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: 143
Hash: 0898542a5d43e2d2b323ae534368e77bb7e1dcf0c53d7acb100ae0c72ac88e3b
Previous block: 0845c65b5619d69d5b6e0ed2f78059d4f070654e7181c2a36aba989d3fa6f14a
Next block: 6ffefae56998f8418255356af48aa5802e7c3c7f85f89d33093e4772cdf9ebfd
Weight: 872
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597891
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 0147829e6861b5b79e89d16be890aeaa5723888cdc8c7f58a5bd47652ef33509
Median time: 1701597890
Difficulty: 4.656542373906925e-10
Confirmations: 2101
Chainwork: 0000000000000000000000000000000000000000000000000000000000000120
Bits: 207fffff