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: 1604
Hash: 1838e565dfcaf1c23de3d0820f55166a26fe8e41d925760b6d006c1f13446895
Previous block: 4c9d76e63f7aed1404441fa34b348e42b5cad88f7ad2ee521925876cd96b3688
Next block: 6c37fc8b4dbd8d84b00011f37b5eb762c1f8a49f3c652df561b14fcba49f0452
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697675
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c4513866ae83911f7346dc8738bd6a57b33f7a0044dbeb9b3f9de38b2ce83965
Median time: 1718697674
Difficulty: 4.656542373906925e-10
Confirmations: 640
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c8a
Bits: 207fffff