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: 2617
Hash: 401f75f2543f7f42b18a276e309355fd4cb95b2007e27b8415e52426126f0ee5
Previous block: 44afc7d2567074926b1f7feedd3d043d87bf39a7fb7ec49ca577775ddd7b2dc2
Next block: 1120840fb5217e579a8369bc7c7bb35314a9a8ab0142fb3e270f4fcd990615a6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847323
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b04391d7aa54878d46a2ee7aa8420a966328aadcc395e5b98393cce36b9bdd46
Median time: 1743847322
Difficulty: 4.656542373906925e-10
Confirmations: 26
Chainwork: 0000000000000000000000000000000000000000000000000000000000001474
Bits: 207fffff