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: 835
Hash: 7a45299caad978bba7ed586c688a2a5d3f633791aa2d099d1af8e36e1506af23
Previous block: 21b3adb0970faa105bb4e8e7109b6694fdb04bfb08c64d21512ca91fb737a42b
Next block: 2531cdaa860c278b6c2b557f416142fb8497d884a85c6f1c634cb1372d0d8a9d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857808
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9be8d5584f902e4238b4b3675e59a37ff6d91ae07d91d922cbd0b6679d8c6e56
Median time: 1707857807
Difficulty: 4.656542373906925e-10
Confirmations: 1409
Chainwork: 0000000000000000000000000000000000000000000000000000000000000688
Bits: 207fffff