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: 526
Hash: 05e987022c779fb6edc784af7838fbac6dd0d0fa8a9d69906bd7f090267decc4
Previous block: 0e3288cef32b64cb41242ec0d76c210552b1656584571d3bf8c4e200473ed363
Next block: 32f1ebf49ab906637f8b9658b917ac67fe7b93f1072be53c6327e4b1c9ebd29b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864231
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 052527ab30adf99626d5e05367bfbe005e1796e0d75598b0e4aea9cc8252fda8
Median time: 1701864230
Difficulty: 4.656542373906925e-10
Confirmations: 1718
Chainwork: 000000000000000000000000000000000000000000000000000000000000041e
Bits: 207fffff