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: 244
Hash: 3998cd9a4e04d6cb2907e050fcd52091fa5149498549c5653acc7b8e8721afe0
Previous block: 6f2cbe3694635852fa21cd901e3c6ce2e66659b4270726cb1b01442d1c8608eb
Next block: 0c77b7f8c3d8b4978bc7795b8482e2ee83d8e8646bd940a7092f390a0caeac46
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597908
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 675fc7806a5e0c1d23a120825fd6d8b4b3fe22f3cf90a3a0421855733001e516
Median time: 1701597907
Difficulty: 4.656542373906925e-10
Confirmations: 2000
Chainwork: 00000000000000000000000000000000000000000000000000000000000001ea
Bits: 207fffff