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: 1403
Hash: 25aa5b3568a2bb8cec5b6bd18128dc9825315aa606b018a37d790cb0f6e049d1
Previous block: 0633e5bb9d3849d410e6c3d854bf4a8d7a3f29dc7d064852edad5ae626f4aa14
Next block: 63bac1a08ed3c1cb14c08d7b996d342b8220b0e95db4e071705defb6d9b68831
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697641
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ead79f658a3b3fb2718a364019bff6358fa363c09f539b6c10417dbeec1c7bb1
Median time: 1718697640
Difficulty: 4.656542373906925e-10
Confirmations: 841
Chainwork: 0000000000000000000000000000000000000000000000000000000000000af8
Bits: 207fffff