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: 900
Hash: 7da609a55bab204c5f1ac1a995bea4ec54da363bad99d85769cf78c70274e85e
Previous block: 2117cea5ec5948c2fcdc93f7015cb59e92bc168f4796dc5dca24185b14bad252
Next block: 00703fc841adb28d790e6e789f8edab9e87e94d5ab261f51f0bf7c9a92d2531a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857818
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4c8931e2e44c932e9db9988d8cce329601ade2ba4b49b75c87b3b1aa31f4bab6
Median time: 1707857818
Difficulty: 4.656542373906925e-10
Confirmations: 1344
Chainwork: 000000000000000000000000000000000000000000000000000000000000070a
Bits: 207fffff