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: 1298
Hash: 347499ba627f1e243024f78324efd977e28d38300a093721038bb10b224055aa
Previous block: 58c626e684069d1b13b9164b43d893baee45658013eb6c05e25be578e8cd024d
Next block: 6ae8aa12727a36810a2e8e266f1084a4150472b39fa19cf4087bd3e4c0dcc5f3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697624
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 01a1bba21ee54bb427e4ea1b5c05621f8056772c369e712c5d4ae661623a3f6d
Median time: 1718697623
Difficulty: 4.656542373906925e-10
Confirmations: 946
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a26
Bits: 207fffff