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: 1479
Hash: 09dffd7b76016fd4f0dc8b031df1418201502dc3e6e08a0cb5a3941f12eea558
Previous block: 1bc3759286546bc4cdc26a151e4311ca89c0c9b0c1c9fb682dd1162bd1d6151b
Next block: 44be4108cc480921ecf78861c0785b9c8a942db33a502a1ae21a92d41f037c3f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697654
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3392141e9c5972161ffbbe4c4774ff115e24351220c7ead07d558f7602965e77
Median time: 1718697653
Difficulty: 4.656542373906925e-10
Confirmations: 765
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b90
Bits: 207fffff