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. mgqFp9Dhy

Height: 2217
Hash: 08e6adb32dd1c98e302f049f1fa7dcfce6d365a53167ec377822426e10d84cbf
Previous block: 7e2ef69c8ef503e17aef2b4dade52932c619c66e9bcf82522b84ce8a7fc1d2f5
Next block: 3693ea45f031fc6a6096e420f4c6672c7a009b557abce45a212199787aa8ae65
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964806
Stripped size: 218
Size: 254
Nonce: 7
Merkle root: d7bfec6f53e58dcdc05a2528f9da9f234d4b72376acd4f975e1a54c6528d9e09
Median time: 1728964805
Difficulty: 4.656542373906925e-10
Confirmations: 27
Chainwork: 0000000000000000000000000000000000000000000000000000000000001154
Bits: 207fffff