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: 234
Hash: 3beb8d7cd471e64e05bef3b7afe17af0e6c1b1252523401a6fdaa1fea8797331
Previous block: 42c094760e9331d3f865c6b91b7b476404e0e604d7f8c5587ed9362dd585b8d1
Next block: 4d433cd5a5715e5cdfc18d2d3cbb7ac656c710a62a06df6c42a8683c3184c0a4
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597906
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 39b070cb49b1ab53fa957290167c671e31635d04e778f60d4224ba833395711b
Median time: 1701597905
Difficulty: 4.656542373906925e-10
Confirmations: 2010
Chainwork: 00000000000000000000000000000000000000000000000000000000000001d6
Bits: 207fffff