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: 1577
Hash: 27397dc0986efd32a3ba471f633f0ac6adb81935f61ba09909345007bf60ab1f
Previous block: 7e58a323fd87778c21483b915bc4bb85566c7055d9fda1e6961ca50de26448d1
Next block: 3934a8db09e61b83875037470897d1d677cf0be3508ad3a169a8daa05ea6017b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697670
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4dfe0179f8dcc1e64b0fc08eb19b08f4a9ead27f7db0df184e6dc4fa49e229e9
Median time: 1718697669
Difficulty: 4.656542373906925e-10
Confirmations: 667
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c54
Bits: 207fffff