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: 1190
Hash: 11eeb9fd8d9e95f27538d896fe6e244e651aeec0aac886df511eaa40076bb75a
Previous block: 16627ceb1e4840fddfe852fd824f4a70572637cb08fe9a6057d700fb95e6b60d
Next block: 0cb43e7a923136576a1bd325c370336780670b9c3316c009f43b2b4a7691f219
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857867
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 34333743ca1a634141822b3199759ac0e4aa5bf5e870ad6a6aeddcec95956252
Median time: 1707857866
Difficulty: 4.656542373906925e-10
Confirmations: 1054
Chainwork: 000000000000000000000000000000000000000000000000000000000000094e
Bits: 207fffff