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: 1989
Hash: 30e42c8f87b1e151bf8cb7dc458dfa36f3a7b609ed4443f05ea63d5e2edba406
Previous block: 367d414b4fcececee6f38c14055f291f330179cc6fe853d8b6b29308a119b73b
Next block: 10bf925b8903fde1a43263b0511ffca332c113be26f24578961f08e4cb17d1c6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159255
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f13061754ea0637e6e63dc7538374f3032921dd4dc2e76dc7b27e733c34c9a01
Median time: 1719159254
Difficulty: 4.656542373906925e-10
Confirmations: 255
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f8c
Bits: 207fffff