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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1704
Hash: 715aecab5697ca1d2ea6e81a38907fa1606927aa33c4e42b672d2d69238d1785
Previous block: 0761bd24dff42f63ef8691951e310c0a8f26e7b59297a7554108cce7f675a8be
Next block: 34ad2a2f40e5137ff4160f34fb5f0c0a24b0c8db293043e3df21576c3ef0db4f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159207
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 827abb50c961a5076b9d714cec3a82c3793a495ebb3866ce541116a59e3dc0d7
Median time: 1719159206
Difficulty: 4.656542373906925e-10
Confirmations: 540
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d52
Bits: 207fffff