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 github.com/pdxrod/blockchain_explorer.

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

Height: 226
Hash: 4e7dcfb227383033afbe6ef122ce7506621342e4e22de68cc0c8db9af8a5bb3d
Previous block: 15e57831afc07c89c60c9e0dce6643e7cbfcbe79c4d8ebed1bb5e3dbf2a9eb25
Next block: 686af128ccd5a16759f9b6a258b244f22447830b3a3acc95082f28d3d0906957
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597905
Stripped size: 218
Size: 218
Nonce: 4
Merkle root: a18f1ac7676ca0c9edce5783e57b890efdd03d1ee3f89d51dc9830babbda4205
Median time: 1701597904
Difficulty: 4.656542373906925e-10
Confirmations: 2018
Chainwork: 00000000000000000000000000000000000000000000000000000000000001c6
Bits: 207fffff