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: 1759
Hash: 221515f58ecfdc77a3b77b48bb5a98fd8d8bfdc6e16375975b999dae38a424c4
Previous block: 5b8ce90b0615bb98f1b81a8e900c55900eb18cad552b778a2682980bd4f2f3df
Next block: 2f6162575104915a7060efaa839e1f7b426dd839ead4b46ebbcdcdc45304a844
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159216
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 51d86cce62843ff55617aa420ee346aa845f84773ea95ae8f3f5353a7555549e
Median time: 1719159216
Difficulty: 4.656542373906925e-10
Confirmations: 485
Chainwork: 0000000000000000000000000000000000000000000000000000000000000dc0
Bits: 207fffff