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: 284
Hash: 0773a2dab6dfd1aab588f8c2d875abe43dd395ff3a350c76633665b7763a9b90
Previous block: 6dec4b2d7b9c0760ad806151ae4b8d1cf1294df55fcbeb341a1a10ad7151da61
Next block: 0f0dbbd49f1daf662094e45e61ad0cc4b42c86dcca1ae73976c8a963f22f5238
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597915
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 0c779c88089f422984989b3014c86d08e645f0bc6669e94fafe6d8bd0d6b0c1e
Median time: 1701597914
Difficulty: 4.656542373906925e-10
Confirmations: 1960
Chainwork: 000000000000000000000000000000000000000000000000000000000000023a
Bits: 207fffff