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: 1767
Hash: 7796436f4242d79bb8678cba3232e536a2ff6aa11912095fda7ff2a350ea86ed
Previous block: 075e35ba8fe983a72d92a4935186d29c66bae4c2c3338641ff2c392ae974052d
Next block: 1c0eb6a1a909df967e7a4b64056b5380410633cd507be0fe0140a6d55afa1e02
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159218
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 86d700d41c274641468c5c51fa96f05b7b00b4ae72dda6578375285569759d08
Median time: 1719159217
Difficulty: 4.656542373906925e-10
Confirmations: 477
Chainwork: 0000000000000000000000000000000000000000000000000000000000000dd0
Bits: 207fffff