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: 1494
Hash: 0ed82a63b7445242b125591d2154fda0d3aa9ea47ee99eda163767581bc4e100
Previous block: 379595e764c0982fc1a16cbefd0404f1075ce5dea75630b3271116150eacb91a
Next block: 44b510d8a1976b86b1809cf87c2b85b480fcc99809915b678b1b4608029c780f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697656
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1d9d6eb78b0bd55bc8eff456b476f8a3462cce183b45a05b6771ccfd36801498
Median time: 1718697656
Difficulty: 4.656542373906925e-10
Confirmations: 750
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bae
Bits: 207fffff