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: 1264
Hash: 55de9e18ed110585444fab1ca5a44122e1b92cd4f5d33016dc0d72142a3e379c
Previous block: 290b3705c19806c254ffbac61fe4c88e27cb3c5c961df6ecb98f8fde6c846a33
Next block: 67bd40d2bac18fb8e642637c01e3c0b818d12c4189357928ff63b187f358ea45
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697618
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 89126eca166d43ec1f3dfad8e8c98f1361cbc6fb7a28ea24284a8374afed71b3
Median time: 1718697617
Difficulty: 4.656542373906925e-10
Confirmations: 980
Chainwork: 00000000000000000000000000000000000000000000000000000000000009e2
Bits: 207fffff