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: 2171
Hash: 5bda53167835e210007f5ad0c00c9fa9725b901f3000f349a96308758a4dd6f5
Previous block: 0b6c9d6cf37bdcf4617e49ab90046d731887969ae5a4e95aa85e9c547203b580
Next block: 36a297d34238fbfef44d8c65a520812ae9285959a82abfa7aea4164a8ec68c2d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964798
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 9155dbfab529d620eea4938b4f88d05d5a501f8f88141575f4ee9dc4f72d7527
Median time: 1728964798
Difficulty: 4.656542373906925e-10
Confirmations: 73
Chainwork: 00000000000000000000000000000000000000000000000000000000000010f8
Bits: 207fffff