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: 1772
Hash: 12742197df762a6611837439fa03afb17896375ad196f019626f8a6362eec2c2
Previous block: 5fee85a01a27f64e2d62925d7c3f9e0bf41bab8befed51e72c12cf8ddb1e9b67
Next block: 77600faa99eabe2b7a2adcd8a5922962ce853ed0a51b18f7d9bfffdae9b27a65
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159219
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 214f2d190b837b2d88abce1c3c6845befc691383bc365df2ed9115f0399cd6a9
Median time: 1719159218
Difficulty: 4.656542373906925e-10
Confirmations: 472
Chainwork: 0000000000000000000000000000000000000000000000000000000000000dda
Bits: 207fffff