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: 865
Hash: 5515fceaa21339870eeaea6f9f7aa89c7e52d5f2c1aaaef236dfc95504735f8c
Previous block: 7683c5784d3cb7c7d3e590c0698188b66f244156f4031cd4fd604f8bc9d570e7
Next block: 2e4231eb10ba72e9a8bc088ccc7ca8b625468abca640fcdf7d490b6ce907fdbe
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857813
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 7a128e32689047b6ea86671d67ef2a46ddc4d0a2ebab2a89f86f9f5d4b9d3402
Median time: 1707857812
Difficulty: 4.656542373906925e-10
Confirmations: 1379
Chainwork: 00000000000000000000000000000000000000000000000000000000000006c4
Bits: 207fffff