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: 1373
Hash: 6fd50b494703a17e6d116304281638dfef91991f20731a17da970ece035e3a28
Previous block: 792212ba7a128559d2817d8cd16557763c5c1dc6aad09b3612b944f71d5484cc
Next block: 3c14327639a84b8f2fa5f778839b8412e8e8e5b3dfc8cbc672051f28b3e345e6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697636
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7216867af33108ddf4747b834df5693b239b793c264028a041d2085858b266da
Median time: 1718697635
Difficulty: 4.656542373906925e-10
Confirmations: 871
Chainwork: 0000000000000000000000000000000000000000000000000000000000000abc
Bits: 207fffff