas Price Bid:
25.42069 Gwei (0.00000002542069 APE)
Gas Price Paid:
25.42069 Gwei (0.00000002542069 APE)
APE Price:
$1.06 / APE
Gas Limit & Usage by Txn:
1,404,962 | 1,392,697 (99.13%)
Gas Fees:
Base: 25.42069 Gwei
Other Attributes:
Txn Type: 0 (Legacy) Nonce: 327 Position In Block: 2
Input Data:
Private Note:
To access the Private Note feature, you must be Logged In

The contract call From 0x80fe625b...76ABa323D To 0x00000000...1123eB395 produced 20 Internal Transactions

Transaction Receipt Event Logs
17
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x000000000000000000000000cff99ee65e7804b6fba77ef9906b93dc8ff9ddca
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • c34cb6b4c6160049df43363ddbdcd8d27319c8e14c623de78ced917e0e405e7e
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000442
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001be166db19c28000
  • 000000000000000000000000cff99ee65e7804b6fba77ef9906b93dc8ff9ddca
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000091a94863ca8000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
18
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • e5805572d90e3093e37cc28fe718f4f5634d0bfde8ca5927a20142d932794a1b
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000366
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001c8f7c18a3c10000
  • 0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009536c708910000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
19
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • 79406f6e46e7b7e9f9c8d4d1634f9c452295eef819c8fdc7a23f17beeb86991d
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000367
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001c8f7c18a3c10000
  • 0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009536c708910000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
20
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • 66888283c5abc85d4a7e9942bb525031724b990b1a0b7e6cbeb09bce0c597519
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000368
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001c8f7c18a3c10000
  • 0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009536c708910000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
21
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • 3490a450c100e8e38897970aea137fe0ce267a80d7c3292ec160db7e0444c9ce
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000369
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001c8f7c18a3c10000
  • 0000000000000000000000000c06a6ead2fe0ef0c6325dad349ceaa35bcc1130
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009536c708910000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
22
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x000000000000000000000000d87a8851aa1a641585703c8fd40fb78ffc471f44
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • 4efdd250a1867a87c4f034b308f4c9fb792ce9220acc180bebf804842b72867b
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000b14
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001cf7ef3d90268000
  • 000000000000000000000000d87a8851aa1a641585703c8fd40fb78ffc471f44
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009758796b6e8000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
23
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x000000000000000000000000d87a8851aa1a641585703c8fd40fb78ffc471f44
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • 29d38ddc949c8bf6232a39879370f153901a8d062f44bc9d73426c2f50e0aaab
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000b15
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001cf7ef3d90268000
  • 000000000000000000000000d87a8851aa1a641585703c8fd40fb78ffc471f44
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009758796b6e8000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
24
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x00000000000000000000000038d3abe93d8e05c54b66c99864ba8cf9d6451f24
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • 4b3b48f94049032398b63579e13eb4a8035de0d23259f4cf6ca0b1bad2c74a4b
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000b03
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001d83336ecb588000
  • 00000000000000000000000038d3abe93d8e05c54b66c99864ba8cf9d6451f24
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009a3011ef408000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
25
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x00000000000000000000000038d3abe93d8e05c54b66c99864ba8cf9d6451f24
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • c3d344796f925d941a3a8aa2ff70375e35cdd7da224ec394492eee9ec1f1d978
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000b04
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001d83336ecb588000
  • 00000000000000000000000038d3abe93d8e05c54b66c99864ba8cf9d6451f24
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009a3011ef408000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
26
Address
0x0000000000000068f116a894984e2db1123eb395
Topics
  • 0 0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31
  • 1 0x00000000000000000000000038d3abe93d8e05c54b66c99864ba8cf9d6451f24
  • 2 0x000000000000000000000000088d937f241702de1d8379e7667826a3bbcb6da3
Data
  • b491e325a09de550bea48f5c438b5061085e0909ce1b59bc7d0ab778840c61dd
  • 00000000000000000000000080fe625b67027f773413ad05448916276aba323d
  • 0000000000000000000000000000000000000000000000000000000000000080
  • 0000000000000000000000000000000000000000000000000000000000000120
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000006903a95321f6a1d4037f1d8031f57264aaf54dd5
  • 0000000000000000000000000000000000000000000000000000000000000b06
  • 0000000000000000000000000000000000000000000000000000000000000001
  • 0000000000000000000000000000000000000000000000000000000000000002
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000001d83336ecb588000
  • 00000000000000000000000038d3abe93d8e05c54b66c99864ba8cf9d6451f24
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 0000000000000000000000000000000000000000000000000000000000000000
  • 000000000000000000000000000000000000000000000000009a3011ef408000
  • 0000000000000000000000006fa303e72bed54f515a513496f922bc331e2f27e
27
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
28
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
29
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
30
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
31
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
32
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
33
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
34
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
35
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
36
Address
0x6903a95321f6a1d4037f1d8031f57264aaf54dd5
Name

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

Topics
Data
    0x
Poster Fee:
0.00000899892426 APE
Network Fee:
0.03539431977667 APE
L1 Gas Used:
354
L2 Gas Used:
1,392,343 

                

            


            
            

                

                    

                        
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.