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: 1674
Hash: 7176fcaf5f249bd656c87cc5d0bd078fb9b1f93fd90b41d7f1be8fbadf6f6df7
Previous block: 787dbc19fd998065a503160bef0ae9e9249e0c6b2624d318f3b61ee0598fb63a
Next block: 5ad7e3e9f88e56c5022c014f693ac845ebf3966b5d5e3e0cbfcd75531dd077c9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159202
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 909223455413f8d12f4bd45c5d052f2c08ab0010e89ce59a4f45ab919ed97748
Median time: 1719159201
Difficulty: 4.656542373906925e-10
Confirmations: 570
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d16
Bits: 207fffff