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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 248
Hash: 1129587641e6622ba3c9f650d8fd547948601ca8b6514ab617c94a753940299f
Previous block: 41b15befe84b7638c3f3923cc6a06e14b589e4f0aace6bd5591237c2bd1c35d8
Next block: 01ca77f1c329c6684ee9b0ce16e6075f66e544db555f3428f8e835f95a5d0909
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597909
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: a959462a1081dcc7a24562866fb1ef17e097aae30227d933118bf0f24fa885c5
Median time: 1701597908
Difficulty: 4.656542373906925e-10
Confirmations: 1996
Chainwork: 00000000000000000000000000000000000000000000000000000000000001f2
Bits: 207fffff