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: 525
Hash: 0e3288cef32b64cb41242ec0d76c210552b1656584571d3bf8c4e200473ed363
Previous block: 3701e86ffb427e54683958f0e4d2eea7f409301c0d1cd77751724163a1fd1f0c
Next block: 05e987022c779fb6edc784af7838fbac6dd0d0fa8a9d69906bd7f090267decc4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864231
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c8544314e595414ff272ca4426bf6c7977d2572d0e9cf4cdbd587dcf588da47d
Median time: 1701864230
Difficulty: 4.656542373906925e-10
Confirmations: 1719
Chainwork: 000000000000000000000000000000000000000000000000000000000000041c
Bits: 207fffff