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. mzaGuArPa

Height: 2291
Hash: 480c4eabe3d68adfa30a858faf115ec72f496ce7f6b82b2eec9e07f534282093
Previous block: 0d1da6185c85f164d482604945ede33d108712578f5cb57e28a842f08f4a37e7
Next block:
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480991
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: edb61c73f93ea436f9c5d971bfb471af03be37dd7e1269a6ebf9d5103ca994d2
Median time: 1719480990
Difficulty: 4.656542373906925e-10
Confirmations: 1
Chainwork: 00000000000000000000000000000000000000000000000000000000000011e8
Bits: 207fffff