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: 2043
Hash: 31d6d28900f1b4e17b3ad5767e522d16720d77b47af88a0fc9b7ed4b54c4967d
Previous block: 3c8f6c7bedece1d9c4d11d657cc3fb2e38bf198c57cd42c150e41942576d9966
Next block: 2998ddcc2eb538338927a4888290c54f25e38fd6770c6bc339d3a070ba3033fb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964777
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d2b489936710b1219b2de3db5d741f3953dcf4d4628a70f82e14303a62b5f348
Median time: 1728964776
Difficulty: 4.656542373906925e-10
Confirmations: 201
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ff8
Bits: 207fffff