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: 772
Hash: 72759c267b96a1b5e816454b59c1d06c40cc71f2105efd360ee7b3399c663732
Previous block: 0b0568e0c7fe99023a6f9d84ca2355ae06eba5599adae455959ecdf5fc4f971b
Next block: 1a9faaf8912b8959189945b5e2c03ff5b8e569a53fd764b5d2bc61477d41f57d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864272
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 165da1278edb4065530bd108f65c79921dc4c756f20d65ce471f6ec73f29da87
Median time: 1701864271
Difficulty: 4.656542373906925e-10
Confirmations: 1472
Chainwork: 000000000000000000000000000000000000000000000000000000000000060a
Bits: 207fffff