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: 1716
Hash: 3a33051adfc99f7a2f0bf249855ace65be74e8dcf076d4437e4dd1f4c871183c
Previous block: 3b23775aa14b70e99195efdedce537f85e57a6675f12d8f8ec68a83ac4d8b32d
Next block: 382c8df48675a22300b1aca545313be9f2a9d505c8bb4f9b03c78177bd2215c6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159209
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a25452ef94b06999ac4f84325c8abc94cb94c9362240b7ab423e1c93ef5c66c6
Median time: 1719159208
Difficulty: 4.656542373906925e-10
Confirmations: 528
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d6a
Bits: 207fffff