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: 2018
Hash: 79540abe8b59cd486cb8d8216bcd3c31a8dfbd7e284a0ab446d0992bf223390e
Previous block: 477747ed459181cbb6ebec29fd149c1ffe0e27775789872d9cf8f6642f1b76d5
Next block: 50d74f8df23311ddefdda052832357d4aa4b503bed49bd783772550484748673
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964773
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 14a7b4a61ebfdc755b7aaf1bab36a8f11457168d5a85c19a20629eba91e91122
Median time: 1728964772
Difficulty: 4.656542373906925e-10
Confirmations: 226
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fc6
Bits: 207fffff