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: 1687
Hash: 4f2101b299ec3a28b9dc6aa8355d92775050ddc6c99feb06a064f2243fc6d6f7
Previous block: 1809b64e30b59f001a7c274788c9073eee98718f7f34a4253febf3a7f191f11a
Next block: 3dd26f26e7d87564fc2a9e19ab4b9d8ca00857468d5ec984425820749576b366
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159204
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8bf5ac48d4aa09af488ddce9b82413a50a65a8b05932002a5cac7c2ea4e7db18
Median time: 1719159204
Difficulty: 4.656542373906925e-10
Confirmations: 557
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d30
Bits: 207fffff