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: 2238
Hash: 603c42cc6e59b543688e82270f14cf2308146ec22825583bd1c6877ecde898af
Previous block: 42f25029b2f15b7ee1b984de3114d436d49063e52ecbb1ab572c843572b9152f
Next block: 2ee8e9fbbcf9127a05fb85cb3d95fa9948801ff04a014d67caf54304a5af96b4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964810
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1c6d842b149aa0ff6241719c944f8b67fe6857509adba0875431014e74db570a
Median time: 1728964809
Difficulty: 4.656542373906925e-10
Confirmations: 6
Chainwork: 000000000000000000000000000000000000000000000000000000000000117e
Bits: 207fffff