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: 2392
Hash: 2392477bf968671cf53d23fde4c9b61b1ce9fea61c595736da1dfa27a3b720df
Previous block: 1f97c61daeba40a446cfcbe5d58cfdae834accf431ab76eaf7975e16fe81fa48
Next block: 174a8b98bec2f5557fafca1b1b35580564faf285cfa3465c631267cb00d17618
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847285
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: c5c2808329023f53418f49b035f45a06b8ed1a5533d9c886e9279a58b8a7f4e6
Median time: 1743847284
Difficulty: 4.656542373906925e-10
Confirmations: 251
Chainwork: 00000000000000000000000000000000000000000000000000000000000012b2
Bits: 207fffff