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: 1354
Hash: 0d0bbb2caaa39cf318a35c44a4dfe01ecd97266a92cbc568b26e81ba6adbca51
Previous block: 4a253cba6072d80bf3d20c9282d8318d114e23e457b96942a62d611d987c06ca
Next block: 2f86cc3c19b64825ac295d0da406eb33395ec9bfae20c52ba377dba5219126f2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697633
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b2a08fa9dd7b81dd3927ecfe47f4842a2060db4304cde02b80b8b1a8991069a2
Median time: 1718697632
Difficulty: 4.656542373906925e-10
Confirmations: 890
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a96
Bits: 207fffff