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: 1755
Hash: 317908aebcfc28804862af742c304b4e4d748e3b5b554757edc57a466a91a55e
Previous block: 6d71983d828f9628f5479248eb8899e4f6eb26f01cf9356095c449703fa12a1f
Next block: 30823ec40a3902d68d32dd0f6e042265962822e175f93dda181de8f16dcfe603
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159216
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c2569e2a90e3b3eab3b15a1a34bbe0c7b584a253376347eb111ad84e0fc7709a
Median time: 1719159215
Difficulty: 4.656542373906925e-10
Confirmations: 489
Chainwork: 0000000000000000000000000000000000000000000000000000000000000db8
Bits: 207fffff