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: 1570
Hash: 7f3be605ff5c60b287547c44ec539860a58680dc1e8e1d4d939b800c15bb4891
Previous block: 313f60d0451316a7d1238d6a0ee3ca5c393c2e0cb9db290ef15c7e005abcc5ab
Next block: 2d9767400a2f1bd0a506f62d6a1ebe8b33d8c8fb38adabec99c81fa8f00901d0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697669
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3928b727eb9319bd0160bb46c841593feae201b15da3db4725e68e537036d893
Median time: 1718697668
Difficulty: 4.656542373906925e-10
Confirmations: 674
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c46
Bits: 207fffff