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: 54
Hash: 7bc825f93c1d316a7b24cd1b1e10e3965751d78c5e381f25bbee6b9ecb649822
Previous block: 10f1919fc3dc9cf8ff41c222e988f8ffbe2a5071ef798480a3edcff786f76818
Next block: 31e2d06463656f72555d58dac48b324ca4c557a00f40035fa131fe770fb1380b
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597876
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 634d3105d52fd7d4f166397530d7e43736943fa064d525d8d6db455152755e41
Median time: 1701597875
Difficulty: 4.656542373906925e-10
Confirmations: 2190
Chainwork: 000000000000000000000000000000000000000000000000000000000000006e
Bits: 207fffff