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: 1651
Hash: 32b1b0ec6e944d1481e0506947bf8345536a1e6e6a007c5dcf966310e31bdcf4
Previous block: 3c75075386ff2ba40d351cc32773a488cfb1e0b2c1b0afcfc9fc4b1f08ef0064
Next block: 5131189c1d78982cefb1f6670b8f3e5ad8449b3533f2716680d975e90a095e2c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159198
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: eee3068c76f3e692624983f5c8b69add1828885d251cd19dccff6914f0abfb8c
Median time: 1719159198
Difficulty: 4.656542373906925e-10
Confirmations: 593
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ce8
Bits: 207fffff