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. mupBAc74k

Height: 2228
Hash: 74017c7fb0030b47d346d2323e683825d97e81d6cb4b4e5281df6eb2a49dcbfd
Previous block: 7cac91beaf181a4e0428b7c99c40427a85a95b2fdcdd771eeaac3389d9bcfeea
Next block: 5b1f702298a3ada852008b43fb20f3b00a7df28bd7414db878317c71ebea4586
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480981
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: c4a3cea9627781373da2583f74a0d82c232e6c8013ee8b8b2da9c986a3e6af08
Median time: 1719480980
Difficulty: 4.656542373906925e-10
Confirmations: 64
Chainwork: 000000000000000000000000000000000000000000000000000000000000116a
Bits: 207fffff