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: 423
Hash: 590bae148bc9257ffde280568e180206f5117ed96803ca41b9ea5f72d299acbc
Previous block: 40fce3c5aeb3d43131bdbeaf12e5c296139fcd21c7fa0f78933f45a263853c3d
Next block: 33f86a0e584dc77d70b3d61e9ab9b13475c59d7ac590bd9967113108a1a96251
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864214
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: 23f6e586df6c9de2457f6880ee2969e50500edbede516fb33990152a9d75bb2a
Median time: 1701864213
Difficulty: 4.656542373906925e-10
Confirmations: 1821
Chainwork: 0000000000000000000000000000000000000000000000000000000000000350
Bits: 207fffff