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: 443
Hash: 245161cc2654de8a98ca83064790f8968db77f01f17e7d0e57f919a5de57920f
Previous block: 5aaa3e9c77f14c5b27b4b2cd7b0e399d509bbc463e84d685cd8b8227bacc39ce
Next block: 6160eadfd8ffda431425d6a15ab6439da63ae6e0a12912ab484220660ed93e64
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864217
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 66e472eb609a700d58729b94b337124c7d6044dfdfb2090bddddcb28b37b18c8
Median time: 1701864216
Difficulty: 4.656542373906925e-10
Confirmations: 1801
Chainwork: 0000000000000000000000000000000000000000000000000000000000000378
Bits: 207fffff