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: 2394
Hash: 37387e66c9885face968b9ce468e568ac37d3a581600f8eab6576a9ad59abafb
Previous block: 174a8b98bec2f5557fafca1b1b35580564faf285cfa3465c631267cb00d17618
Next block: 635a0618d637c11c2893ed3af94c56f7fe054969fa95af3d6cc8a83c8da15290
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847286
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1f7b2df45c89533e3bdab516f97e4fd78a684640ed54fd30b8d598e593514651
Median time: 1743847285
Difficulty: 4.656542373906925e-10
Confirmations: 249
Chainwork: 00000000000000000000000000000000000000000000000000000000000012b6
Bits: 207fffff