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: 84
Hash: 0bf8f165e3c402467a8b7a86e09d006eb020245de8f13abacf3bde1c01e0bdcf
Previous block: 4ad912ec42cf197adac91d26438fa7d39ae1d081c3ad44a3f82fc0295b926898
Next block: 601bb6207f03f3395d5d2b16db740339f8cd0d12773193832ecf9b44e6715e2b
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597881
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 9624275a38782e26b8b9c68c741787de7b4c7583d36c289edee8ed29d1e3bc7e
Median time: 1701597880
Difficulty: 4.656542373906925e-10
Confirmations: 2160
Chainwork: 00000000000000000000000000000000000000000000000000000000000000aa
Bits: 207fffff