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: 19
Hash: 3b3bedc75892135c44cf3040f8b53cb8b57b931abee6328ea01e9a8833e23888
Previous block: 26dc5965d49dc567a2d29d27ed9929c38412442f23cd39fb85ab0656bc88c232
Next block: 4800bb73fb0c92ccb36ab2068ea94112ccffe296a48940a034e0bd17d6dc9f5d
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597870
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: e3360b6281eb358766f1961eed56e1ff2821a1f5e7dba0fd88915c5208d7096c
Median time: 1701597870
Difficulty: 4.656542373906925e-10
Confirmations: 2225
Chainwork: 0000000000000000000000000000000000000000000000000000000000000028
Bits: 207fffff