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: 2103
Hash: 09db50e5a264f36e32ffdfca845fd404424211a0840fa3cc3c3fe1cc231c3925
Previous block: 70e17ee03a16e9f1b6c3f8d2011b815b87875f2c92e3f41638097ac95eda01bb
Next block: 552348b654ab8b94a8b3d1b9b343829ec65545e9e4a37119fee6b1ffe101b89a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964787
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0ae9c18aaa5b289b69857eddc03beeae4a66a266f8d20969df73cd1bb0f17dfe
Median time: 1728964786
Difficulty: 4.656542373906925e-10
Confirmations: 141
Chainwork: 0000000000000000000000000000000000000000000000000000000000001070
Bits: 207fffff