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: 468
Hash: 29c77192c36b5f06d49b1e48330b9b8de2a7ceb7a04296f28af04d6fc676ea9b
Previous block: 4876ceecbc7967b542ebed0dda011811a221cf7fcdc328bb52752ffd41ba5c7d
Next block: 21a98e49df537448208c0786d5d28d66ff9453c103f7898c53212f9f32628d8b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864221
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 79edb4f8d52e08c05bc10d1b7ebbae74abd5db569458ee68ac3ec91dc26b08e8
Median time: 1701864221
Difficulty: 4.656542373906925e-10
Confirmations: 1776
Chainwork: 00000000000000000000000000000000000000000000000000000000000003aa
Bits: 207fffff