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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1566
Hash: 5fb9946be1fb0477cbe1cd883fe483bc0af1401d5979253b180dd3c30cfc18e2
Previous block: 024e669159c046df23a35a69d50711989dca08a5930dade4168508b2640afcbe
Next block: 71b3b383534aeda1fb26c86e800b2eacd60fe4f8f4e5a621a08764bc57c85b43
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697668
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: d7899c6183eee11fb3baa6941353a897f9324ee254a987b2f042175e1f9bec2e
Median time: 1718697668
Difficulty: 4.656542373906925e-10
Confirmations: 678
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c3e
Bits: 207fffff