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: 798
Hash: 57d78930a44eb52920c68a137dfcdfad96affac5f0820472103e60f49906d6f4
Previous block: 4aa4749c784d47c713a1f1b205bcea4a94c910f2832ebd1036ddfc5c7a2ba245
Next block: 3794501747be2366a4e72606ae5b6d62d473acd894035011418416273340a80e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864276
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0dad81c8762464c7c1e0d3efee19dfd38b32d34167767977076e83cc17163622
Median time: 1701864276
Difficulty: 4.656542373906925e-10
Confirmations: 1446
Chainwork: 000000000000000000000000000000000000000000000000000000000000063e
Bits: 207fffff