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: 852
Hash: 3832d7910cf7211dcd7229b329becf046a1f4f55eb0931722c692a84ce51eb93
Previous block: 0bf0686ee889695791481d50f3b6541470c05a2c088081771d4db7b99ebecf38
Next block: 2f2fe01e1933f91180bf0bf0ffa25c0cfe6fdd9e11930b77b08be1975b6e35c0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857810
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9874252885a2f3a934f2628484f4ff282dcb005a204a5585f187e12b4ede3c8c
Median time: 1707857810
Difficulty: 4.656542373906925e-10
Confirmations: 1392
Chainwork: 00000000000000000000000000000000000000000000000000000000000006aa
Bits: 207fffff