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. mupBAc74k

Height: 2217
Hash: 3a795a280abac3c053106381aa962ec6d5a66db2c0c868eb6ad6d600c2a4b504
Previous block: 760b6741f7cb6e9b06a1ce0e86b84fc0c741e549b0dedbb41eba8a2e42f8604c
Next block: 6320b46efef137f71642cb334114317624227f8cf25439db098178a21a27f306
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480979
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c476ca53479a773bbd9bf09afc3203b85bdcdd7196b35ae335b5b0a3597bbc3c
Median time: 1719480978
Difficulty: 4.656542373906925e-10
Confirmations: 75
Chainwork: 0000000000000000000000000000000000000000000000000000000000001154
Bits: 207fffff