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: 2092
Hash: 22143b015eda913beffacc30f7518f2ab7ae1bde5e051f839efd1e91236973df
Previous block: 04514c64e8732fb44369ac7c252f79775d0437eb4c62df6bb8796c298affa078
Next block: 2fccec120528e69c3bb0cc2cb570a6ba9d50047f26168aeab81b4717b0f17d74
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964785
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9d0736f010083cd42ec7d4a68c31d5bdedd79bbe5b93146433d15f5d2e04f859
Median time: 1728964784
Difficulty: 4.656542373906925e-10
Confirmations: 152
Chainwork: 000000000000000000000000000000000000000000000000000000000000105a
Bits: 207fffff