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: 1231
Hash: 663f4685bfc692f90bcdb094a2eb619573f43f3f2ef9c9cfe762e9562cfdd12c
Previous block: 4574e6bebb9a2bb4e31dded9fa73aab1432f202f976870441825f3af83db95f3
Next block: 72087dbae243cd66da5ad063e05d8226259f675e03d4225db5920fb36097e072
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697613
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 22f657c5e019a033c39562719ab00c7981fbaba60d42ae1ebed3164a1ce0ff45
Median time: 1718697612
Difficulty: 4.656542373906925e-10
Confirmations: 1013
Chainwork: 00000000000000000000000000000000000000000000000000000000000009a0
Bits: 207fffff