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: 1346
Hash: 23d3b5031012f7b2ed3ca1553853e4bd18145856a2f015f3535af5fcec700973
Previous block: 51e76fdc7b36fe243612d33f7a34589544350c1240bd78a2aacc6145f000e532
Next block: 204babf4fea8245330c33dfb782154acfa3db44af70d0c4658cd02a939b85a5d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697632
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 8cac40e27f2453d76a2533cf6aa4cd76e20a9275b9c25dc38d4bb47ea4237cfc
Median time: 1718697631
Difficulty: 4.656542373906925e-10
Confirmations: 898
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a86
Bits: 207fffff