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: 850
Hash: 24bbb0657459b2eb9db7f54f7fb1d2ad4d7ff2c1b07cdfb17ea1d365c66eebc9
Previous block: 3b0c0702a7d485ce1817a74657cd15093a9be602c8bb86b584b372dbe09cb1ce
Next block: 0bf0686ee889695791481d50f3b6541470c05a2c088081771d4db7b99ebecf38
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857810
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 82f9f45365193285870041cf1aa5f4172db5a991946749e3268906ea34e18933
Median time: 1707857809
Difficulty: 4.656542373906925e-10
Confirmations: 1394
Chainwork: 00000000000000000000000000000000000000000000000000000000000006a6
Bits: 207fffff