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: 200
Hash: 1d5adba89391e33598802c45ef4c25e780dc63abd4df2235d14cfdeec8af5081
Previous block: 38c39d1c0ddd0540d768beb9e332d49bb2ebf072ce07970e95445abb9e8b37c3
Next block: 7b9881ca38973c0cb84132b15a7ea5a619abbe20c1a5959711e4755a7009e06f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597901
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: bb94d8fd07346d95518284b8e128f8a9838da0f209714bc2a0fe3bbfa69f0404
Median time: 1701597900
Difficulty: 4.656542373906925e-10
Confirmations: 2044
Chainwork: 0000000000000000000000000000000000000000000000000000000000000192
Bits: 207fffff