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: 1706
Hash: 13c3576d4de0b9f06057124ab65f860ec39884cfe93d344011b7de275f4efd8a
Previous block: 34ad2a2f40e5137ff4160f34fb5f0c0a24b0c8db293043e3df21576c3ef0db4f
Next block: 19706b1d1d709dec06681062c9a1d9386e5c4c129ceb73a96ee90e63e4b75258
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159208
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8461c271e08ac353f7b9efc1c78b47587b7504e213cf619f08663f1f1e8be989
Median time: 1719159207
Difficulty: 4.656542373906925e-10
Confirmations: 538
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d56
Bits: 207fffff