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: 695
Hash: 78fa7e1a9d07e9cb51362940e17fd21aa5797d8f558653c4e72ba9bba8b1f958
Previous block: 51f77e1923e737f51e1794f941a5661a76032a53716623038edda4a2bfa5a685
Next block: 743521cee496ebf3f3b725153a07c8be40947475832cdafd8b719d7441243949
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864259
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 8fdc3025d1a4b9fed362232f175d59a176d8b1072cde0f9c09a73ea949cf2470
Median time: 1701864258
Difficulty: 4.656542373906925e-10
Confirmations: 1549
Chainwork: 0000000000000000000000000000000000000000000000000000000000000570
Bits: 207fffff