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: 387
Hash: 7353d4d619bcaf5a88f1c6c79e5caf80f2e9d92d4d9012a40b3681c951ad97fe
Previous block: 1e985fa064829786cc3121e558003d8c1bfde998b12ef81aeab94d4d4d1772fe
Next block: 7a814c16dcd85f7cee97ae09e02bdf2657b172b3782381b5172d5c5d125c29c2
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597932
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: e23d9faaf3438022d12b3bd00534c03bf87784e271677c4a105d9cf4c7128b77
Median time: 1701597931
Difficulty: 4.656542373906925e-10
Confirmations: 1857
Chainwork: 0000000000000000000000000000000000000000000000000000000000000308
Bits: 207fffff