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: 1378
Hash: 6932a6aa60d0d8d1a1c3136ba67a53313c2861a965c55d332c6ff8bf0bc4dec8
Previous block: 1ac84a223b2d30a04dce1bf9e7fdbf55c5e117a5c1eb859c8754263d9d1d258b
Next block: 3448bc21b2572689c307c4132206a33276ba78fd5806f44adbe598c178fe19f8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697637
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 58e3b068819bc0cdb1a35446b6580d52ca54c6830548f4ddbbc6fb2d25880f5f
Median time: 1718697636
Difficulty: 4.656542373906925e-10
Confirmations: 866
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ac6
Bits: 207fffff