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. mupBAc74k

Height: 2247
Hash: 78c03a5a1d9f0791df24a272dee8a0ae99a8d48ddbbba63da61f84e8fe318a8f
Previous block: 0a9796099a9a4f90cdaa76f17b56bca026092d64edc7b501eec43b60eb2d4196
Next block: 572fae21e5e1ead6104073a73161fd9a6735bf60b4651a509236855a7d75ec32
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480984
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a4ba3df8bcc89e3d6bdb88239ef35315dcc94e53d89a6a385105f63b4032f3cb
Median time: 1719480983
Difficulty: 4.656542373906925e-10
Confirmations: 45
Chainwork: 0000000000000000000000000000000000000000000000000000000000001190
Bits: 207fffff