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. mupBAc74k

Height: 2219
Hash: 6a7ea5eb8873d36577f0c1f7640ff33e990f21db23fb21d203edd16a8e0ec1d7
Previous block: 6320b46efef137f71642cb334114317624227f8cf25439db098178a21a27f306
Next block: 6067196b18208110277a3ca2ad6d9c5c206f003c31e535a5589a8116df61f8a6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480979
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f9c6bf3e162107f65db18242c81bada488b871e9598d9ab7c10aab4b6ded3775
Median time: 1719480978
Difficulty: 4.656542373906925e-10
Confirmations: 73
Chainwork: 0000000000000000000000000000000000000000000000000000000000001158
Bits: 207fffff