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: 616
Hash: 0c3753e4e0f16ee1a38986868971c44ba53a7a996002bff4cd0ce53afb33f2e6
Previous block: 42c8e55f3c18b397ad3053c67883a57fd6de24650b69ae7fc789acb18b911fa1
Next block: 05e8f2ef32eb96ea25926a8a4015564415d01afe5b7cb5ccbe4fc77de7e831d1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864246
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ff67298222bf4cb2ef406d3e710bd1309b202adb2a874aacc05d452dd67b826b
Median time: 1701864245
Difficulty: 4.656542373906925e-10
Confirmations: 1628
Chainwork: 00000000000000000000000000000000000000000000000000000000000004d2
Bits: 207fffff