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: 1933
Hash: 453ec1dff1fff11b79df4341db3f497807387a60e9e4fa644c0d6e452f0ec26d
Previous block: 10d2fe6035b9b2630bdac43168654caad0ef9c040414c900dca27f3afbd44400
Next block: 13313320d474019170202552c07e0a9a463008b2ae761740dc43ea499fa3fe0f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159245
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4c1e0ca27ef706059f5d2268809262ba792f460e379adc8e4ec5542d8d8683de
Median time: 1719159245
Difficulty: 4.656542373906925e-10
Confirmations: 311
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f1c
Bits: 207fffff