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: 862
Hash: 66cf25cbc24c61e540d7dfbd23fab7baf35757e300e292ef68689aaa5d53a426
Previous block: 57a0fb391da9aa6fd50ed9aae6029aa9213c47c9b00345bb99369357addafb11
Next block: 65c086960875df50a75cb57cf684e0fc023834050d7ef15f9b67fcfe881fc785
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857812
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: b2b3c0e2ac8f00599a24c693f7e10aaeaf944801db97835a745fa95c0c4ae8e2
Median time: 1707857811
Difficulty: 4.656542373906925e-10
Confirmations: 1382
Chainwork: 00000000000000000000000000000000000000000000000000000000000006be
Bits: 207fffff