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: 1343
Hash: 360c3b086d920d49a1254cf6bafa851e00aed5dda0cb26a44edf11a1c07f50bd
Previous block: 2295dae450f4f1bf036650fbb9b3e7610a12408a5e87ec40fa2c9359c0e1b6ed
Next block: 7a2a763d8d9869a99908d63f8d086a511289b2b192f047a88d45a05567535c88
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697631
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 250988f786071d51d80dd4f7d98d4cc781929dcf1014200280d93ece1d0cb842
Median time: 1718697630
Difficulty: 4.656542373906925e-10
Confirmations: 901
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a80
Bits: 207fffff