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: 2250
Hash: 672321364e260ae0cf2a1fe92e0bde2a59546a9115ac821a9347efa1937e6224
Previous block: 46cc7a7a5a12a9754246a7b789efe917d5a8102628b21a257d15578467e64271
Next block: 294e695ff6d2548d2a529c9a7ccd64e7c3a1267eb53371e262608ae3b06b57a7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480984
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3da556eb743cf55026e7662d68c8215e87b9e79cc1a109a2f85e9b888800a16f
Median time: 1719480983
Difficulty: 4.656542373906925e-10
Confirmations: 42
Chainwork: 0000000000000000000000000000000000000000000000000000000000001196
Bits: 207fffff