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: 1840
Hash: 2ed8263136c530cea895ef48ef001c26acb3948e2563b7a4563bf182d8df1e13
Previous block: 3d629535e8fa9d56abf2c77c3a5e5402a292d77b3fbea298e737d3c88d610a54
Next block: 7803efb53d19663b078a8ae1210bc594e5211615d64b8b129e42849bb7ddaf8e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159230
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 126ae72901a060f29368f7d1fba370b8f220168ad52002790673775dc043e4c9
Median time: 1719159229
Difficulty: 4.656542373906925e-10
Confirmations: 404
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e62
Bits: 207fffff