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: 1750
Hash: 35d3e04901855bd2c67a9a3a0027bb7b7f7c98401ee0f7d0a3d8456d5c7bb115
Previous block: 7c47ecfc3cd19a0a752a6cba456bef337816bc88d952322eab59522835eebd15
Next block: 3a1b3357f0fe26f2380d301f13200db888a3df588904407460fc9fdd2af5c476
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159215
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 0399f70951cb39151d85c54824c321866efab0e3243dd281f60d49f21c9f972e
Median time: 1719159214
Difficulty: 4.656542373906925e-10
Confirmations: 494
Chainwork: 0000000000000000000000000000000000000000000000000000000000000dae
Bits: 207fffff