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. mupBAc74k

Height: 2273
Hash: 231d97083beb6b10b2de42d987441650284124bc556c2ed353ea725e7c06299c
Previous block: 693775a7fcbc309f8e66e7f57af3e3f48fb5a6bd97a937ec77ead83c849845d3
Next block: 78bb821fd4ed8758a514a50e47a31b01e33bdd6255022db5e6f7839aae8ccda8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480988
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 7e8f350690fbbf39b19d817fd0541f514fea5666646d12ed55145409f7d386b5
Median time: 1719480987
Difficulty: 4.656542373906925e-10
Confirmations: 19
Chainwork: 00000000000000000000000000000000000000000000000000000000000011c4
Bits: 207fffff