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: 2445
Hash: 6464a519b8c721e2e7df4a46910742484a92768f093890da76acb3f5b5ee6e60
Previous block: 47ae88ff51ce82298c2541b75032415a5e6fbf7e4a1c2b27c38c35032e8e6736
Next block: 68541b354263b18e6056930c3e47523ae0c55680b658721f7c5053d1f3c9b726
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847294
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 19ca6ab7223c60ce58db8ee93e355f9599d71399b136a6270e19410ae96aad28
Median time: 1743847293
Difficulty: 4.656542373906925e-10
Confirmations: 198
Chainwork: 000000000000000000000000000000000000000000000000000000000000131c
Bits: 207fffff