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: 1796
Hash: 442cf808a3068d18a5fc490bc32201cc04553dfdeea4270ba8e3539f7c1f243d
Previous block: 1a1fb695d633f95c731a7569822aa24954d6a4f824d4b3409f98acd22cc1f4ae
Next block: 033a2a742c0445900f4129b4669ae9dc94754853867e708783af49a6dc474c21
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159223
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a3267e35eadd61e7abc5313fdf52c545d29095bd0ec42c32aa2e478f4bf110c4
Median time: 1719159222
Difficulty: 4.656542373906925e-10
Confirmations: 448
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e0a
Bits: 207fffff