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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 870
Hash: 4f0d1105033c2722816290e225c00caa81fe6af55508bc4cbb2c25540977095e
Previous block: 0288ced9ad237db125320a889f226f3f082d671ce665f561c6d2ab0315ad9956
Next block: 4f3c17cfa718a82c4db32424bae47c544df7fb12ba2a0e7fc51ba9be782077c9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857813
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3e4698e079f31b68da4594a1b3817f895d6112c999ce28ba382e893a13ac91e0
Median time: 1707857813
Difficulty: 4.656542373906925e-10
Confirmations: 1374
Chainwork: 00000000000000000000000000000000000000000000000000000000000006ce
Bits: 207fffff