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: 1404
Hash: 63bac1a08ed3c1cb14c08d7b996d342b8220b0e95db4e071705defb6d9b68831
Previous block: 25aa5b3568a2bb8cec5b6bd18128dc9825315aa606b018a37d790cb0f6e049d1
Next block: 6e0bd3cbb9549560ec4270ecc633672278c7c2623d2f682a7fc8beb94f5ca464
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697641
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: b0867cd0615fec495e4f763dfcdac4d46ad13a1ddcc0bf841cd87a06e40e7810
Median time: 1718697641
Difficulty: 4.656542373906925e-10
Confirmations: 840
Chainwork: 0000000000000000000000000000000000000000000000000000000000000afa
Bits: 207fffff