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: 1299
Hash: 6ae8aa12727a36810a2e8e266f1084a4150472b39fa19cf4087bd3e4c0dcc5f3
Previous block: 347499ba627f1e243024f78324efd977e28d38300a093721038bb10b224055aa
Next block: 44bb320504081cb8fc6bcbdeed226fe64dcfd8065d1743ac9290c2eaa40f2fb3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697624
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 254a55cbc5cdba8e3a1f976ad1fa4dd3ac40afc3f45c302f5f2351e0b4e49889
Median time: 1718697623
Difficulty: 4.656542373906925e-10
Confirmations: 945
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a28
Bits: 207fffff