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: 199
Hash: 38c39d1c0ddd0540d768beb9e332d49bb2ebf072ce07970e95445abb9e8b37c3
Previous block: 096cd756799aa42a42b8f0b44bc0422864e6898eb889e1f0c376fc35f4eab468
Next block: 1d5adba89391e33598802c45ef4c25e780dc63abd4df2235d14cfdeec8af5081
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597900
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: ac49cbe4610c4c382c8b589e17da8b9fa0b26dbafe6d677ac031e14dd0b5383e
Median time: 1701597900
Difficulty: 4.656542373906925e-10
Confirmations: 2045
Chainwork: 0000000000000000000000000000000000000000000000000000000000000190
Bits: 207fffff