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: 227
Hash: 686af128ccd5a16759f9b6a258b244f22447830b3a3acc95082f28d3d0906957
Previous block: 4e7dcfb227383033afbe6ef122ce7506621342e4e22de68cc0c8db9af8a5bb3d
Next block: 53ec3df992ff661ba36eca07bac5ad401ae6733c8e5c7e5ffcf63685153bd7ba
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597905
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 372d29396c09001d8cecd6c92379c25958f25b99a21370bad6d618a0fe0f511d
Median time: 1701597904
Difficulty: 4.656542373906925e-10
Confirmations: 2017
Chainwork: 00000000000000000000000000000000000000000000000000000000000001c8
Bits: 207fffff