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: 2500
Hash: 2d3fc9a1ad04f266e8d2b1ed54103369671cbdce277d001fd8817d4c24d79f0b
Previous block: 3bc42f05dd0188c50d315e3e68bdc0cff981bca2e689974c713f8680b9fa4c1f
Next block: 641a832017cf60874e8f6d92ff7b12b16178900db33a89adf9a0f547c62d95fc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847303
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: e0ef0a8568376a9cd4dbf267533b114d28e78b6a187527346205ae45f7f45892
Median time: 1743847302
Difficulty: 4.656542373906925e-10
Confirmations: 143
Chainwork: 000000000000000000000000000000000000000000000000000000000000138a
Bits: 207fffff