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: 557
Hash: 0d999c907e30f5b402f9a4a0c3ee14c5ae6bc345445c2c4606f819b13542161f
Previous block: 77522ab2afaba58eac1f96330ad8f65e44583960182d1f8465b7bc9a1838d3b3
Next block: 6b4d3b0f29161cf988b3f657a215d7524aa52ecc2a433f8ba7f5b21fc996975c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864236
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c7e1127d827be0a68883b7a505a091572bbf3a8e0162c588ae7513c222c29f30
Median time: 1701864235
Difficulty: 4.656542373906925e-10
Confirmations: 1687
Chainwork: 000000000000000000000000000000000000000000000000000000000000045c
Bits: 207fffff