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. mxMfLjAez

Height: 2641
Hash: 02fc0b904559c9331b54332b3573fbb5947e9a23867cc76fcd38ba39dc8463cc
Previous block: 1b8dda14ba9acdd96f40037f36a693c89c3e76490cefd402b5dddf462a6baa74
Next block: 57d6b7b6d9a287c72a2ac65c1389c1a95cc7b886265b5bf94f15a46776298ab2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847327
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 0be6f86a0f5d9975448fc276a742e3b1c3ab01b70aac4d999e0d59ca061be0b3
Median time: 1743847326
Difficulty: 4.656542373906925e-10
Confirmations: 2
Chainwork: 00000000000000000000000000000000000000000000000000000000000014a4
Bits: 207fffff