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: 2015
Hash: 3c0a8a961e4ec9568b4d62c9a446e480e721d5e52bf0066676ce096226dd1be0
Previous block: 7dba66bc43f7bb54aed02c562f608db80f7002859f8dd83fe85f46e90af4f47d
Next block: 5ea4905b496c4a3c28fa15463b252c8e1fd3928b5acbf130af824fc661574d03
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964772
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 1eeb70f5af44ea5de815d752eb5c2673e45c8d123192f2d34c7b3440017c505a
Median time: 1719159258
Difficulty: 4.656542373906925e-10
Confirmations: 229
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fc0
Bits: 207fffff