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: 130
Hash: 4f216c4cc34133110b6ca66a911300c0e89f1b74e8c3a233fa7e0dc4466a58bf
Previous block: 24a1f5503263d0eb157706a77f0fdadb8fe8d2be8fa37d6dbbf72ead20515b83
Next block: 0ff72961f913df6925a84e4a07532d388e13b0e8168067e6bbf32a5194d9c29e
Weight: 872
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597889
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: a9fc81598346636893825dcbc0283fcf8194c1797c617229d55b17df50c114ae
Median time: 1701597888
Difficulty: 4.656542373906925e-10
Confirmations: 2114
Chainwork: 0000000000000000000000000000000000000000000000000000000000000106
Bits: 207fffff