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: 2231
Hash: 3408c2cbc696b5075a19c10c5cf5ce9b59d75e2df1544b6178f90a901fac5511
Previous block: 09e7e31226f2ee60580fb96910f180abcb32187bc51901467e358b444889c375
Next block: 16126e8ed3c8868950c12218c1f1804702f454cffd621872f7a14b783b3096f1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964808
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 0e237520a6aa41b063399ceec879491f179380b01ab3472cf2a1b251152cca31
Median time: 1728964808
Difficulty: 4.656542373906925e-10
Confirmations: 13
Chainwork: 0000000000000000000000000000000000000000000000000000000000001170
Bits: 207fffff