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: 203
Hash: 61c67bdd99b616ab410e81d97d1221f009f5fa24fd006783b24a28d228f2b13c
Previous block: 34ac2fa493f6179520ed0d19ae7b507882b92db0b8d29011e6c9e0906d15b77f
Next block: 504863158c53cc6c8013555a0a2e18a56d4c8cd529d084fa46b8a34341370efd
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597901
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: fefdc09e79d58753c90671135e242fb41d4ce1d8e3a5e5d35c7e809d67d00ae4
Median time: 1701597900
Difficulty: 4.656542373906925e-10
Confirmations: 2041
Chainwork: 0000000000000000000000000000000000000000000000000000000000000198
Bits: 207fffff