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: 2247
Hash: 3cdeab58561d8f9cd9da910267c71a4aebcc33c4d37f709e3bc78fe4e0d7b628
Previous block: 4c6df3e7d86f71d23405d48d4c8d3ea6bc709ccffc114969bf7dd2b43ddf8646
Next block: 3c41f821fe08d85c1a4e5297e87dc4c713d6f088712ec4e8a098e74c2589ba96
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847261
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 808c1546602feef52c88163f40f33e6d2081a11bc2e4bba605188771a541d1d1
Median time: 1728964810
Difficulty: 4.656542373906925e-10
Confirmations: 396
Chainwork: 0000000000000000000000000000000000000000000000000000000000001190
Bits: 207fffff