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: 393
Hash: 4b156ea8fbb7add9caf71911397be130122b9ddc4c62f2e1338a5fe8c78af20a
Previous block: 148768d3ce62ca5387ff830bf992f3d0e51626217ba10cd2fe15581f52245c3d
Next block: 0ffcf105781df88b4c85baf2272546f3023334c51afa18a7a78798d68aae3adc
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597933
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 30b3681dc36fa981b463d8d7c45b4ffeeeda07c3165cb9cdac057d57513e163c
Median time: 1701597932
Difficulty: 4.656542373906925e-10
Confirmations: 1851
Chainwork: 0000000000000000000000000000000000000000000000000000000000000314
Bits: 207fffff