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: 544
Hash: 27d6695611c72a007788bb9763090756b4988748a08d114107a03a19d6b65ab3
Previous block: 64750ed45d4cad3683b5293f49dd9adb911e495b08aa193d961a28aeec7757ef
Next block: 2aef41021097f4e3b6316c2b3f0a5a5c20ff9eb57a922dac165013978a240142
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864234
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1feefb10178db2c6e60e3583a89706a64727a36c5843936a80cb673fb7adda45
Median time: 1701864233
Difficulty: 4.656542373906925e-10
Confirmations: 1700
Chainwork: 0000000000000000000000000000000000000000000000000000000000000442
Bits: 207fffff