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: 572
Hash: 0935f6d763dd166b0ca62a3c2abdd557f8bb588fbeceb5c99ee0145df10b70bf
Previous block: 1f354d82df8303fd7de60ebc66713af9d07e31a234db94799119cd40e39963b7
Next block: 71ed8bbf9ae2ae5b86b1b8af725273cd40ce159e192b08ac7ccad9bb88766571
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864239
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 8232ae072caa4a5e3f6d12aa940dcfb897bb206affb751109382a8146380d905
Median time: 1701864238
Difficulty: 4.656542373906925e-10
Confirmations: 1672
Chainwork: 000000000000000000000000000000000000000000000000000000000000047a
Bits: 207fffff