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: 1123
Hash: 24376871873a25da3c9a686d49e20ea97d24a96f992ed47a039538c1561459a7
Previous block: 7e8c02d473b1bf0f572d4799467cb87cf3f8ab46a031105edd4c86e93521c7de
Next block: 009e4a4fcd85b8ec5da17ae3a9bfd9d719d0ebc78df8cad2e131357402d0aa9c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857856
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 4613ad425ded6203f1cccfd46b7d9ecc565b31f86bd8ecab558721888c6c6e3e
Median time: 1707857855
Difficulty: 4.656542373906925e-10
Confirmations: 1121
Chainwork: 00000000000000000000000000000000000000000000000000000000000008c8
Bits: 207fffff