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. mkrgsKuFE

Height: 1589
Hash: 00b768867f1cb0fc3215545ee8637d131e3e5f7a07f88014143515f76c1f206a
Previous block: 0cf9fea9d5c1d586de8f8eb03906dfe8ba4aaa7feefdc16fd9f65487e09991f9
Next block: 17a0ff427081b79f6264f0352991921cf8bcf13cf0ff7aef4f82bf692772614a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932134
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f41cad86f8d086decfe2cfea37912a2b75c5bcdddbb4c771753fac4ade0c39b2
Median time: 1708932133
Difficulty: 4.656542373906925e-10
Confirmations: 20
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c6c
Bits: 207fffff