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: 28
Hash: 2b0ebfa9462631ebe3bb20ffa9fd2adf6e963b2292edf73e8bc6a5b65b9a391a
Previous block: 34e69a326d0ea3c60d437d39cbff12167166fc8679a42d840415045be7e70930
Next block: 01cd20c30a1b214d8460be979f68ae619f8acdd14bbe384c94bd39d681d06e02
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597872
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: aa0185f45b92773290211085553bc3a572ddf3c840b33f6bad12608fae204a9d
Median time: 1701597871
Difficulty: 4.656542373906925e-10
Confirmations: 2216
Chainwork: 000000000000000000000000000000000000000000000000000000000000003a
Bits: 207fffff