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: 2178
Hash: 46fb2e884db09b3d07278ae656e15247a024692f892cb5a60a67fe49f43ab483
Previous block: 06afc6daac3d5184b3279fd492eeb3c4adce2948cf034b843a230d4ce429336c
Next block: 7fced4a334fe703bf7ab8e783172836ada117d0fe5e4c0a825eb9a69e44aa2df
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964800
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a3cc966430d23acfd725261f839ab1a1dc6319e17807dd8483a73146706d1a13
Median time: 1728964799
Difficulty: 4.656542373906925e-10
Confirmations: 66
Chainwork: 0000000000000000000000000000000000000000000000000000000000001106
Bits: 207fffff