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: 13
Hash: 2c5c7bde9ecf95b823b4325b8acb86f59176dd945079177df714c30c21b2b1ad
Previous block: 6af950307b7b7327e9c590b86ae0e81c3b2f4bd95f451f48b1bb526c48ca1573
Next block: 1faec8423043ec98968608823620b36ae8bc8c7b5ef2c1485d17d90cef04569c
Weight: 864
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597869
Stripped size: 216
Size: 216
Nonce: 1
Merkle root: f2e0b231cf3b1b183a364646d35ccacdf93a5c7fcadc32b533a9e186b7a618d7
Median time: 1701597869
Difficulty: 4.656542373906925e-10
Confirmations: 2231
Chainwork: 000000000000000000000000000000000000000000000000000000000000001c
Bits: 207fffff