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: 1580
Hash: 7b6cbbb6501b768ba9216e7b9f1e2ef7d1e519cc2869424b166d9021bd9f7a49
Previous block: 67f7423eba5bb69b5b893639f9a2a456a808ab2a36e2a40c912711f59dd37da3
Next block: 1edb14020fe354b2607838ff0bf515a47d06e0a63be8ab8fcea1848c6c62cf19
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697671
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0302de8372a43666176a6481060bdc5f7fecd1b79dd8ece85162bee96ea547b6
Median time: 1718697670
Difficulty: 4.656542373906925e-10
Confirmations: 664
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c5a
Bits: 207fffff