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: 2331
Hash: 5b98bd20d0dbe480f4ca09196c6ed669a8df30a08802550f08eea10ee142ab97
Previous block: 2ac6e818bd5ee3208a81c1b0eb79199622bccd17c5b3e5af50a8dc3ec0fa9bb8
Next block: 130ac52832ac1c14c2776c86066dd4fb5d47f959b73b86d3c7824d7ffa65d9cc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847275
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: abdc511e047ec07d6e5bdea511650bc8d80f81e67b1adb4b6908849c8278e959
Median time: 1743847274
Difficulty: 4.656542373906925e-10
Confirmations: 312
Chainwork: 0000000000000000000000000000000000000000000000000000000000001238
Bits: 207fffff