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: 693
Hash: 16fa440398094e0d82ca3ab387a821fd5b93fa5081ec569ef0a68e4dd467e299
Previous block: 152fea46971cc20404c254f4e2158a0a1da461e109acdab8edbf1eb75893bc0c
Next block: 51f77e1923e737f51e1794f941a5661a76032a53716623038edda4a2bfa5a685
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864259
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8f72141ac860271a59997b0b8524765698f16837546e99ab378873d69a3da223
Median time: 1701864258
Difficulty: 4.656542373906925e-10
Confirmations: 1551
Chainwork: 000000000000000000000000000000000000000000000000000000000000056c
Bits: 207fffff