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: 390
Hash: 6f099b5c5d74c1ab9c19b552d0fc35bb88ba36a3863bcbf8b91004fcf6d1eae0
Previous block: 6a7298cafb2655272d48b48d3f044881cb0c68df7c9f1e1ad90492a37fbc135d
Next block: 1fb0579c07c2efc282922037147f565f0c53464c54b919ddb433032bcfa71c6f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597932
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 3d3e8a8cfd3bbcfb74a537c1a6169075479609826b4ec166f4e249046fef906e
Median time: 1701597931
Difficulty: 4.656542373906925e-10
Confirmations: 1854
Chainwork: 000000000000000000000000000000000000000000000000000000000000030e
Bits: 207fffff