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: 710
Hash: 0497205501047aac58de7d3f87027f45980e1698c604c1067560a08c9b7b1e5b
Previous block: 3407a645d5c51c9553483eef93ce706efd8899ff22ed84a2cdc16866aacc8730
Next block: 4741366cee4a3342d2f6221ea39095109ea47cef6088ee7591223d984ee63767
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864262
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 735d93c4c2d590c54cc3506e9ca3582faa5c6508b379d45d98598f999b157676
Median time: 1701864261
Difficulty: 4.656542373906925e-10
Confirmations: 1534
Chainwork: 000000000000000000000000000000000000000000000000000000000000058e
Bits: 207fffff