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: 2076
Hash: 6d8a877424d4a2eae1b8d0ee02eb17cbe6879e63f0f6c9f8327011ca1c833f45
Previous block: 5a05e7b201d7d7c4c1a9bb94af96520272391d1274decbc451f919bff2edc673
Next block: 508454c7b6d14146aab071a466051feea0c3381d8fbe69d0a89cc197326867ec
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964783
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0ca213d8d16cbe8a768dd2a157798c9cd29d600347c1a713cffb6d95bd718663
Median time: 1728964782
Difficulty: 4.656542373906925e-10
Confirmations: 168
Chainwork: 000000000000000000000000000000000000000000000000000000000000103a
Bits: 207fffff