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: 2066
Hash: 62681e1f6cdc17c79725c43053b55261a6799b990a80e9fdf84987c6faff7306
Previous block: 3bf74216666836f9679a8bcc5a8666d510460b73f120dcee6c69bf11dba7ba88
Next block: 65cf36638cb8752e77256cbd6a59e16d7d85d9f031b56a75a78b1a32e6583f8c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964781
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 5fb13cb327b40a2fb7b50a5faea2fe2b9ceaf82038f1a44b3eec771d7e9cc5c3
Median time: 1728964780
Difficulty: 4.656542373906925e-10
Confirmations: 178
Chainwork: 0000000000000000000000000000000000000000000000000000000000001026
Bits: 207fffff