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: 2274
Hash: 78bb821fd4ed8758a514a50e47a31b01e33bdd6255022db5e6f7839aae8ccda8
Previous block: 231d97083beb6b10b2de42d987441650284124bc556c2ed353ea725e7c06299c
Next block: 18a1a0a585f756e2ad1e7cf571406a56b92d0bc1ed06d26f7b86458763e2d832
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480988
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: d9fd28cac4576b1e985745bdd91f8a66dd32f3850a560cebdf0e7af5962d7f00
Median time: 1719480987
Difficulty: 4.656542373906925e-10
Confirmations: 18
Chainwork: 00000000000000000000000000000000000000000000000000000000000011c6
Bits: 207fffff