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. mxMfLjAez

Height: 1584
Hash: 575899605bb2588930b180391139fa3fe15e20a433a78430ac979832b090945a
Previous block: 450b5a82487aa60c7fee7280ff6276a4cc0524933b9fd0281a43fa9ff1591985
Next block: 001e50fdd13948411d534a14c163feecf115d60acde569ef2d6d46e3bf97d8b9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697671
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 88bcefdc7d49cb8c112fed958fb6d2a327f08cf6cdde34ccae4cb0e3c2b5f950
Median time: 1718697671
Difficulty: 4.656542373906925e-10
Confirmations: 660
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c62
Bits: 207fffff