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: 771
Hash: 0b0568e0c7fe99023a6f9d84ca2355ae06eba5599adae455959ecdf5fc4f971b
Previous block: 6a2def1c2b363f128e9246f57a1dc3a4ffccb82859179fd3bf17a1083342fb14
Next block: 72759c267b96a1b5e816454b59c1d06c40cc71f2105efd360ee7b3399c663732
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864272
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 967e250343d9ba28b7088241b8c9d3a9e2d30a17d3a93488c333b06d6a3f4294
Median time: 1701864271
Difficulty: 4.656542373906925e-10
Confirmations: 1473
Chainwork: 0000000000000000000000000000000000000000000000000000000000000608
Bits: 207fffff