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. mgqFp9Dhy

Height: 2213
Hash: 12f1d937d1b43c9679d344bb5f32f4ac9d49a509178dee3b85b2706ebf0dab14
Previous block: 5fc28e1c0a7e10434841f6db1200ec01d24fc1f769cf1f43b4b456b3722bd271
Next block: 53d7b754831fd244e4321a547777328456e3db9216a86bbb8721a0e522454d35
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964805
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: d4b5df159d0258dcdc2596f485908d6f6dbc7a029d50f06b41c3c53339dc4f97
Median time: 1728964805
Difficulty: 4.656542373906925e-10
Confirmations: 31
Chainwork: 000000000000000000000000000000000000000000000000000000000000114c
Bits: 207fffff