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: 1925
Hash: 72de8942d879569374d2e24666bdb6a72a5210d7c826905559ee66ae30b92d32
Previous block: 57daf6f313515c3e0883cdf924c206e952f059ab911334817d108b2add6adb52
Next block: 5f8a3b1f1d8311b560fad3a6d80d89bdac72500b4034981c7eca3886077ffefd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159244
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 7114666f68f26b1697eb69076fb1b28b04f779c26e82f08ab160f24aa0d45cfb
Median time: 1719159243
Difficulty: 4.656542373906925e-10
Confirmations: 319
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f0c
Bits: 207fffff