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: 1698
Hash: 5ad846cc17753a9ce232a622cc149e8f22ced10012f556aa5cf0bacd11c2ae75
Previous block: 4a6a048ec5ce6276d8faed422937432db8344343103d75c753c6e8edf214a6b6
Next block: 1fd41c09100bb71a539d2bf872eb00f99bacae8d8f74a00389e25e4da0a9e44f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159206
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 43b9901d6aa1534366b7a4391e77ebec2b256ec0a2d08050308b5dbc9301e737
Median time: 1719159205
Difficulty: 4.656542373906925e-10
Confirmations: 546
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d46
Bits: 207fffff