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: 1816
Hash: 11708e77b47628e9b140e2635b37b6cf83762d782776d9d527200f4711f1fe2a
Previous block: 6666f854260f880b147146b9baf4abcaad39142193c7b7f2709275fe83163e94
Next block: 0d61ebd92d2df0a0b6924704de536e0c22466cccbc8d3ab1d705afc99745bcf1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159226
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: fc36057083823495bbdcf490ed71802e874dcbc92ac76ef46c6e45aa313250df
Median time: 1719159225
Difficulty: 4.656542373906925e-10
Confirmations: 428
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e32
Bits: 207fffff