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: 1631
Hash: 7c1df0894d112fa2c5292cba83ff392f9c4162e4ef7499a46aebd6130f02c8f9
Previous block: 1e8fd93b87f3ef3645478fa7556e97956127e068ccaa86a1035576eb20209742
Next block: 4e90825744dd7874bc3c06f970a5cbd1b87dd3ca5e8f3e1681ce9c289fde5c40
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159195
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5a8339cbdb2ecef85aa25fea68880691aa106ad88c09bdf3b30ea14115c6dfcc
Median time: 1719159194
Difficulty: 4.656542373906925e-10
Confirmations: 613
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cc0
Bits: 207fffff