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: 797
Hash: 4aa4749c784d47c713a1f1b205bcea4a94c910f2832ebd1036ddfc5c7a2ba245
Previous block: 29f44788e98df43579e2652796379c05c1bc2423d47ba004c571f50b5ac6c887
Next block: 57d78930a44eb52920c68a137dfcdfad96affac5f0820472103e60f49906d6f4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864276
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 33dfd23feae201c421f3f9260b4a0e5426e64e7bc338bb71ae94d735d26a12e7
Median time: 1701864275
Difficulty: 4.656542373906925e-10
Confirmations: 1447
Chainwork: 000000000000000000000000000000000000000000000000000000000000063c
Bits: 207fffff