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: 1393
Hash: 218f912748c538019e5425cd61e772cd10bb1fc786624151b928ed1a23e68a46
Previous block: 75ced56789dfa4c7f34137bd91d2deae6fd91283a6f53ec5da1d835d0931002a
Next block: 2c363d0d42902c80a507342fd388855fc74809f89bb5d947c3d888b6e8f1d7a4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697640
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 0cdfb0ca78a92a7a3b1ef6cfcf19e5a166a319115b61cba9cd810351490f8b92
Median time: 1718697639
Difficulty: 4.656542373906925e-10
Confirmations: 851
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ae4
Bits: 207fffff