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: 189
Hash: 173bf60ae2c3893a08ce963d5bc8b52ffe0a74aec85925101fa35a4575cee3ca
Previous block: 16c3b251ca6a76960de66f0f7765e6f6f01664abe45e9e569c1ad7e9e1523351
Next block: 30d5ee92f74917dd1eff89b96056a1911b6e61429af261711628fd65165dc3c4
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597899
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 33036f3b5579117c52dc94f4564e8aaa8f05f48fdfe5994367ddcddba1cfea19
Median time: 1701597898
Difficulty: 4.656542373906925e-10
Confirmations: 2055
Chainwork: 000000000000000000000000000000000000000000000000000000000000017c
Bits: 207fffff