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: 2442
Hash: 1b1764672014111d03dbc676ee419eadcd9727d42f359d9f2e46668751160f45
Previous block: 725f9fad0f14a9ce6f34fd3f64da0cde566aa4b965fee4fd014aca74335217dd
Next block: 5f115c12797ffe89bbb143749a9abc1aff25cac994e7821401c7ef8df66b83a6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847294
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1b317d32ddc2656f712af9f022c149b5df45a393f4f7bb32e16b9c46025b50fb
Median time: 1743847293
Difficulty: 4.656542373906925e-10
Confirmations: 201
Chainwork: 0000000000000000000000000000000000000000000000000000000000001316
Bits: 207fffff