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: 2153
Hash: 605ff98a815396fbf40ead4e2a322c4d94800903a033a5ec0ba75a5286ae1860
Previous block: 63493e1f1a8796db4a500fd2c1e0e4932ab954e33af57c487ad07840875564bd
Next block: 51d9a4b6fece8728465b31b9d16cabb46795b0f7d5e65f24fb16c399df65adbe
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964795
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: c0e74fee54c881ce748d20f4d768f175e381ac66bbb89d59481f9ce39b486c5d
Median time: 1728964795
Difficulty: 4.656542373906925e-10
Confirmations: 91
Chainwork: 00000000000000000000000000000000000000000000000000000000000010d4
Bits: 207fffff