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: 2240
Hash: 30629432b0e23caa82cff4f368e9a252eda702c85e0c1b8d705b16dbf376004a
Previous block: 2044120c24cd6cdef0158c0a53871afffd7988a48a97145739a7ecadb75b5036
Next block: 282ec204218431ae7aa2c4b4ae4d5f186d0b981021d11505c1e69b3474e2eb83
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480983
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 56e6546946bcd9cf444eae134cfe649f6a0c9a81380847fc0ca7e6f41289d8e8
Median time: 1719480982
Difficulty: 4.656542373906925e-10
Confirmations: 52
Chainwork: 0000000000000000000000000000000000000000000000000000000000001182
Bits: 207fffff