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: 757
Hash: 199042385e41279c04839eba56b981155ec9c76fd57d18a701b9baa3872a9e20
Previous block: 4ddf52e2aa93869a369b1d83bd6b767e9075e58ca9c3c3cb82bd11820e0119ca
Next block: 60dfe28eb986c5176ff1723b3d1b11dd6aa8fd8a274b13589349a99339d2b643
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864270
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 32656ba2422c7ecd693013ed58c5004f389321c1db11b1c92c83de429e8ea882
Median time: 1701864269
Difficulty: 4.656542373906925e-10
Confirmations: 1487
Chainwork: 00000000000000000000000000000000000000000000000000000000000005ec
Bits: 207fffff