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: 1803
Hash: 782b01e1b9a661ab26711a5d6ee1c542e8b48df9d38cef091efdf75be3435e0f
Previous block: 2d99c77590654b0e752dc095b69bde74f75e6164e5d766bdd0944f7e5e30e61c
Next block: 27135c3e1479fcf251fe682afa78ada08b56e3eb7aaa6cc963d926134496f740
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159224
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e8352645f127e61758cf19a9fabefbce497bb9063f52d56e2ef564dd4c46a682
Median time: 1719159223
Difficulty: 4.656542373906925e-10
Confirmations: 441
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e18
Bits: 207fffff