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. mxMfLjAez

Height: 1270
Hash: 681d1454320b70eb16c43737134176251743fa973108ff7196f62411a645ee59
Previous block: 65bdd6bae4ee3248d465929b90d5b8b7645b7f49c6f013df3142b1b668db3f8d
Next block: 024eaa4971f078a9e8fc37616840ecf243557a1b605ebb8d65d7b6ad8ae4fcf9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697619
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 84ea0e6b2c9cd980f04f6049e61d1e9e92fb99034ead028605f9edf737f45901
Median time: 1718697618
Difficulty: 4.656542373906925e-10
Confirmations: 974
Chainwork: 00000000000000000000000000000000000000000000000000000000000009ee
Bits: 207fffff