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: 717
Hash: 298ffada062a9d8d00b4215a79dcc4ef07dfba1fc04f7b994efb5f89044aa2ca
Previous block: 5abfaaaa02db0cae290279d43a5c13a9358b5223a1869c35f47f3c9f20f61c56
Next block: 014f418b0a7d935f0d016905b7785440facbcb50e8e5c8d027b608940627738a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864263
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: eaed4e340fcc2dab465001a060ded11f3724265a34a0314dac38b120df7f5f59
Median time: 1701864262
Difficulty: 4.656542373906925e-10
Confirmations: 1527
Chainwork: 000000000000000000000000000000000000000000000000000000000000059c
Bits: 207fffff