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: 1797
Hash: 033a2a742c0445900f4129b4669ae9dc94754853867e708783af49a6dc474c21
Previous block: 442cf808a3068d18a5fc490bc32201cc04553dfdeea4270ba8e3539f7c1f243d
Next block: 3ec13257a837f337ea97c842ba34d70dea9843c567fc8a6a92283810fd711f59
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159223
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: c6ef37d612170e6c6e82ff9e8eb0b7b8c89a7b9d087ab2be33e3de1acc7de4fe
Median time: 1719159222
Difficulty: 4.656542373906925e-10
Confirmations: 447
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e0c
Bits: 207fffff