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: 398
Hash: 36823c0c5200b9d94499c65525b61abdc7f6b412ed213fee4c5aa5b0a8df1f03
Previous block: 56231df3c57be9398f583e7453a675058d16982aaba3c92ca78ada6758de6f62
Next block: 114ef8012e37b2931cd0f46f8fd17ed60112606ec9450806321e1f02166e6e38
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597934
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: c26d8ae54809fca1fd571059ab909a6be2e314b7fb02d839fd5f8e0abf05684a
Median time: 1701597933
Difficulty: 4.656542373906925e-10
Confirmations: 1846
Chainwork: 000000000000000000000000000000000000000000000000000000000000031e
Bits: 207fffff