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: 2257
Hash: 164ecc786b61d3b56a257155dc5bc18c3c1bb7dc9f606203bfb163de1255a830
Previous block: 1a27d8caa0d8b3c2fa4c0e4b8944c3c8ebaed563259a93704cea7fb247db7ea2
Next block: 29c44aec0fc1c68fafa57bc26da873a00bcf84caec398d1fc86da9e0a2c881e0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480985
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 9251fb5adba2054b046adb908924d2bc87a4ab1c8b1b72d2d0d8e8746aa3c021
Median time: 1719480985
Difficulty: 4.656542373906925e-10
Confirmations: 35
Chainwork: 00000000000000000000000000000000000000000000000000000000000011a4
Bits: 207fffff