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: 2091
Hash: 04514c64e8732fb44369ac7c252f79775d0437eb4c62df6bb8796c298affa078
Previous block: 4c3c8e385f04175dc74561d0c9993af05ed37faf84990103101b5be5e7b1bc7b
Next block: 22143b015eda913beffacc30f7518f2ab7ae1bde5e051f839efd1e91236973df
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964785
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4051a6af6989e7e430466aab11f853f8b8a6a7502e8a189e0898ac82670376a0
Median time: 1728964784
Difficulty: 4.656542373906925e-10
Confirmations: 153
Chainwork: 0000000000000000000000000000000000000000000000000000000000001058
Bits: 207fffff