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: 2168
Hash: 570a3e209b79308f7dde8e482499d35c7d171dcd2b3e19a391bf2efe11383b26
Previous block: 4cf37512c8191ce2f8c9cdd27ed461bb207a3a940b7437574b50e339314496fd
Next block: 39aaf3e21158b15e3bfc7b69bdd390f3b06cfdfcf857d412c33bd2b9b21b8577
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964798
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 7542e4bfcb3da5625b2ff9b516ad03ab963cb11f79d777453b60e2d9df302956
Median time: 1728964797
Difficulty: 4.656542373906925e-10
Confirmations: 76
Chainwork: 00000000000000000000000000000000000000000000000000000000000010f2
Bits: 207fffff