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: 916
Hash: 21e9ce665bd437063ed618cd3e0bd91283fdc1d056eec48cde10f3e408caa6f5
Previous block: 10f1bd4604060f60eeaa8d4360c0f38fe8116f976f84223a56e360b12feefb4b
Next block: 7588a0a7b1268f0cecf58b8e8b081abebcfecb952677c06a2c097c9ea5709612
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857821
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 0fedbc71f9b1995aa97dc0af2698e6d98f048e073830012e5d5195c1b226929b
Median time: 1707857820
Difficulty: 4.656542373906925e-10
Confirmations: 1328
Chainwork: 000000000000000000000000000000000000000000000000000000000000072a
Bits: 207fffff