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: 1896
Hash: 52cef971f2639871e34c7258bd08dfe0279ce6b1e3797fb95df6be09d2fc5aee
Previous block: 59cb66998ce295786ad4caff1e8ff2bf249382fc2a41bbc4bf06bfdd97f49674
Next block: 2726f5c2b37b4a284b97dfc5d2da336cd3f2f338f8770091eedcaa8986b1c2b6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159239
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 045304ed3344819b68be68f02a6f6c6244f3dee31aeaeb7a131958877a2b1417
Median time: 1719159238
Difficulty: 4.656542373906925e-10
Confirmations: 348
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ed2
Bits: 207fffff