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: 683
Hash: 6b26f186ed446f1bd5049d7fe48485b02003d5c1fb427992c83b2aaf5b36fba8
Previous block: 2c3c7223609784887f9859bf7c9dffb9617ef021375cbfc9b77f93df087e8673
Next block: 1e0784d4b334a4e4e73e1ff4aa8d7bd3e1a464ce4b8246dbe507300fbaaaff35
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864257
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 7eba11dafcade37664f2371dec1718ab6d617eb6119ae99c825047fededabf08
Median time: 1701864256
Difficulty: 4.656542373906925e-10
Confirmations: 1561
Chainwork: 0000000000000000000000000000000000000000000000000000000000000558
Bits: 207fffff