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: 1652
Hash: 5131189c1d78982cefb1f6670b8f3e5ad8449b3533f2716680d975e90a095e2c
Previous block: 32b1b0ec6e944d1481e0506947bf8345536a1e6e6a007c5dcf966310e31bdcf4
Next block: 67a07ef745b01482724a275e469e6bd36c85fd8c032eaff117ac0daabf6da2a4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159199
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 88275d90146afc7e67aa14ebb1e0405c9cae8f3224798fb4e2b394f4a817773c
Median time: 1719159198
Difficulty: 4.656542373906925e-10
Confirmations: 592
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cea
Bits: 207fffff