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: 1498
Hash: 0487e8a5b9425a4a28daf0aa381ec89c5558b5057cf6f619c24ed343c62c04ab
Previous block: 365c67f511ae491131d2752f62ac1364e86148776445f62f354cef346ef20761
Next block: 1909d5430ada4f4afdc463943b1c8b1cdbd8a9dde56020aa6ef58688c1bcb0a7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697657
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 62673580caedff2501d302e811308fcebb8895a849993dfa630588733fa4fc0d
Median time: 1718697656
Difficulty: 4.656542373906925e-10
Confirmations: 746
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bb6
Bits: 207fffff