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: 337
Hash: 3b091a43371b33dffb9db28ae139305b61e7d3b6e80db5757f6d691a4444c73a
Previous block: 291965b381599c561078bc4ba7100026cd186a9c2af34680795cc3132ca2e49f
Next block: 5a80b3e362d930aa47189e89143cc24601089573aaa4fdfa5a8a3832990d9038
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597923
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 1e4ddf5df2ec251c136a3cb551e3615e022f34fbaecec78b789cf067570a8429
Median time: 1701597923
Difficulty: 4.656542373906925e-10
Confirmations: 1907
Chainwork: 00000000000000000000000000000000000000000000000000000000000002a4
Bits: 207fffff