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: 1737
Hash: 64288b11e9709d368ea051e500b948f732bff985c05217c2d28c929848870297
Previous block: 007ab788c09d07fc205f7d0fe1b90ff8373ba4f9e80395768349ebfd1fde8a4c
Next block: 3c6fac7b4704c83a8e3bbda1bcbd999df037b306ff5475955cfac18a79febc95
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159213
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 9de0ac3d73b94fc24999e4d6163a9aca832d909e890b786b1163c92a3746128d
Median time: 1719159212
Difficulty: 4.656542373906925e-10
Confirmations: 507
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d94
Bits: 207fffff