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: 1595
Hash: 05385285888e8ae0fb1092b87dc1126dfc2e7dc592b2d6eac8321bd73ba14bc3
Previous block: 575b60fdc2cc0e3238385ddd5f52da44a9dd9fcd612301da88bf226c2f65ae1a
Next block: 21381958bfa49fddc2b00e5f884e86c10e2c66a41019a1d741d52fc27e44b21c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697673
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3a7bf264c3c39376d79c687b44f4aba9501ba92c0fcf581b14b822e89d736313
Median time: 1718697672
Difficulty: 4.656542373906925e-10
Confirmations: 649
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c78
Bits: 207fffff