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: 2443
Hash: 5f115c12797ffe89bbb143749a9abc1aff25cac994e7821401c7ef8df66b83a6
Previous block: 1b1764672014111d03dbc676ee419eadcd9727d42f359d9f2e46668751160f45
Next block: 47ae88ff51ce82298c2541b75032415a5e6fbf7e4a1c2b27c38c35032e8e6736
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847294
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: fc3b9c4001bf4ce81450f794d6f6856889c341ae73e5e6be0e2aa080e7ee3ca1
Median time: 1743847293
Difficulty: 4.656542373906925e-10
Confirmations: 200
Chainwork: 0000000000000000000000000000000000000000000000000000000000001318
Bits: 207fffff