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: 1656
Hash: 1ba470ca7ddd406444d13bfdf8e07aeba739eb0ad9b8a216beb1a160d5e6898b
Previous block: 3a1277f899409e8ce5d1da920d868856b113c119b22f2a7fdf2fc92f21814fa4
Next block: 0ec58f9bdbed1759f871e9bf9df633de8db08fbd492034253784e356ac1fa16e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159199
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d961673222fd967042ee36b80b14b5511b70a73bf2290493c2c16c96551c32ba
Median time: 1719159198
Difficulty: 4.656542373906925e-10
Confirmations: 588
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cf2
Bits: 207fffff