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: 289
Hash: 41b9434ca7b1830f80a1081a9976674a178b968293d66b926c6a9499ce6c98b2
Previous block: 3d356c973f9c4073d39315441630c20f7a4ce4424080123d7ebaa438134828c3
Next block: 7a9a9b0db31fc791105120b2ed886c03da0ca351c341c7568cd7cb290f5094bf
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597915
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: f1d500c00d7c9fbfe0439c515033c9921d9e25596d10ea579151c63f55eb0d1e
Median time: 1701597915
Difficulty: 4.656542373906925e-10
Confirmations: 1955
Chainwork: 0000000000000000000000000000000000000000000000000000000000000244
Bits: 207fffff