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. mgqFp9Dhy

Height: 2228
Hash: 1cf866520d0db9b5174643c96d0a96163614eff04e305c9771e98eb93fa07f01
Previous block: 70c7ad2680ef8f43f2054fdaa61a870fca2a9503d1bb03b0028fb96fcadc4127
Next block: 65e0c26186cc1f22748e999c84571ad0eb261e29e54c42b798aa855268b61bef
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964808
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: bc852b07a2804e8ceddc4f852bb900ad4cb6a31c882ab2b38e0e9d618c0acae2
Median time: 1728964807
Difficulty: 4.656542373906925e-10
Confirmations: 16
Chainwork: 000000000000000000000000000000000000000000000000000000000000116a
Bits: 207fffff