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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mkrgsKuFE

Height: 1592
Hash: 304db86311fc7a70e257ebff13a9adcfd5c9b6198dc9c24879bc08e93401afae
Previous block: 4d0d30df96260d5dba8a84c8f9fe7812f0a801832bd7298366c97cc1c905b97e
Next block: 0905c99ba86dc8d5855b86133812fb59ede6da3d585b645d2efe8a14509967ee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932135
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: ef01f386fba96bee8d5905e27ff19d77e8daf44f267dd014867e11dd0c20e970
Median time: 1708932134
Difficulty: 4.656542373906925e-10
Confirmations: 17
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c72
Bits: 207fffff