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: 1000
Hash: 1c596251c3098b35a40c25b843dd605ee589ee78ab9882cd85e956d988fcd9c8
Previous block: 393acaf8ec05a9a6e8b57537cd13cd4964772e5da0a9c5d8b3fbe3fdac9a778e
Next block: 0c4df633c82278fd7293bfae5a4c75bf0dec856e9e17494172a3f212acc093a9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857835
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5f21faf0904c1a97b990b5643008e5fcbcfa592ef37ed3d46c4f87166a95a994
Median time: 1707857834
Difficulty: 4.656542373906925e-10
Confirmations: 1244
Chainwork: 00000000000000000000000000000000000000000000000000000000000007d2
Bits: 207fffff