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: 1303
Hash: 67f870092add2b42fb58134e40493a5419eb82217b07f44b631a11dbabb31302
Previous block: 1bcecb833c640b4d6d14bbe1cf8ac44d8b096a8567174d1b1158fd056af61827
Next block: 186ffd230a083658757cff96485db1aaadb7993736419d62e0bbf736a265a9f7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697625
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9b9887fde10ed9522b6e308250cff7a27124fc02df82ca0204ca64119f7a07b5
Median time: 1718697624
Difficulty: 4.656542373906925e-10
Confirmations: 941
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a30
Bits: 207fffff