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: 16
Hash: 68856deceb8a73483b87085ecee464fbbd13b45f8a6d076da385deb20f681ad0
Previous block: 193c0581718829d9523674b65253079b360071b3dadc5873e4d24305a94a95ad
Next block: 4ce5d22f6fac8c872f9fe6e452e2a5289548567eca2cca72b1e5e8d95adf379c
Weight: 864
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597870
Stripped size: 216
Size: 216
Nonce: 0
Merkle root: 87282f73bbd3a4d6b7ec24e50596ff62bf56e55ce664852334038cc810e59964
Median time: 1701597869
Difficulty: 4.656542373906925e-10
Confirmations: 2228
Chainwork: 0000000000000000000000000000000000000000000000000000000000000022
Bits: 207fffff