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: 51
Hash: 369c9192f372f82e0018ec706cb889c24b01150c90e79af349beeec91098e5c7
Previous block: 6d7b2f4b3b62d18fdd6b7c1a23f3d63ff666ba8399c4f60b1ea0e56cc8e3d0b2
Next block: 1751b721f63c1755c9f65580be8b9bd08dd018e8306a5a2d772e9e5ab43edf25
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597876
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: 47b23c8ece64b295109a5115217b839787435aa726896f990dca30569c88fd7c
Median time: 1701597875
Difficulty: 4.656542373906925e-10
Confirmations: 2193
Chainwork: 0000000000000000000000000000000000000000000000000000000000000068
Bits: 207fffff