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: 1428
Hash: 11e4446d5cbd1dcfea8850fef22132e94b4f05c20030325e150fc05c7dd50137
Previous block: 3a11713ba53f51eb10397571cf8ee80d0299584cc107da38901c8540da9e6ae6
Next block: 51c444300c26c4399a6ad67676a3f2a2d45e3e7895cc09643203665c5ee44d89
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697645
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: fd0afba717034dc58fedce34a3c1a0f8d9a506ad8f925c1e4fd0b48fe6540aa2
Median time: 1718697645
Difficulty: 4.656542373906925e-10
Confirmations: 816
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b2a
Bits: 207fffff