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: 388
Hash: 7a814c16dcd85f7cee97ae09e02bdf2657b172b3782381b5172d5c5d125c29c2
Previous block: 7353d4d619bcaf5a88f1c6c79e5caf80f2e9d92d4d9012a40b3681c951ad97fe
Next block: 6a7298cafb2655272d48b48d3f044881cb0c68df7c9f1e1ad90492a37fbc135d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597932
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 301fdf84c1154292599f075bd35f6dd6c2d35191fbea9f957754e5f199a38392
Median time: 1701597931
Difficulty: 4.656542373906925e-10
Confirmations: 1856
Chainwork: 000000000000000000000000000000000000000000000000000000000000030a
Bits: 207fffff