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: 2398
Hash: 5fa8559333dee887ad8aa9344076a4fffc2051da76e8ce9dbec97fa34c76be0d
Previous block: 2691d4015f0e3b55b166e928ff7b20fdfd9104c4a3add19a4baf83143f8e97b0
Next block: 4ec1df3aa3db5dcb73821b133b148c1e77156580e1b77ad4d971afedc44494ce
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847286
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d16c98dbe19678ebac9cc1ef2c6dcc1163cae3a4887bb4f9ae32c06f5cd4dff5
Median time: 1743847285
Difficulty: 4.656542373906925e-10
Confirmations: 245
Chainwork: 00000000000000000000000000000000000000000000000000000000000012be
Bits: 207fffff