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: 1029
Hash: 579e30feedb5298c9cef712454ebe6251625885236ca164ed36b9899974ca16e
Previous block: 06c0b5e15b7c98fca4061c8b71b4bc419aad3f7ef8d49542d1fe970e8db0ced3
Next block: 1b560ff769bee148102499ffd92f5ad35881a102fc5c9de2eb54414db68c4555
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857840
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 587623fe1d5b73a3da3231a9a9d2a1a2bb280e618c56b98c56e0049db76816a3
Median time: 1707857839
Difficulty: 4.656542373906925e-10
Confirmations: 1215
Chainwork: 000000000000000000000000000000000000000000000000000000000000080c
Bits: 207fffff