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: 136
Hash: 57723276ad2201329a809f05230acffb578da52f6f408b96f8b375bde75f1b4b
Previous block: 7c6e02998c4bf017b7a07445828ec92925d2e79117d4f9395ece9a1376cc23d0
Next block: 6ef138b4a316fe1d3895ce10fc2b8011ccfd528536bc0c158a17eed421e3403a
Weight: 872
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597890
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 197381683f6ad0d4786cab4477352f265a6cb845c68fc62e28e5f16f7c4742db
Median time: 1701597889
Difficulty: 4.656542373906925e-10
Confirmations: 2108
Chainwork: 0000000000000000000000000000000000000000000000000000000000000112
Bits: 207fffff