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: 2102
Hash: 70e17ee03a16e9f1b6c3f8d2011b815b87875f2c92e3f41638097ac95eda01bb
Previous block: 38aacd7411a36bc450b33cd6cb7e8f75cdb4edd8577aaee49dc9f8470629f34c
Next block: 09db50e5a264f36e32ffdfca845fd404424211a0840fa3cc3c3fe1cc231c3925
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964787
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 51f1f48bc99c11a97053783d9f6192c11f13a34bd853381d8283978df700a987
Median time: 1728964786
Difficulty: 4.656542373906925e-10
Confirmations: 142
Chainwork: 000000000000000000000000000000000000000000000000000000000000106e
Bits: 207fffff