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: 867
Hash: 2d11f07200e7695777bde44ea52e7b95eb77cefea8c54bf8c2d308509521c8d6
Previous block: 2e4231eb10ba72e9a8bc088ccc7ca8b625468abca640fcdf7d490b6ce907fdbe
Next block: 3852ab2b71a0e01b0ffd7dca2806568ee1d7795aebaa35a424a491aadde7fd74
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857813
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c941abf978425e802e64f94fe7938c6de0069603597a7d6d5d973d1fac5aa420
Median time: 1707857812
Difficulty: 4.656542373906925e-10
Confirmations: 1377
Chainwork: 00000000000000000000000000000000000000000000000000000000000006c8
Bits: 207fffff