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: 1647
Hash: 65758adfdc5fccd6fe60e166c9672c64c6639fdc1c08604883b7d50654da4528
Previous block: 2dba88935e6a57ae39fc69bce4fc8ac3c76b5c63ab5192c02001272ea5300da0
Next block: 68c8047a83a865910a5bc1f979a6a3b234bf9d8ad1e4302294afb034bb71b8d9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159198
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7fa3c90b6e06f64583c9524329bc4a992b05ba71d8bfb9c8d3396ebc95ac50c9
Median time: 1719159197
Difficulty: 4.656542373906925e-10
Confirmations: 597
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ce0
Bits: 207fffff