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: 201
Hash: 7b9881ca38973c0cb84132b15a7ea5a619abbe20c1a5959711e4755a7009e06f
Previous block: 1d5adba89391e33598802c45ef4c25e780dc63abd4df2235d14cfdeec8af5081
Next block: 34ac2fa493f6179520ed0d19ae7b507882b92db0b8d29011e6c9e0906d15b77f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597901
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 6bee36de913d3cf5029ff699b8f86b4290469a3c48b33270a1a6b0112083dd3a
Median time: 1701597900
Difficulty: 4.656542373906925e-10
Confirmations: 2043
Chainwork: 0000000000000000000000000000000000000000000000000000000000000194
Bits: 207fffff