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: 1405
Hash: 6e0bd3cbb9549560ec4270ecc633672278c7c2623d2f682a7fc8beb94f5ca464
Previous block: 63bac1a08ed3c1cb14c08d7b996d342b8220b0e95db4e071705defb6d9b68831
Next block: 07db4119d56431be285878369442bc7c4cb8aa3be75edaad435de5201177b067
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697642
Stripped size: 218
Size: 254
Nonce: 6
Merkle root: f0c8f1a1911a97a397a9b5a066821fb609f8dc3bc477bab22f6af94b755f1c71
Median time: 1718697641
Difficulty: 4.656542373906925e-10
Confirmations: 839
Chainwork: 0000000000000000000000000000000000000000000000000000000000000afc
Bits: 207fffff