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: 2539
Hash: 6e7006b2d88ee314b21fa9739df8b728d214d7f94fbf72044b6df32ec3327e08
Previous block: 0c78b00ebfdb5a5691d5e6dc543a634ead6aff03c0e0dee218deabb12c8519d1
Next block: 6cb8b2f1aed263bd508ba248692c94f72208d64245e91a4e605ab4937a786f88
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847310
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 90549f0cfdb7ed7a3e53f58d9704f9b4b5e6151350b94516bb660448cfe7f756
Median time: 1743847309
Difficulty: 4.656542373906925e-10
Confirmations: 104
Chainwork: 00000000000000000000000000000000000000000000000000000000000013d8
Bits: 207fffff