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: 1726
Hash: 65da5721ae8c51046666eb925781a640a941a7fc7eed51a9ca32e4e70da66ee6
Previous block: 735e51b187861d54e8848d567e21fdcc9b954ec8fc4455aa0cba982ff808ee58
Next block: 256cb5ec55ac7f8b888b549a804a1794b965418d5defde841cd1dace2b570286
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159211
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f1b962f726ca90af64591da49ca91cdf2f361147f64f1fe82579b09d4f35b3a6
Median time: 1719159210
Difficulty: 4.656542373906925e-10
Confirmations: 518
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d7e
Bits: 207fffff