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: 1383
Hash: 12eb4b8ddeb61023ebb02b0d783db2139d079671650f4426dfad49208cd2f3db
Previous block: 24473f5759526b45f9f79765739aeb43621fb541bfc3e8d381b61fa0a268e4ce
Next block: 07f727f6c65451500b3061ad1034d219fd91a07560caba4fb2bbf332e40b3f35
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697638
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 41211f7f2af458a68a5571d0c465c77af7a7fa4bb7f1b7a01bce4caa808535cc
Median time: 1718697637
Difficulty: 4.656542373906925e-10
Confirmations: 861
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ad0
Bits: 207fffff