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: 810
Hash: 01f26577d62b4bf017eae07db3d4f7be4dbe9b4457441329b78567739d2427de
Previous block: 10edb9a98f4767757103a0ce7aff24c4330592ed5d8dc719ab544adb35fb2c40
Next block: 30cd4f88a3d20921fe84e591fff5c5fec651919e0025aa93cb25af7f9816d277
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857803
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c967779930c175ae7712689f919f33598031cedee30b586f3dceee6181f4e2a0
Median time: 1707857803
Difficulty: 4.656542373906925e-10
Confirmations: 1434
Chainwork: 0000000000000000000000000000000000000000000000000000000000000656
Bits: 207fffff