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: 1376
Hash: 5ef5777d6a18778e6d2956bdeefff94942ad8a8756adbcc5f40d0cc953213640
Previous block: 2eda56feab86d210a1130e921a8897750a815bfb5ecf77766b1af2b1f0d49e95
Next block: 1ac84a223b2d30a04dce1bf9e7fdbf55c5e117a5c1eb859c8754263d9d1d258b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697637
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 1b964d9e90f58c8a2f774f1351d90d5c79d831a6fdfd56b7b0bdab88d326669b
Median time: 1718697636
Difficulty: 4.656542373906925e-10
Confirmations: 868
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ac2
Bits: 207fffff