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: 228
Hash: 53ec3df992ff661ba36eca07bac5ad401ae6733c8e5c7e5ffcf63685153bd7ba
Previous block: 686af128ccd5a16759f9b6a258b244f22447830b3a3acc95082f28d3d0906957
Next block: 13d153278cc7cc90d44c373b27c1fa8f215f4aa97fbe4da4f2034603094bc356
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597905
Stripped size: 218
Size: 218
Nonce: 5
Merkle root: 6362326cebfd99dde34fdabccab1c0e077f85ff40e743c659418d17e169a4190
Median time: 1701597904
Difficulty: 4.656542373906925e-10
Confirmations: 2016
Chainwork: 00000000000000000000000000000000000000000000000000000000000001ca
Bits: 207fffff