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: 589
Hash: 1877bada0220441703e7df6e05504dc05e1982e5b85e1ad638f56d95f86e6b8f
Previous block: 67312e6fd4614c4b75881b247260b99aaa745797aff5ee297dc85fdae101c985
Next block: 20c7433e08b7c2b318de56e47215a7b2e306c58b24feb7779f455075714d0846
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864242
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d54dff503cab5efb0ba33c7019afee499702531f566722591d639c9231dcac27
Median time: 1701864241
Difficulty: 4.656542373906925e-10
Confirmations: 1655
Chainwork: 000000000000000000000000000000000000000000000000000000000000049c
Bits: 207fffff