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: 1353
Hash: 4a253cba6072d80bf3d20c9282d8318d114e23e457b96942a62d611d987c06ca
Previous block: 36584a2d019aea28e6cc4b21b4d2cd8b0b42d9756cd57cf74057e4fcd30f7f72
Next block: 0d0bbb2caaa39cf318a35c44a4dfe01ecd97266a92cbc568b26e81ba6adbca51
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697633
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 42c5078f7ea7d87d469749882361345c81a67468ca418923e054647c227af386
Median time: 1718697632
Difficulty: 4.656542373906925e-10
Confirmations: 891
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a94
Bits: 207fffff