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: 262
Hash: 650e15e82a4697ce18459fe47759ead2e89e0e62a26a38e5cef843967aaa66ba
Previous block: 54e551e1486cb219da2416d8dc71a25c69dea8c7075ddd6b33821e433295c04d
Next block: 228e8860f8c39c32fdb57e34d4efae855018443f6b8fe315f9c657c193c665f1
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597911
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: 9ec32fe5e8f641e2fe2f4b2505efd53696ba50165a35465c05f03ccf1bef0a90
Median time: 1701597910
Difficulty: 4.656542373906925e-10
Confirmations: 1982
Chainwork: 000000000000000000000000000000000000000000000000000000000000020e
Bits: 207fffff