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: 1795
Hash: 1a1fb695d633f95c731a7569822aa24954d6a4f824d4b3409f98acd22cc1f4ae
Previous block: 58a1aeced651977351652c0e40034b72d5139162f88b3bda77304f5adbf51f49
Next block: 442cf808a3068d18a5fc490bc32201cc04553dfdeea4270ba8e3539f7c1f243d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159222
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: cc145fe89a88e1c250d43ba96d5a61307b5cb5b7d8ee4337d14c8a7c218fa4e2
Median time: 1719159222
Difficulty: 4.656542373906925e-10
Confirmations: 449
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e08
Bits: 207fffff