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: 2031
Hash: 3eb45098c9ae85cd2c87d3fb7b67aa77180d8ce9c6c1112eb0baa5dc16dc7ce0
Previous block: 4a5a59fd47f5f51dc360d7eb86670848783b3d37440efbd1b6635456a51b70b1
Next block: 101e10c63f6df583d04bcbd4101e8ecaae75db686bbe2185d1c1fef853bb070b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964775
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 81494c8c5d1cd47a6ec046afc542b83db8702991f86d0ed8df21794056bc8cb3
Median time: 1728964774
Difficulty: 4.656542373906925e-10
Confirmations: 213
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fe0
Bits: 207fffff