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: 25
Hash: 6c39a9ac405465b8c03e1753cbd2b41f24d4fde51d26c6bf78f00fc2b944305e
Previous block: 0d34ce1d2a0b3917b62db79d9dd91f71ef43b4f24fe50c713f171006d5acf7cc
Next block: 21043eedd472a22bc30a51694f2f7ef2791cb7cb57bf6deeeb31331bce5b0783
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597871
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: d58f0614e2e91ef247687d582ab0671acb1a8f083e20d3936dac596f0e47ad74
Median time: 1701597871
Difficulty: 4.656542373906925e-10
Confirmations: 2219
Chainwork: 0000000000000000000000000000000000000000000000000000000000000034
Bits: 207fffff