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: 1752
Hash: 6e398105aa93f109b53f63e6e53f395f9787a815c089aa4e234e438785528ede
Previous block: 3a1b3357f0fe26f2380d301f13200db888a3df588904407460fc9fdd2af5c476
Next block: 32e6c8d20f7fb0b018064e9862be3a7639440f1e7d5a85b4d88e55c6d8b90e62
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159215
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: e6ca5a3af75442256a8892b2b27bb5d0fc3a7c334535a9c76e40256f52a5133f
Median time: 1719159214
Difficulty: 4.656542373906925e-10
Confirmations: 492
Chainwork: 0000000000000000000000000000000000000000000000000000000000000db2
Bits: 207fffff