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: 345
Hash: 47a50cef1eada1b0de3a2813c6e207fec2f0cde3d0617fa325a498798328dd6c
Previous block: 42f91f6412dc02cce6a550474a324940345acdac60942eb32f889b529d203e5e
Next block: 7542190158a05c9d622d85642288a96cf909f11da7cd9fc2bc7cb428484964a2
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597925
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 16335d7fe18365a5d5b83bf750c234222779f8ca79e0cd66809d433abf5aebdc
Median time: 1701597924
Difficulty: 4.656542373906925e-10
Confirmations: 1899
Chainwork: 00000000000000000000000000000000000000000000000000000000000002b4
Bits: 207fffff