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: 8
Hash: 420666eb4451524e49066f8db24679b6c7cca0e91d96fc5afbc2a5de493a5160
Previous block: 440900e1dd1958dc25f1b36bf8c2640b0b22b3e057b489aeae1099d16eb0707d
Next block: 33bf5f350a3a9f0ed44bc314c1406ee6b9d4642222fe891a364363c2fe662765
Weight: 864
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597869
Stripped size: 216
Size: 216
Nonce: 0
Merkle root: e96c9ec7ce46e9077cf19f458824daefb103725b9841496b50a62cf3f97871d1
Median time: 1701597868
Difficulty: 4.656542373906925e-10
Confirmations: 2236
Chainwork: 0000000000000000000000000000000000000000000000000000000000000012
Bits: 207fffff