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: 1594
Hash: 575b60fdc2cc0e3238385ddd5f52da44a9dd9fcd612301da88bf226c2f65ae1a
Previous block: 2336de3e25cca1fa9aa7a7c78af59ab1c1abc1bc897bec0bf6fabaef5d5d6d23
Next block: 05385285888e8ae0fb1092b87dc1126dfc2e7dc592b2d6eac8321bd73ba14bc3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697673
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: fc9fd56f4188ba90ce868f258010f249c8402ec8de24d77ec99d50eb8a85cbf3
Median time: 1718697672
Difficulty: 4.656542373906925e-10
Confirmations: 650
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c76
Bits: 207fffff