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: 366
Hash: 19792bd4e1afb0dbfec20e96c60684d979ba036e62ec72fb220818f2c29b292b
Previous block: 0fe8a9885463690307e91ca1d63d56e437c07612fed8cbed6156a5a70554a0f2
Next block: 480207c11fca872c1a9d7290ca81d706d8ad4409dad1acc38732b75ac28bfa5b
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597928
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: f583789ee41a7d286ed5d4b6723db37bbe9b6b9f47064ab668bc39969ea3d159
Median time: 1701597927
Difficulty: 4.656542373906925e-10
Confirmations: 1878
Chainwork: 00000000000000000000000000000000000000000000000000000000000002de
Bits: 207fffff