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: 516
Hash: 773d593acb814c80181a4c70b7b8e9ab3b9194af1bb513f09fb6f71155e01ec1
Previous block: 5276ffcd34e1dae8a3b1c2404ed3dfdd349b1e33be505cd876be9dfc3fb4ca24
Next block: 18b5440cfcca8a6b25d4b7143406b6c70e9c0ce07c2cf589adbda80e0f33fa2d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864229
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1e3fc35d4f7f79235d1edb3d4fc9fadfed088f298e3bc80a7b7e8f7d93d461b8
Median time: 1701864229
Difficulty: 4.656542373906925e-10
Confirmations: 1728
Chainwork: 000000000000000000000000000000000000000000000000000000000000040a
Bits: 207fffff