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: 1815
Hash: 6666f854260f880b147146b9baf4abcaad39142193c7b7f2709275fe83163e94
Previous block: 64971de98db4b74fc904a5b461aa53abdf30d4e9254f8acfdc0111b6b3250901
Next block: 11708e77b47628e9b140e2635b37b6cf83762d782776d9d527200f4711f1fe2a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159226
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e00c720aaeaf740e2558beafbbb1b7bd9adc8143b1870b1e6bca31a9a6ab6b11
Median time: 1719159225
Difficulty: 4.656542373906925e-10
Confirmations: 429
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e30
Bits: 207fffff