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: 186
Hash: 2c4b2367da6f2bb90015aac1377448e8f6e0c3800e0edc64e77740d77118d2de
Previous block: 29ae144576172c9560f89b0c437db98d5d44091e2c8d3bb3c5f80d91a191a37c
Next block: 1d76589da84bb06e92ba4968afb972c755d0e65c6c3ef008f6b2503e34c68ab8
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597898
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: 58484b947982755fc29c2ed848c18e8152dc3d5fa13f6c980fbcc62c216fbd7b
Median time: 1701597897
Difficulty: 4.656542373906925e-10
Confirmations: 2058
Chainwork: 0000000000000000000000000000000000000000000000000000000000000176
Bits: 207fffff