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: 1312
Hash: 523623302b2e05be2e43acbb538b52f853e58611e55caf85c1aabe0635cd5cc7
Previous block: 27e5a3745a24651f6f2e71adadb135ed60d55fc2fc2835e76960e8818357a65c
Next block: 743836f0ecc709f5930c5f1786d4e640ee9ab98d0982749a6c75e6c71b7284c4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697626
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 2a15e297efcbb9a3308b5b388499b00fe78d4b1b2887b729ffea28cf4a555ac5
Median time: 1718697625
Difficulty: 4.656542373906925e-10
Confirmations: 932
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a42
Bits: 207fffff