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: 718
Hash: 014f418b0a7d935f0d016905b7785440facbcb50e8e5c8d027b608940627738a
Previous block: 298ffada062a9d8d00b4215a79dcc4ef07dfba1fc04f7b994efb5f89044aa2ca
Next block: 096b87881fa21c782fd115655610ac2c9cf9733c0dacde7891b854b5a2e3af3d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864263
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 624fd36242ec8a5eaafc48c1649f11bd2be595511f595c6b32d191595ea66177
Median time: 1701864262
Difficulty: 4.656542373906925e-10
Confirmations: 1526
Chainwork: 000000000000000000000000000000000000000000000000000000000000059e
Bits: 207fffff