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: 339
Hash: 43452ef66f9bad8bb1905fcd996e16d387d310969fa81d985ce2ef5589b5d63f
Previous block: 5a80b3e362d930aa47189e89143cc24601089573aaa4fdfa5a8a3832990d9038
Next block: 7b40ce355d1c9d79eaede0b1dedc6c23944c7c8d05955e93dd30926ab14d00df
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597924
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: f4a82062402703e0ebf914a3592288644b973ed1c90a779059ee28369b71ebac
Median time: 1701597923
Difficulty: 4.656542373906925e-10
Confirmations: 1905
Chainwork: 00000000000000000000000000000000000000000000000000000000000002a8
Bits: 207fffff