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: 2253
Hash: 05b5deca24dfe251df58e3dc2cfb5e7ade10680b6b139e2503c685c47beed9fe
Previous block: 77c7171448d9cae65385fa62859e481b262c9a0d0038c8633c172ae3d3737b99
Next block: 6ff058fb2344b309d8363a1a0d3fa0d7696b0624d80441d611dec2192ef83812
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480985
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3cef5256cf8db9f4eaebb6b5da0abf40d5f0f9212414fe5387cb7cf7ecc79073
Median time: 1719480984
Difficulty: 4.656542373906925e-10
Confirmations: 39
Chainwork: 000000000000000000000000000000000000000000000000000000000000119c
Bits: 207fffff