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: 60
Hash: 631c42e9f8a63810667d93c34a29eca238463ea94106ce1fc50034322a34ec74
Previous block: 136dfbd3737b46323f3de732a2b244a18087034b9fe799be7fe6afd99d0a7416
Next block: 71ae9e8885b33fe2d885f7906296e1ce18d7522701c531361577a79eda2acab9
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597877
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: b77d9bbbaa5e4c67018b69e7dda33a3bdcfae35485072cef6223388bf73b7c5c
Median time: 1701597876
Difficulty: 4.656542373906925e-10
Confirmations: 2184
Chainwork: 000000000000000000000000000000000000000000000000000000000000007a
Bits: 207fffff