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: 1585
Hash: 001e50fdd13948411d534a14c163feecf115d60acde569ef2d6d46e3bf97d8b9
Previous block: 575899605bb2588930b180391139fa3fe15e20a433a78430ac979832b090945a
Next block: 57c4cfe1c7ce7dc61304434084327bceb851a6063eb3dd8a60c47795945a4fa6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697672
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3a3ff9eb72b4dcfabdd74e13060909ff886094ca888604ae73b6bf0328a5ab0c
Median time: 1718697671
Difficulty: 4.656542373906925e-10
Confirmations: 659
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c64
Bits: 207fffff