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: 602
Hash: 5250559b6ca9247e3db922b810ade3e96d03c954785db8c5e6794d8e6fdb50af
Previous block: 116576fc0d2e7d5672faecc45c9c77d035131b1a32e026c53f76f75e1fb8a383
Next block: 466422dd6271be60cdebf447608a5a51fb1f5f6caa1721bce79529503f00370d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864244
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ed5d37685987216a97c109c21d49e27bec28f20769c92ef4ea638cc8487c2ef5
Median time: 1701864243
Difficulty: 4.656542373906925e-10
Confirmations: 1642
Chainwork: 00000000000000000000000000000000000000000000000000000000000004b6
Bits: 207fffff