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: 291
Hash: 624f2f3eb747ee4a4f06ea913e7b0aaf497f352b03f17d32a2f6c41dda4d2b60
Previous block: 7a9a9b0db31fc791105120b2ed886c03da0ca351c341c7568cd7cb290f5094bf
Next block: 305e7f087394541424b3b9400f7884d4fd844887f2ead8d202bd82fa23b47331
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597916
Stripped size: 218
Size: 218
Nonce: 4
Merkle root: dcd326aefb29bc4d89a28333cd99b277bebce190f58359ba3f5c5b3e18dc44cf
Median time: 1701597915
Difficulty: 4.656542373906925e-10
Confirmations: 1953
Chainwork: 0000000000000000000000000000000000000000000000000000000000000248
Bits: 207fffff