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: 1841
Hash: 7803efb53d19663b078a8ae1210bc594e5211615d64b8b129e42849bb7ddaf8e
Previous block: 2ed8263136c530cea895ef48ef001c26acb3948e2563b7a4563bf182d8df1e13
Next block: 0bd4fa672ef4ce66928bf2c13eca49bd5f2e753b8def633906b9776dde66fc74
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159230
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: a834fd8fca5f1e21c2d9c4c7e74b4d4e2f575c08c7b35da978b9b3ebebe6d024
Median time: 1719159229
Difficulty: 4.656542373906925e-10
Confirmations: 403
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e64
Bits: 207fffff