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: 1440
Hash: 7d03d315f80ddb883ed4ab1d7b696ff50408209d83a5e0c878cf9b68f156bb2d
Previous block: 4b98de8eb9451f0659ba0fc05315ce40026b707fd1f5b345db2e8b6afcbda41d
Next block: 7d4be52a8c2b428e501f5f71a93eac5811548c5bc5e4dc7278644a76fd740627
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697647
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 7d56f1b6ab2204218b54deaaac31d4f9dec757d480d14ab73bb6a403bf87874b
Median time: 1718697647
Difficulty: 4.656542373906925e-10
Confirmations: 804
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b42
Bits: 207fffff