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: 2642
Hash: 57d6b7b6d9a287c72a2ac65c1389c1a95cc7b886265b5bf94f15a46776298ab2
Previous block: 02fc0b904559c9331b54332b3573fbb5947e9a23867cc76fcd38ba39dc8463cc
Next block:
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847327
Stripped size: 218
Size: 254
Nonce: 7
Merkle root: bf55d38c0ba7429386bf64292f087cf969c5b4d8710d7325ad2174ef2691ef56
Median time: 1743847326
Difficulty: 4.656542373906925e-10
Confirmations: 1
Chainwork: 00000000000000000000000000000000000000000000000000000000000014a6
Bits: 207fffff