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: 1260
Hash: 732bc22e7583c04cfa8756245cbadcb67e4f910e9d3c06d888fe1c9047491fa4
Previous block: 62ca9827c33f03e0d1f25fd230d77316aa50cb35a5bc8d745cf7249bdc0b2933
Next block: 2385ad01a65b6605fd0fb5ad4d1c88b1826433a14e2faaed67e53c4888274926
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697617
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a584634b9b5ca6c2ed24c3c4d634161da6ced2ce2225252f6c9eea120fbc693c
Median time: 1718697617
Difficulty: 4.656542373906925e-10
Confirmations: 984
Chainwork: 00000000000000000000000000000000000000000000000000000000000009da
Bits: 207fffff