The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mupBAc74k

Height: 1583
Hash: 0682d7490b97f782958d1a39486cceff71275b18eae22387dfa530f74fe1eb1f
Previous block: 5a6488aa90b4bc065132ea54e4d66d4ea60c3830fc2bbf0f87c5e4e09f65babf
Next block: 1e4c5f96a9a356724700b672c67f4f139b595f47d7d9025a4c2eed8377bdab0a
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932133
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a8409a5373014358b6af055bf9166aacb271af7fbbe60a4c8bbef94cf43f0692
Median time: 1708932132
Difficulty: 4.656542373906925e-10
Confirmations: 26
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c60
Bits: 207fffff