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: 42
Hash: 6885efd58017d3fc7caa591b94d2102a71942cbf91f20a3ec5f54a186d118282
Previous block: 63d05438de3069d936f59ede3eb0c8ce5642fc2a9a48bccfbeef3baa4a50dcdf
Next block: 5da7af0a7bb25bb40b8f0048ad2aa07191a5d7a7f6a228d3e12ca687f1c08a9e
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597874
Stripped size: 217
Size: 217
Nonce: 2
Merkle root: 5c72081938f8808fce0b630bab0d4c9b9cd37726e4bc97ae90e3d45b5d6e2aaf
Median time: 1701597873
Difficulty: 4.656542373906925e-10
Confirmations: 2202
Chainwork: 0000000000000000000000000000000000000000000000000000000000000056
Bits: 207fffff