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. mgqFp9Dhy

Height: 2223
Hash: 141b943695f93cf5cb79c3b0a4ad894badbfce7e64f773feca757044fa8a7b79
Previous block: 3307b1a8196bdcfba3473693c433faa0500ce5ee1c179d455e3bcdca631e85e0
Next block: 5310f8fbe9fc7814c74ee8fce29c23cddb89bccbd52262da15443cf924d04b16
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964807
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: bf8305087fc588a1837ec6beeae184822e95bcef1d1dd9c097286f2d19e4e9f6
Median time: 1728964806
Difficulty: 4.656542373906925e-10
Confirmations: 21
Chainwork: 0000000000000000000000000000000000000000000000000000000000001160
Bits: 207fffff