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: 780
Hash: 49cb514f669220868f43752fb18e82b223cbef2e25727b837fe0eccd5284ccc0
Previous block: 7fb1e05c982aef5ab9ec767e7e641aa8550391786032113ee369dbacb0320006
Next block: 1fb27538b26d8a647bec1ba7774613a56f8da47bc7e4c44771b13ec630235a15
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864273
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 6fa51e21329a5239d77d3a53126cf650fb85ac3c63830f2b82c03dc43130f867
Median time: 1701864273
Difficulty: 4.656542373906925e-10
Confirmations: 1464
Chainwork: 000000000000000000000000000000000000000000000000000000000000061a
Bits: 207fffff