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: 542
Hash: 6ba9934c158b8cfc76f6127931e8dc4258f2b733d41ebf0be079f7fce134a1ce
Previous block: 3319162734927b3a67a3edf65efccd4e57c95f03dd19756d4a691b02c7b26e69
Next block: 64750ed45d4cad3683b5293f49dd9adb911e495b08aa193d961a28aeec7757ef
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864234
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: f28402b79020718b776660c8aff765aba29528bc412292eb6c0a79417fa6e7dc
Median time: 1701864233
Difficulty: 4.656542373906925e-10
Confirmations: 1702
Chainwork: 000000000000000000000000000000000000000000000000000000000000043e
Bits: 207fffff