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: 1597
Hash: 7668c65d8bff45286a269c089a046fafbbcc4539fe98b7e061e660036e4dd066
Previous block: 21381958bfa49fddc2b00e5f884e86c10e2c66a41019a1d741d52fc27e44b21c
Next block: 25ade07827808f60f78ac50218f93e308754317caff5dfbc83b8a733ea14cdc2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697674
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 8b02d8ba554785f82bf30a37cdf175c7c1bed21c9d8736a082740b47cca5b0a3
Median time: 1718697673
Difficulty: 4.656542373906925e-10
Confirmations: 647
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c7c
Bits: 207fffff