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: 2166
Hash: 24ac6e7a8c0ac490b04131208689e1fc823fa13c72ff9bbb2413ca6af8defe54
Previous block: 5dff1f0ce7005de2f407c2c76e625cfdcd2614c0a9d91ff03dacf5bd0f53d8f1
Next block: 4cf37512c8191ce2f8c9cdd27ed461bb207a3a940b7437574b50e339314496fd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964798
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 2c5be1af192d2bc9c72f8d36fc319591e6bb459ec540233787a7108a29b714e5
Median time: 1728964797
Difficulty: 4.656542373906925e-10
Confirmations: 78
Chainwork: 00000000000000000000000000000000000000000000000000000000000010ee
Bits: 207fffff