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: 2165
Hash: 5dff1f0ce7005de2f407c2c76e625cfdcd2614c0a9d91ff03dacf5bd0f53d8f1
Previous block: 0017011954e859016bbcecce7b0958a19b9be5cc8acdb66efc5fe907654eeb1a
Next block: 24ac6e7a8c0ac490b04131208689e1fc823fa13c72ff9bbb2413ca6af8defe54
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964797
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 9844e9e7437236c3b8bc99b8588827b020b31aee98ba0fe6574c9a78694028cc
Median time: 1728964797
Difficulty: 4.656542373906925e-10
Confirmations: 79
Chainwork: 00000000000000000000000000000000000000000000000000000000000010ec
Bits: 207fffff